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-rw-r--r--docs/reference/rl95_cadmium.html119
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diff --git a/docs/reference/calplot.lm.html b/docs/reference/calplot.lm.html
index b041a8d..7865a66 100644
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<h1>Plot calibration graphs from univariate linear models</h1>
@@ -125,102 +57,88 @@
as confidence, and, for unweighted regression, prediction bands.</p>
</div>
- <pre class="usage"><span class='fu'>calplot</span><span class='op'>(</span><span class='va'>object</span>, xlim <span class='op'>=</span> <span class='fu'><a href='https://rdrr.io/r/base/c.html'>c</a></span><span class='op'>(</span><span class='st'>"auto"</span>, <span class='st'>"auto"</span><span class='op'>)</span>, ylim <span class='op'>=</span> <span class='fu'><a href='https://rdrr.io/r/base/c.html'>c</a></span><span class='op'>(</span><span class='st'>"auto"</span>, <span class='st'>"auto"</span><span class='op'>)</span>,
- xlab <span class='op'>=</span> <span class='st'>"Concentration"</span>, ylab <span class='op'>=</span> <span class='st'>"Response"</span>, legend_x <span class='op'>=</span> <span class='st'>"auto"</span>,
- alpha<span class='op'>=</span><span class='fl'>0.05</span>, varfunc <span class='op'>=</span> <span class='cn'>NULL</span><span class='op'>)</span></pre>
-
- <h2 class="hasAnchor" id="arguments"><a class="anchor" href="#arguments"></a>Arguments</h2>
- <table class="ref-arguments">
- <colgroup><col class="name" /><col class="desc" /></colgroup>
- <tr>
- <th>object</th>
- <td><p>A univariate model object of class <code><a href='https://rdrr.io/r/stats/lm.html'>lm</a></code> or
- <code><a href='https://rdrr.io/pkg/MASS/man/rlm.html'>rlm</a></code>
- with model formula <code>y ~ x</code> or <code>y ~ x - 1</code>.</p></td>
- </tr>
- <tr>
- <th>xlim</th>
- <td><p>The limits of the plot on the x axis.</p></td>
- </tr>
- <tr>
- <th>ylim</th>
- <td><p>The limits of the plot on the y axis.</p></td>
- </tr>
- <tr>
- <th>xlab</th>
- <td><p>The label of the x axis.</p></td>
- </tr>
- <tr>
- <th>ylab</th>
- <td><p>The label of the y axis.</p></td>
- </tr>
- <tr>
- <th>legend_x</th>
- <td><p>An optional numeric value for adjusting the x coordinate of the legend.</p></td>
- </tr>
- <tr>
- <th>alpha</th>
- <td><p>The error tolerance level for the confidence and prediction bands. Note that this
- includes both tails of the Gaussian distribution, unlike the alpha and beta parameters
- used in <code><a href='lod.html'>lod</a></code> (see note below).</p></td>
- </tr>
- <tr>
- <th>varfunc</th>
- <td><p>The variance function for generating the weights in the model.
- Currently, this argument is ignored (see note below).</p></td>
- </tr>
- </table>
-
- <h2 class="hasAnchor" id="value"><a class="anchor" href="#value"></a>Value</h2>
+ <div id="ref-usage">
+ <div class="sourceCode"><pre class="sourceCode r"><code><span class="fu">calplot</span><span class="op">(</span><span class="va">object</span>, xlim <span class="op">=</span> <span class="fu"><a href="https://rdrr.io/r/base/c.html" class="external-link">c</a></span><span class="op">(</span><span class="st">"auto"</span>, <span class="st">"auto"</span><span class="op">)</span>, ylim <span class="op">=</span> <span class="fu"><a href="https://rdrr.io/r/base/c.html" class="external-link">c</a></span><span class="op">(</span><span class="st">"auto"</span>, <span class="st">"auto"</span><span class="op">)</span>,
+ xlab <span class="op">=</span> <span class="st">"Concentration"</span>, ylab <span class="op">=</span> <span class="st">"Response"</span>, legend_x <span class="op">=</span> <span class="st">"auto"</span>,
+ alpha<span class="op">=</span><span class="fl">0.05</span>, varfunc <span class="op">=</span> <span class="cn">NULL</span><span class="op">)</span></code></pre></div>
+ </div>
+ <div id="arguments">
+ <h2>Arguments</h2>
+ <dl><dt>object</dt>
+<dd><p>A univariate model object of class <code><a href="https://rdrr.io/r/stats/lm.html" class="external-link">lm</a></code> or
+ <code><a href="https://rdrr.io/pkg/MASS/man/rlm.html" class="external-link">rlm</a></code>
+ with model formula <code>y ~ x</code> or <code>y ~ x - 1</code>.</p></dd>
+<dt>xlim</dt>
+<dd><p>The limits of the plot on the x axis.</p></dd>
+<dt>ylim</dt>
+<dd><p>The limits of the plot on the y axis.</p></dd>
+<dt>xlab</dt>
+<dd><p>The label of the x axis.</p></dd>
+<dt>ylab</dt>
+<dd><p>The label of the y axis.</p></dd>
+<dt>legend_x</dt>
+<dd><p>An optional numeric value for adjusting the x coordinate of the legend.</p></dd>
+<dt>alpha</dt>
+<dd><p>The error tolerance level for the confidence and prediction bands. Note that this
+ includes both tails of the Gaussian distribution, unlike the alpha and beta parameters
+ used in <code><a href="lod.html">lod</a></code> (see note below).</p></dd>
+<dt>varfunc</dt>
+<dd><p>The variance function for generating the weights in the model.
+ Currently, this argument is ignored (see note below).</p></dd>
+</dl></div>
+ <div id="value">
+ <h2>Value</h2>
<p>A plot of the calibration data, of your fitted model as well as lines showing
the confidence limits. Prediction limits are only shown for models from
unweighted regression.</p>
- <h2 class="hasAnchor" id="note"><a class="anchor" href="#note"></a>Note</h2>
-
+ </div>
+ <div id="note">
+ <h2>Note</h2>
<p>Prediction bands for models from weighted linear regression require weights
for the data, for which responses should be predicted. Prediction intervals
using weights e.g. from a variance function are currently not supported by
- the internally used function <code><a href='https://rdrr.io/r/stats/predict.lm.html'>predict.lm</a></code>, therefore,
+ the internally used function <code><a href="https://rdrr.io/r/stats/predict.lm.html" class="external-link">predict.lm</a></code>, therefore,
<code>calplot</code> does not draw prediction bands for such models.</p>
<p>It is possible to compare the <code>calplot</code> prediction bands with the
- <code><a href='lod.html'>lod</a></code> values if the <code><a href='lod.html'>lod()</a></code> alpha and beta parameters are
+ <code><a href="lod.html">lod</a></code> values if the <code><a href="lod.html">lod()</a></code> alpha and beta parameters are
half the value of the <code>calplot()</code> alpha parameter.</p>
- <h2 class="hasAnchor" id="author"><a class="anchor" href="#author"></a>Author</h2>
-
+ </div>
+ <div id="author">
+ <h2>Author</h2>
<p>Johannes Ranke
- <a href='mailto:jranke@uni-bremen.de'>jranke@uni-bremen.de</a></p>
+ <a href="mailto:jranke@uni-bremen.de">jranke@uni-bremen.de</a></p>
+ </div>
- <h2 class="hasAnchor" id="examples"><a class="anchor" href="#examples"></a>Examples</h2>
- <pre class="examples"><div class='input'><span class='fu'><a href='https://rdrr.io/r/utils/data.html'>data</a></span><span class='op'>(</span><span class='va'>massart97ex3</span><span class='op'>)</span>
-<span class='va'>m</span> <span class='op'>&lt;-</span> <span class='fu'><a href='https://rdrr.io/r/stats/lm.html'>lm</a></span><span class='op'>(</span><span class='va'>y</span> <span class='op'>~</span> <span class='va'>x</span>, data <span class='op'>=</span> <span class='va'>massart97ex3</span><span class='op'>)</span>
-<span class='fu'>calplot</span><span class='op'>(</span><span class='va'>m</span><span class='op'>)</span>
-</div><div class='img'><img src='calplot.lm-1.png' alt='' width='700' height='433' /></div></pre>
+ <div id="ref-examples">
+ <h2>Examples</h2>
+ <div class="sourceCode"><pre class="sourceCode r"><code><span class="r-in"><span class="fu"><a href="https://rdrr.io/r/utils/data.html" class="external-link">data</a></span><span class="op">(</span><span class="va">massart97ex3</span><span class="op">)</span></span>
+<span class="r-in"><span class="va">m</span> <span class="op">&lt;-</span> <span class="fu"><a href="https://rdrr.io/r/stats/lm.html" class="external-link">lm</a></span><span class="op">(</span><span class="va">y</span> <span class="op">~</span> <span class="va">x</span>, data <span class="op">=</span> <span class="va">massart97ex3</span><span class="op">)</span></span>
+<span class="r-in"><span class="fu">calplot</span><span class="op">(</span><span class="va">m</span><span class="op">)</span></span>
+<span class="r-plt img"><img src="calplot.lm-1.png" alt="" width="700" height="433"></span>
+</code></pre></div>
+ </div>
</div>
<div class="col-md-3 hidden-xs hidden-sm" id="pkgdown-sidebar">
- <nav id="toc" data-toggle="toc" class="sticky-top">
- <h2 data-toc-skip>Contents</h2>
- </nav>
- </div>
+ <nav id="toc" data-toggle="toc" class="sticky-top"><h2 data-toc-skip>Contents</h2>
+ </nav></div>
</div>
- <footer>
- <div class="copyright">
- <p>Developed by Johannes Ranke.</p>
+ <footer><div class="copyright">
+ <p></p><p>Developed by Johannes Ranke.</p>
</div>
<div class="pkgdown">
- <p>Site built with <a href="https://pkgdown.r-lib.org/">pkgdown</a> 1.6.1.</p>
+ <p></p><p>Site built with <a href="https://pkgdown.r-lib.org/" class="external-link">pkgdown</a> 2.0.2.</p>
</div>
- </footer>
- </div>
+ </footer></div>
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-</html>
+
+ </body></html>
diff --git a/docs/reference/din32645-1.png b/docs/reference/din32645-1.png
index 27914e8..170a9ae 100644
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+++ b/docs/reference/din32645-1.png
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diff --git a/docs/reference/din32645.html b/docs/reference/din32645.html
index b46103c..1c02f36 100644
--- a/docs/reference/din32645.html
+++ b/docs/reference/din32645.html
@@ -1,67 +1,12 @@
-<!-- Generated by pkgdown: do not edit by hand -->
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-<meta http-equiv="X-UA-Compatible" content="IE=edge">
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<h1>Calibration data from DIN 32645</h1>
@@ -123,14 +55,16 @@
<p>Sample dataset to test the package.</p>
</div>
- <pre class="usage"><span class='fu'><a href='https://rdrr.io/r/utils/data.html'>data</a></span><span class='op'>(</span><span class='va'>din32645</span><span class='op'>)</span></pre>
-
-
- <h2 class="hasAnchor" id="format"><a class="anchor" href="#format"></a>Format</h2>
+ <div id="ref-usage">
+ <div class="sourceCode"><pre class="sourceCode r"><code><span class="fu"><a href="https://rdrr.io/r/utils/data.html" class="external-link">data</a></span><span class="op">(</span><span class="va">din32645</span><span class="op">)</span></code></pre></div>
+ </div>
+ <div id="format">
+ <h2>Format</h2>
<p>A dataframe containing 10 rows of x and y values.</p>
- <h2 class="hasAnchor" id="references"><a class="anchor" href="#references"></a>References</h2>
-
+ </div>
+ <div id="references">
+ <h2>References</h2>
<p>DIN 32645 (equivalent to ISO 11843), Beuth Verlag, Berlin, 1994</p>
<p>Dintest. Plugin for MS Excel for evaluations of calibration data. Written
by Georg Schmitt, University of Heidelberg. Formerly available from
@@ -138,69 +72,75 @@
<p>Currie, L. A. (1997) Nomenclature in evaluation of analytical methods including
detection and quantification capabilities (IUPAC Recommendations 1995).
Analytica Chimica Acta 391, 105 - 126.</p>
+ </div>
- <h2 class="hasAnchor" id="examples"><a class="anchor" href="#examples"></a>Examples</h2>
- <pre class="examples"><div class='input'><span class='va'>m</span> <span class='op'>&lt;-</span> <span class='fu'><a href='https://rdrr.io/r/stats/lm.html'>lm</a></span><span class='op'>(</span><span class='va'>y</span> <span class='op'>~</span> <span class='va'>x</span>, data <span class='op'>=</span> <span class='va'>din32645</span><span class='op'>)</span>
-<span class='fu'><a href='calplot.html'>calplot</a></span><span class='op'>(</span><span class='va'>m</span><span class='op'>)</span>
-</div><div class='img'><img src='din32645-1.png' alt='' width='700' height='433' /></div><div class='input'>
-<span class='co'>## Prediction of x with confidence interval</span>
-<span class='va'>prediction</span> <span class='op'>&lt;-</span> <span class='fu'><a href='inverse.predict.html'>inverse.predict</a></span><span class='op'>(</span><span class='va'>m</span>, <span class='fl'>3500</span>, alpha <span class='op'>=</span> <span class='fl'>0.01</span><span class='op'>)</span>
-
-<span class='co'># This should give 0.07434 according to test data from Dintest, which </span>
-<span class='co'># was collected from Procontrol 3.1 (isomehr GmbH) in this case</span>
-<span class='fu'><a href='https://rdrr.io/r/base/Round.html'>round</a></span><span class='op'>(</span><span class='va'>prediction</span><span class='op'>$</span><span class='va'>Confidence</span>, <span class='fl'>5</span><span class='op'>)</span>
-</div><div class='output co'>#&gt; [1] 0.07434</div><div class='input'>
-<span class='co'>## Critical value:</span>
-<span class='va'>crit</span> <span class='op'>&lt;-</span> <span class='fu'><a href='lod.html'>lod</a></span><span class='op'>(</span><span class='va'>m</span>, alpha <span class='op'>=</span> <span class='fl'>0.01</span>, beta <span class='op'>=</span> <span class='fl'>0.5</span><span class='op'>)</span>
-
-<span class='co'># According to DIN 32645, we should get 0.07 for the critical value</span>
-<span class='co'># (decision limit, "Nachweisgrenze")</span>
-<span class='fu'><a href='https://rdrr.io/r/base/Round.html'>round</a></span><span class='op'>(</span><span class='va'>crit</span><span class='op'>$</span><span class='va'>x</span>, <span class='fl'>2</span><span class='op'>)</span>
-</div><div class='output co'>#&gt; [1] 0.07</div><div class='input'><span class='co'># and according to Dintest test data, we should get 0.0698 from</span>
-<span class='fu'><a href='https://rdrr.io/r/base/Round.html'>round</a></span><span class='op'>(</span><span class='va'>crit</span><span class='op'>$</span><span class='va'>x</span>, <span class='fl'>4</span><span class='op'>)</span>
-</div><div class='output co'>#&gt; [1] 0.0698</div><div class='input'>
-<span class='co'>## Limit of detection (smallest detectable value given alpha and beta)</span>
-<span class='co'># In German, the smallest detectable value is the "Erfassungsgrenze", and we</span>
-<span class='co'># should get 0.14 according to DIN, which we achieve by using the method </span>
-<span class='co'># described in it:</span>
-<span class='va'>lod.din</span> <span class='op'>&lt;-</span> <span class='fu'><a href='lod.html'>lod</a></span><span class='op'>(</span><span class='va'>m</span>, alpha <span class='op'>=</span> <span class='fl'>0.01</span>, beta <span class='op'>=</span> <span class='fl'>0.01</span>, method <span class='op'>=</span> <span class='st'>"din"</span><span class='op'>)</span>
-<span class='fu'><a href='https://rdrr.io/r/base/Round.html'>round</a></span><span class='op'>(</span><span class='va'>lod.din</span><span class='op'>$</span><span class='va'>x</span>, <span class='fl'>2</span><span class='op'>)</span>
-</div><div class='output co'>#&gt; [1] 0.14</div><div class='input'>
-<span class='co'>## Limit of quantification</span>
-<span class='co'># This accords to the test data coming with the test data from Dintest again, </span>
-<span class='co'># except for the last digits of the value cited for Procontrol 3.1 (0.2121)</span>
-<span class='va'>loq</span> <span class='op'>&lt;-</span> <span class='fu'><a href='loq.html'>loq</a></span><span class='op'>(</span><span class='va'>m</span>, alpha <span class='op'>=</span> <span class='fl'>0.01</span><span class='op'>)</span>
-<span class='fu'><a href='https://rdrr.io/r/base/Round.html'>round</a></span><span class='op'>(</span><span class='va'>loq</span><span class='op'>$</span><span class='va'>x</span>, <span class='fl'>4</span><span class='op'>)</span>
-</div><div class='output co'>#&gt; [1] 0.212</div><div class='input'>
-<span class='co'># A similar value is obtained using the approximation </span>
-<span class='co'># LQ = 3.04 * LC (Currie 1999, p. 120)</span>
-<span class='fl'>3.04</span> <span class='op'>*</span> <span class='fu'><a href='lod.html'>lod</a></span><span class='op'>(</span><span class='va'>m</span>, alpha <span class='op'>=</span> <span class='fl'>0.01</span>, beta <span class='op'>=</span> <span class='fl'>0.5</span><span class='op'>)</span><span class='op'>$</span><span class='va'>x</span>
-</div><div class='output co'>#&gt; [1] 0.2122306</div></pre>
+ <div id="ref-examples">
+ <h2>Examples</h2>
+ <div class="sourceCode"><pre class="sourceCode r"><code><span class="r-in"><span class="va">m</span> <span class="op">&lt;-</span> <span class="fu"><a href="https://rdrr.io/r/stats/lm.html" class="external-link">lm</a></span><span class="op">(</span><span class="va">y</span> <span class="op">~</span> <span class="va">x</span>, data <span class="op">=</span> <span class="va">din32645</span><span class="op">)</span></span>
+<span class="r-in"><span class="fu"><a href="calplot.lm.html">calplot</a></span><span class="op">(</span><span class="va">m</span><span class="op">)</span></span>
+<span class="r-plt img"><img src="din32645-1.png" alt="" width="700" height="433"></span>
+<span class="r-in"></span>
+<span class="r-in"><span class="co">## Prediction of x with confidence interval</span></span>
+<span class="r-in"><span class="va">prediction</span> <span class="op">&lt;-</span> <span class="fu"><a href="inverse.predict.html">inverse.predict</a></span><span class="op">(</span><span class="va">m</span>, <span class="fl">3500</span>, alpha <span class="op">=</span> <span class="fl">0.01</span><span class="op">)</span></span>
+<span class="r-in"></span>
+<span class="r-in"><span class="co"># This should give 0.07434 according to test data from Dintest, which </span></span>
+<span class="r-in"><span class="co"># was collected from Procontrol 3.1 (isomehr GmbH) in this case</span></span>
+<span class="r-in"><span class="fu"><a href="https://rdrr.io/r/base/Round.html" class="external-link">round</a></span><span class="op">(</span><span class="va">prediction</span><span class="op">$</span><span class="va">Confidence</span>, <span class="fl">5</span><span class="op">)</span></span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> [1] 0.07434</span>
+<span class="r-in"></span>
+<span class="r-in"><span class="co">## Critical value:</span></span>
+<span class="r-in"><span class="va">crit</span> <span class="op">&lt;-</span> <span class="fu"><a href="lod.html">lod</a></span><span class="op">(</span><span class="va">m</span>, alpha <span class="op">=</span> <span class="fl">0.01</span>, beta <span class="op">=</span> <span class="fl">0.5</span><span class="op">)</span></span>
+<span class="r-in"></span>
+<span class="r-in"><span class="co"># According to DIN 32645, we should get 0.07 for the critical value</span></span>
+<span class="r-in"><span class="co"># (decision limit, "Nachweisgrenze")</span></span>
+<span class="r-in"><span class="fu"><a href="https://rdrr.io/r/base/Round.html" class="external-link">round</a></span><span class="op">(</span><span class="va">crit</span><span class="op">$</span><span class="va">x</span>, <span class="fl">2</span><span class="op">)</span></span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> [1] 0.07</span>
+<span class="r-in"><span class="co"># and according to Dintest test data, we should get 0.0698 from</span></span>
+<span class="r-in"><span class="fu"><a href="https://rdrr.io/r/base/Round.html" class="external-link">round</a></span><span class="op">(</span><span class="va">crit</span><span class="op">$</span><span class="va">x</span>, <span class="fl">4</span><span class="op">)</span></span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> [1] 0.0698</span>
+<span class="r-in"></span>
+<span class="r-in"><span class="co">## Limit of detection (smallest detectable value given alpha and beta)</span></span>
+<span class="r-in"><span class="co"># In German, the smallest detectable value is the "Erfassungsgrenze", and we</span></span>
+<span class="r-in"><span class="co"># should get 0.14 according to DIN, which we achieve by using the method </span></span>
+<span class="r-in"><span class="co"># described in it:</span></span>
+<span class="r-in"><span class="va">lod.din</span> <span class="op">&lt;-</span> <span class="fu"><a href="lod.html">lod</a></span><span class="op">(</span><span class="va">m</span>, alpha <span class="op">=</span> <span class="fl">0.01</span>, beta <span class="op">=</span> <span class="fl">0.01</span>, method <span class="op">=</span> <span class="st">"din"</span><span class="op">)</span></span>
+<span class="r-in"><span class="fu"><a href="https://rdrr.io/r/base/Round.html" class="external-link">round</a></span><span class="op">(</span><span class="va">lod.din</span><span class="op">$</span><span class="va">x</span>, <span class="fl">2</span><span class="op">)</span></span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> [1] 0.14</span>
+<span class="r-in"></span>
+<span class="r-in"><span class="co">## Limit of quantification</span></span>
+<span class="r-in"><span class="co"># This accords to the test data coming with the test data from Dintest again, </span></span>
+<span class="r-in"><span class="co"># except for the last digits of the value cited for Procontrol 3.1 (0.2121)</span></span>
+<span class="r-in"><span class="va">loq</span> <span class="op">&lt;-</span> <span class="fu"><a href="loq.html">loq</a></span><span class="op">(</span><span class="va">m</span>, alpha <span class="op">=</span> <span class="fl">0.01</span><span class="op">)</span></span>
+<span class="r-in"><span class="fu"><a href="https://rdrr.io/r/base/Round.html" class="external-link">round</a></span><span class="op">(</span><span class="va">loq</span><span class="op">$</span><span class="va">x</span>, <span class="fl">4</span><span class="op">)</span></span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> [1] 0.212</span>
+<span class="r-in"></span>
+<span class="r-in"><span class="co"># A similar value is obtained using the approximation </span></span>
+<span class="r-in"><span class="co"># LQ = 3.04 * LC (Currie 1999, p. 120)</span></span>
+<span class="r-in"><span class="fl">3.04</span> <span class="op">*</span> <span class="fu"><a href="lod.html">lod</a></span><span class="op">(</span><span class="va">m</span>, alpha <span class="op">=</span> <span class="fl">0.01</span>, beta <span class="op">=</span> <span class="fl">0.5</span><span class="op">)</span><span class="op">$</span><span class="va">x</span></span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> [1] 0.2122306</span>
+</code></pre></div>
+ </div>
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diff --git a/docs/reference/figures/README-calplot-1.png b/docs/reference/figures/README-calplot-1.png
new file mode 100644
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diff --git a/docs/reference/index.html b/docs/reference/index.html
index 8549a1d..3685007 100644
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+<!-- Generated by pkgdown: do not edit by hand --><html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="utf-8"><meta http-equiv="X-UA-Compatible" content="IE=edge"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>Function reference • chemCal</title><!-- jquery --><script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.4.1/jquery.min.js" integrity="sha256-CSXorXvZcTkaix6Yvo6HppcZGetbYMGWSFlBw8HfCJo=" crossorigin="anonymous"></script><!-- Bootstrap --><link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.4.1/css/bootstrap.min.css" integrity="sha256-bZLfwXAP04zRMK2BjiO8iu9pf4FbLqX6zitd+tIvLhE=" crossorigin="anonymous"><script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.4.1/js/bootstrap.min.js" integrity="sha256-nuL8/2cJ5NDSSwnKD8VqreErSWHtnEP9E7AySL+1ev4=" crossorigin="anonymous"></script><!-- bootstrap-toc --><link rel="stylesheet" href="../bootstrap-toc.css"><script src="../bootstrap-toc.js"></script><!-- Font Awesome icons --><link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.12.1/css/all.min.css" integrity="sha256-mmgLkCYLUQbXn0B1SRqzHar6dCnv9oZFPEC1g1cwlkk=" crossorigin="anonymous"><link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.12.1/css/v4-shims.min.css" integrity="sha256-wZjR52fzng1pJHwx4aV2AO3yyTOXrcDW7jBpJtTwVxw=" crossorigin="anonymous"><!-- clipboard.js --><script src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.6/clipboard.min.js" integrity="sha256-inc5kl9MA1hkeYUt+EC3BhlIgyp/2jDIyBLS6k3UxPI=" crossorigin="anonymous"></script><!-- headroom.js --><script src="https://cdnjs.cloudflare.com/ajax/libs/headroom/0.11.0/headroom.min.js" integrity="sha256-AsUX4SJE1+yuDu5+mAVzJbuYNPHj/WroHuZ8Ir/CkE0=" crossorigin="anonymous"></script><script src="https://cdnjs.cloudflare.com/ajax/libs/headroom/0.11.0/jQuery.headroom.min.js" integrity="sha256-ZX/yNShbjqsohH1k95liqY9Gd8uOiE1S4vZc+9KQ1K4=" crossorigin="anonymous"></script><!-- pkgdown --><link href="../pkgdown.css" rel="stylesheet"><script src="../pkgdown.js"></script><meta property="og:title" content="Function reference"><!-- mathjax --><script src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/MathJax.js" integrity="sha256-nvJJv9wWKEm88qvoQl9ekL2J+k/RWIsaSScxxlsrv8k=" crossorigin="anonymous"></script><script src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/config/TeX-AMS-MML_HTMLorMML.js" integrity="sha256-84DKXVJXs0/F8OTMzX4UR909+jtl4G7SPypPavF+GfA=" crossorigin="anonymous"></script><!--[if lt IE 9]>
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<script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script>
-<![endif]-->
-
-
+<![endif]--></head><body data-spy="scroll" data-target="#toc">
+
- </head>
-
- <body data-spy="scroll" data-target="#toc">
<div class="container template-reference-index">
- <header>
- <div class="navbar navbar-default navbar-fixed-top" role="navigation">
+ <header><div class="navbar navbar-default navbar-fixed-top" role="navigation">
<div class="container">
<div class="navbar-header">
<button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar" aria-expanded="false">
@@ -71,19 +17,12 @@
</button>
<span class="navbar-brand">
<a class="navbar-link" href="../index.html">chemCal</a>
- <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="Released version">0.2.2</span>
+ <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.2.3</span>
</span>
</div>
<div id="navbar" class="navbar-collapse collapse">
- <ul class="nav navbar-nav">
- <li>
- <a href="../index.html">
- <span class="fas fa-home fa-lg"></span>
-
- </a>
-</li>
-<li>
+ <ul class="nav navbar-nav"><li>
<a href="../articles/chemCal.html">Get started</a>
</li>
<li>
@@ -92,139 +31,90 @@
<li>
<a href="../news/index.html">Changelog</a>
</li>
- </ul>
- <ul class="nav navbar-nav navbar-right">
- <li>
- <a href="https://github.com/jranke/chemCal/">
+ </ul><ul class="nav navbar-nav navbar-right"><li>
+ <a href="https://github.com/jranke/chemCal/" class="external-link">
<span class="fab fa-github fa-lg"></span>
</a>
</li>
- </ul>
-
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+ </ul></div><!--/.nav-collapse -->
</div><!--/.container -->
</div><!--/.navbar -->
- </header>
-
-<div class="row">
+ </header><div class="row">
<div class="contents col-md-9">
<div class="page-header">
<h1>Reference</h1>
</div>
- <table class="ref-index">
-
- <colgroup>
-
- <col class="alias" />
- <col class="title" />
- </colgroup>
-
- <tbody>
- <tr>
- <th colspan="2">
- <h2 id="section-all-functions" class="hasAnchor"><a href="#section-all-functions" class="anchor"></a>All functions</h2>
+ <table class="ref-index"><colgroup><col class="alias"><col class="title"></colgroup><tbody><tr><th colspan="2">
+ <h2 id="all-functions">All functions <a href="#all-functions" class="anchor" aria-hidden="true"></a></h2>
<p class="section-desc"></p>
</th>
- </tr>
-
-
- </tbody><tbody>
-
-
- <tr>
-
- <td>
+ </tr></tbody><tbody><tr><td>
<p><code><a href="calplot.lm.html">calplot()</a></code> </p>
</td>
<td><p>Plot calibration graphs from univariate linear models</p></td>
- </tr><tr>
-
- <td>
+ </tr><tr><td>
<p><code><a href="din32645.html">din32645</a></code> </p>
</td>
<td><p>Calibration data from DIN 32645</p></td>
- </tr><tr>
-
- <td>
+ </tr><tr><td>
<p><code><a href="inverse.predict.html">inverse.predict()</a></code> </p>
</td>
<td><p>Predict x from y for a linear calibration</p></td>
- </tr><tr>
-
- <td>
+ </tr><tr><td>
<p><code><a href="lod.html">lod()</a></code> </p>
</td>
<td><p>Estimate a limit of detection (LOD)</p></td>
- </tr><tr>
-
- <td>
+ </tr><tr><td>
<p><code><a href="loq.html">loq()</a></code> </p>
</td>
<td><p>Estimate a limit of quantification (LOQ)</p></td>
- </tr><tr>
-
- <td>
+ </tr><tr><td>
<p><code><a href="massart97ex1.html">massart97ex1</a></code> </p>
</td>
<td><p>Calibration data from Massart et al. (1997), example 1</p></td>
- </tr><tr>
-
- <td>
+ </tr><tr><td>
<p><code><a href="massart97ex3.html">massart97ex3</a></code> </p>
</td>
<td><p>Calibration data from Massart et al. (1997), example 3</p></td>
- </tr><tr>
-
- <td>
+ </tr><tr><td>
<p><code><a href="rl95_cadmium.html">rl95_cadmium</a></code> </p>
</td>
<td><p>Cadmium concentrations measured by AAS as reported by Rocke and Lorenzato (1995)</p></td>
- </tr><tr>
-
- <td>
+ </tr><tr><td>
<p><code><a href="rl95_toluene.html">rl95_toluene</a></code> </p>
</td>
<td><p>Toluene amounts measured by GC/MS as reported by Rocke and Lorenzato (1995)</p></td>
- </tr><tr>
-
- <td>
+ </tr><tr><td>
<p><code><a href="utstats14.html">utstats14</a></code> </p>
</td>
<td><p>Example data for calibration with replicates from University of Toronto</p></td>
- </tr>
- </tbody>
- </table>
- </div>
+ </tr></tbody></table></div>
<div class="col-md-3 hidden-xs hidden-sm" id="pkgdown-sidebar">
- <nav id="toc" data-toggle="toc" class="sticky-top">
- <h2 data-toc-skip>Contents</h2>
- </nav>
- </div>
+ <nav id="toc" data-toggle="toc" class="sticky-top"><h2 data-toc-skip>Contents</h2>
+ </nav></div>
</div>
- <footer>
- <div class="copyright">
- <p>Developed by Johannes Ranke.</p>
+ <footer><div class="copyright">
+ <p></p><p>Developed by Johannes Ranke.</p>
</div>
<div class="pkgdown">
- <p>Site built with <a href="https://pkgdown.r-lib.org/">pkgdown</a> 1.6.1.</p>
+ <p></p><p>Site built with <a href="https://pkgdown.r-lib.org/" class="external-link">pkgdown</a> 2.0.2.</p>
</div>
- </footer>
- </div>
+ </footer></div>
- </body>
-</html>
+
+ </body></html>
diff --git a/docs/reference/inverse.predict.html b/docs/reference/inverse.predict.html
index aece430..cb9fe98 100644
--- a/docs/reference/inverse.predict.html
+++ b/docs/reference/inverse.predict.html
@@ -1,46 +1,5 @@
-<!-- Generated by pkgdown: do not edit by hand -->
<!DOCTYPE html>
-<html lang="en">
- <head>
- <meta charset="utf-8">
-<meta http-equiv="X-UA-Compatible" content="IE=edge">
-<meta name="viewport" content="width=device-width, initial-scale=1.0">
-
-<title>Predict x from y for a linear calibration — inverse.predict • chemCal</title>
-
-
-<!-- jquery -->
-<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.4.1/jquery.min.js" integrity="sha256-CSXorXvZcTkaix6Yvo6HppcZGetbYMGWSFlBw8HfCJo=" crossorigin="anonymous"></script>
-<!-- Bootstrap -->
-
-<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.4.1/css/bootstrap.min.css" integrity="sha256-bZLfwXAP04zRMK2BjiO8iu9pf4FbLqX6zitd+tIvLhE=" crossorigin="anonymous" />
-
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-<script src="../bootstrap-toc.js"></script>
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-<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.12.1/css/v4-shims.min.css" integrity="sha256-wZjR52fzng1pJHwx4aV2AO3yyTOXrcDW7jBpJtTwVxw=" crossorigin="anonymous" />
-
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-
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-<script src="https://cdnjs.cloudflare.com/ajax/libs/headroom/0.11.0/jQuery.headroom.min.js" integrity="sha256-ZX/yNShbjqsohH1k95liqY9Gd8uOiE1S4vZc+9KQ1K4=" crossorigin="anonymous"></script>
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-<link href="../pkgdown.css" rel="stylesheet">
-<script src="../pkgdown.js"></script>
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-
-
-
-<meta property="og:title" content="Predict x from y for a linear calibration — inverse.predict" />
-<meta property="og:description" content="This function predicts x values using a univariate linear model that has been
+<!-- Generated by pkgdown: do not edit by hand --><html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="utf-8"><meta http-equiv="X-UA-Compatible" content="IE=edge"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>Predict x from y for a linear calibration — inverse.predict • chemCal</title><!-- jquery --><script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.4.1/jquery.min.js" integrity="sha256-CSXorXvZcTkaix6Yvo6HppcZGetbYMGWSFlBw8HfCJo=" crossorigin="anonymous"></script><!-- Bootstrap --><link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.4.1/css/bootstrap.min.css" integrity="sha256-bZLfwXAP04zRMK2BjiO8iu9pf4FbLqX6zitd+tIvLhE=" crossorigin="anonymous"><script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.4.1/js/bootstrap.min.js" integrity="sha256-nuL8/2cJ5NDSSwnKD8VqreErSWHtnEP9E7AySL+1ev4=" crossorigin="anonymous"></script><!-- bootstrap-toc --><link rel="stylesheet" href="../bootstrap-toc.css"><script src="../bootstrap-toc.js"></script><!-- Font Awesome icons --><link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.12.1/css/all.min.css" integrity="sha256-mmgLkCYLUQbXn0B1SRqzHar6dCnv9oZFPEC1g1cwlkk=" crossorigin="anonymous"><link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.12.1/css/v4-shims.min.css" integrity="sha256-wZjR52fzng1pJHwx4aV2AO3yyTOXrcDW7jBpJtTwVxw=" crossorigin="anonymous"><!-- clipboard.js --><script src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.6/clipboard.min.js" integrity="sha256-inc5kl9MA1hkeYUt+EC3BhlIgyp/2jDIyBLS6k3UxPI=" crossorigin="anonymous"></script><!-- headroom.js --><script src="https://cdnjs.cloudflare.com/ajax/libs/headroom/0.11.0/headroom.min.js" integrity="sha256-AsUX4SJE1+yuDu5+mAVzJbuYNPHj/WroHuZ8Ir/CkE0=" crossorigin="anonymous"></script><script src="https://cdnjs.cloudflare.com/ajax/libs/headroom/0.11.0/jQuery.headroom.min.js" integrity="sha256-ZX/yNShbjqsohH1k95liqY9Gd8uOiE1S4vZc+9KQ1K4=" crossorigin="anonymous"></script><!-- pkgdown --><link href="../pkgdown.css" rel="stylesheet"><script src="../pkgdown.js"></script><meta property="og:title" content="Predict x from y for a linear calibration — inverse.predict"><meta property="og:description" content="This function predicts x values using a univariate linear model that has been
generated for the purpose of calibrating a measurement method. Prediction
intervals are given at the specified confidence level.
The calculation method was taken from Massart et al. (1997). In particular,
@@ -49,28 +8,14 @@
weights that have been used to create the linear model, and at the same
time providing the possibility to specify a precision in sample measurements
differing from the precision in standard samples used for the calibration.
- This is elaborated in the package vignette." />
-
-
-
-
-<!-- mathjax -->
-<script src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/MathJax.js" integrity="sha256-nvJJv9wWKEm88qvoQl9ekL2J+k/RWIsaSScxxlsrv8k=" crossorigin="anonymous"></script>
-<script src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/config/TeX-AMS-MML_HTMLorMML.js" integrity="sha256-84DKXVJXs0/F8OTMzX4UR909+jtl4G7SPypPavF+GfA=" crossorigin="anonymous"></script>
-
-<!--[if lt IE 9]>
+ This is elaborated in the package vignette."><!-- mathjax --><script src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/MathJax.js" integrity="sha256-nvJJv9wWKEm88qvoQl9ekL2J+k/RWIsaSScxxlsrv8k=" crossorigin="anonymous"></script><script src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/config/TeX-AMS-MML_HTMLorMML.js" integrity="sha256-84DKXVJXs0/F8OTMzX4UR909+jtl4G7SPypPavF+GfA=" crossorigin="anonymous"></script><!--[if lt IE 9]>
<script src="https://oss.maxcdn.com/html5shiv/3.7.3/html5shiv.min.js"></script>
<script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script>
-<![endif]-->
-
-
-
- </head>
+<![endif]--></head><body data-spy="scroll" data-target="#toc">
+
- <body data-spy="scroll" data-target="#toc">
<div class="container template-reference-topic">
- <header>
- <div class="navbar navbar-default navbar-fixed-top" role="navigation">
+ <header><div class="navbar navbar-default navbar-fixed-top" role="navigation">
<div class="container">
<div class="navbar-header">
<button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar" aria-expanded="false">
@@ -81,19 +26,12 @@
</button>
<span class="navbar-brand">
<a class="navbar-link" href="../index.html">chemCal</a>
- <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="Released version">0.2.2</span>
+ <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.2.3</span>
</span>
</div>
<div id="navbar" class="navbar-collapse collapse">
- <ul class="nav navbar-nav">
- <li>
- <a href="../index.html">
- <span class="fas fa-home fa-lg"></span>
-
- </a>
-</li>
-<li>
+ <ul class="nav navbar-nav"><li>
<a href="../articles/chemCal.html">Get started</a>
</li>
<li>
@@ -102,25 +40,19 @@
<li>
<a href="../news/index.html">Changelog</a>
</li>
- </ul>
- <ul class="nav navbar-nav navbar-right">
- <li>
- <a href="https://github.com/jranke/chemCal/">
+ </ul><ul class="nav navbar-nav navbar-right"><li>
+ <a href="https://github.com/jranke/chemCal/" class="external-link">
<span class="fab fa-github fa-lg"></span>
</a>
</li>
- </ul>
-
- </div><!--/.nav-collapse -->
+ </ul></div><!--/.nav-collapse -->
</div><!--/.container -->
</div><!--/.navbar -->
- </header>
-
-<div class="row">
+ </header><div class="row">
<div class="col-md-9 contents">
<div class="page-header">
<h1>Predict x from y for a linear calibration</h1>
@@ -141,166 +73,160 @@
This is elaborated in the package vignette.</p>
</div>
- <pre class="usage"><span class='fu'>inverse.predict</span><span class='op'>(</span><span class='va'>object</span>, <span class='va'>newdata</span>, <span class='va'>...</span>,
- <span class='va'>ws</span>, alpha<span class='op'>=</span><span class='fl'>0.05</span>, var.s <span class='op'>=</span> <span class='st'>"auto"</span><span class='op'>)</span></pre>
+ <div id="ref-usage">
+ <div class="sourceCode"><pre class="sourceCode r"><code><span class="fu">inverse.predict</span><span class="op">(</span><span class="va">object</span>, <span class="va">newdata</span>, <span class="va">...</span>,
+ <span class="va">ws</span>, alpha<span class="op">=</span><span class="fl">0.05</span>, var.s <span class="op">=</span> <span class="st">"auto"</span><span class="op">)</span></code></pre></div>
+ </div>
- <h2 class="hasAnchor" id="arguments"><a class="anchor" href="#arguments"></a>Arguments</h2>
- <table class="ref-arguments">
- <colgroup><col class="name" /><col class="desc" /></colgroup>
- <tr>
- <th>object</th>
- <td><p>A univariate model object of class <code><a href='https://rdrr.io/r/stats/lm.html'>lm</a></code> or
- <code><a href='https://rdrr.io/pkg/MASS/man/rlm.html'>rlm</a></code>
- with model formula <code>y ~ x</code> or <code>y ~ x - 1</code>.</p></td>
- </tr>
- <tr>
- <th>newdata</th>
- <td><p>A vector of observed y values for one sample.</p></td>
- </tr>
- <tr>
- <th>...</th>
- <td><p>Placeholder for further arguments that might be needed by
- future implementations.</p></td>
- </tr>
- <tr>
- <th>ws</th>
- <td><p>The weight attributed to the sample. This argument is obligatory
- if <code>object</code> has weights.</p></td>
- </tr>
- <tr>
- <th>alpha</th>
- <td><p>The error tolerance level for the confidence interval to be reported.</p></td>
- </tr>
- <tr>
- <th>var.s</th>
- <td><p>The estimated variance of the sample measurements. The default is to take
+ <div id="arguments">
+ <h2>Arguments</h2>
+ <dl><dt>object</dt>
+<dd><p>A univariate model object of class <code><a href="https://rdrr.io/r/stats/lm.html" class="external-link">lm</a></code> or
+ <code><a href="https://rdrr.io/pkg/MASS/man/rlm.html" class="external-link">rlm</a></code>
+ with model formula <code>y ~ x</code> or <code>y ~ x - 1</code>.</p></dd>
+<dt>newdata</dt>
+<dd><p>A vector of observed y values for one sample.</p></dd>
+<dt>...</dt>
+<dd><p>Placeholder for further arguments that might be needed by
+ future implementations.</p></dd>
+<dt>ws</dt>
+<dd><p>The weight attributed to the sample. This argument is obligatory
+ if <code>object</code> has weights.</p></dd>
+<dt>alpha</dt>
+<dd><p>The error tolerance level for the confidence interval to be reported.</p></dd>
+<dt>var.s</dt>
+<dd><p>The estimated variance of the sample measurements. The default is to take
the residual standard error from the calibration and to adjust it
using <code>ws</code>, if applicable. This means that <code>var.s</code>
- overrides <code>ws</code>.</p></td>
- </tr>
- </table>
-
- <h2 class="hasAnchor" id="value"><a class="anchor" href="#value"></a>Value</h2>
-
+ overrides <code>ws</code>.</p></dd>
+</dl></div>
+ <div id="value">
+ <h2>Value</h2>
<p>A list containing the predicted x value, its standard error and a
confidence interval.</p>
- <h2 class="hasAnchor" id="note"><a class="anchor" href="#note"></a>Note</h2>
-
+ </div>
+ <div id="note">
+ <h2>Note</h2>
<p>The function was validated with examples 7 and 8 from Massart et al. (1997).
Note that the behaviour of inverse.predict changed with chemCal version
0.2.1. Confidence intervals for x values obtained from calibrations with
replicate measurements did not take the variation about the means into account.
Please refer to the vignette for details.</p>
- <h2 class="hasAnchor" id="references"><a class="anchor" href="#references"></a>References</h2>
-
+ </div>
+ <div id="references">
+ <h2>References</h2>
<p>Massart, L.M, Vandenginste, B.G.M., Buydens, L.M.C., De Jong, S., Lewi, P.J.,
Smeyers-Verbeke, J. (1997) Handbook of Chemometrics and Qualimetrics: Part A,
p. 200</p>
+ </div>
- <h2 class="hasAnchor" id="examples"><a class="anchor" href="#examples"></a>Examples</h2>
- <pre class="examples"><div class='input'><span class='co'># This is example 7 from Chapter 8 in Massart et al. (1997)</span>
-<span class='va'>m</span> <span class='op'>&lt;-</span> <span class='fu'><a href='https://rdrr.io/r/stats/lm.html'>lm</a></span><span class='op'>(</span><span class='va'>y</span> <span class='op'>~</span> <span class='va'>x</span>, data <span class='op'>=</span> <span class='va'>massart97ex1</span><span class='op'>)</span>
-<span class='fu'>inverse.predict</span><span class='op'>(</span><span class='va'>m</span>, <span class='fl'>15</span><span class='op'>)</span> <span class='co'># 6.1 +- 4.9</span>
-</div><div class='output co'>#&gt; $Prediction
-#&gt; [1] 6.09381
-#&gt;
-#&gt; $`Standard Error`
-#&gt; [1] 1.767278
-#&gt;
-#&gt; $Confidence
-#&gt; [1] 4.906751
-#&gt;
-#&gt; $`Confidence Limits`
-#&gt; [1] 1.187059 11.000561
-#&gt; </div><div class='input'><span class='fu'>inverse.predict</span><span class='op'>(</span><span class='va'>m</span>, <span class='fl'>90</span><span class='op'>)</span> <span class='co'># 43.9 +- 4.9</span>
-</div><div class='output co'>#&gt; $Prediction
-#&gt; [1] 43.93983
-#&gt;
-#&gt; $`Standard Error`
-#&gt; [1] 1.767747
-#&gt;
-#&gt; $Confidence
-#&gt; [1] 4.908053
-#&gt;
-#&gt; $`Confidence Limits`
-#&gt; [1] 39.03178 48.84788
-#&gt; </div><div class='input'><span class='fu'>inverse.predict</span><span class='op'>(</span><span class='va'>m</span>, <span class='fu'><a href='https://rdrr.io/r/base/rep.html'>rep</a></span><span class='op'>(</span><span class='fl'>90</span>,<span class='fl'>5</span><span class='op'>)</span><span class='op'>)</span> <span class='co'># 43.9 +- 3.2</span>
-</div><div class='output co'>#&gt; $Prediction
-#&gt; [1] 43.93983
-#&gt;
-#&gt; $`Standard Error`
-#&gt; [1] 1.141204
-#&gt;
-#&gt; $Confidence
-#&gt; [1] 3.168489
-#&gt;
-#&gt; $`Confidence Limits`
-#&gt; [1] 40.77134 47.10832
-#&gt; </div><div class='input'>
-<span class='co'># For reproducing the results for replicate standard measurements in example 8,</span>
-<span class='co'># we need to do the calibration on the means when using chemCal &gt; 0.2</span>
-<span class='va'>weights</span> <span class='op'>&lt;-</span> <span class='fu'><a href='https://rdrr.io/r/base/with.html'>with</a></span><span class='op'>(</span><span class='va'>massart97ex3</span>, <span class='op'>{</span>
- <span class='va'>yx</span> <span class='op'>&lt;-</span> <span class='fu'><a href='https://rdrr.io/r/base/split.html'>split</a></span><span class='op'>(</span><span class='va'>y</span>, <span class='va'>x</span><span class='op'>)</span>
- <span class='va'>ybar</span> <span class='op'>&lt;-</span> <span class='fu'><a href='https://rdrr.io/r/base/lapply.html'>sapply</a></span><span class='op'>(</span><span class='va'>yx</span>, <span class='va'>mean</span><span class='op'>)</span>
- <span class='va'>s</span> <span class='op'>&lt;-</span> <span class='fu'><a href='https://rdrr.io/r/base/Round.html'>round</a></span><span class='op'>(</span><span class='fu'><a href='https://rdrr.io/r/base/lapply.html'>sapply</a></span><span class='op'>(</span><span class='va'>yx</span>, <span class='va'>sd</span><span class='op'>)</span>, digits <span class='op'>=</span> <span class='fl'>2</span><span class='op'>)</span>
- <span class='va'>w</span> <span class='op'>&lt;-</span> <span class='fu'><a href='https://rdrr.io/r/base/Round.html'>round</a></span><span class='op'>(</span><span class='fl'>1</span> <span class='op'>/</span> <span class='op'>(</span><span class='va'>s</span><span class='op'>^</span><span class='fl'>2</span><span class='op'>)</span>, digits <span class='op'>=</span> <span class='fl'>3</span><span class='op'>)</span>
-<span class='op'>}</span><span class='op'>)</span>
-
-<span class='va'>massart97ex3.means</span> <span class='op'>&lt;-</span> <span class='fu'><a href='https://rdrr.io/r/stats/aggregate.html'>aggregate</a></span><span class='op'>(</span><span class='va'>y</span> <span class='op'>~</span> <span class='va'>x</span>, <span class='va'>massart97ex3</span>, <span class='va'>mean</span><span class='op'>)</span>
-
-<span class='va'>m3.means</span> <span class='op'>&lt;-</span> <span class='fu'><a href='https://rdrr.io/r/stats/lm.html'>lm</a></span><span class='op'>(</span><span class='va'>y</span> <span class='op'>~</span> <span class='va'>x</span>, w <span class='op'>=</span> <span class='va'>weights</span>, data <span class='op'>=</span> <span class='va'>massart97ex3.means</span><span class='op'>)</span>
-
-<span class='fu'>inverse.predict</span><span class='op'>(</span><span class='va'>m3.means</span>, <span class='fl'>15</span>, ws <span class='op'>=</span> <span class='fl'>1.67</span><span class='op'>)</span> <span class='co'># 5.9 +- 2.5</span>
-</div><div class='output co'>#&gt; $Prediction
-#&gt; [1] 5.865367
-#&gt;
-#&gt; $`Standard Error`
-#&gt; [1] 0.8926109
-#&gt;
-#&gt; $Confidence
-#&gt; [1] 2.478285
-#&gt;
-#&gt; $`Confidence Limits`
-#&gt; [1] 3.387082 8.343652
-#&gt; </div><div class='input'><span class='fu'>inverse.predict</span><span class='op'>(</span><span class='va'>m3.means</span>, <span class='fl'>90</span>, ws <span class='op'>=</span> <span class='fl'>0.145</span><span class='op'>)</span> <span class='co'># 44.1 +- 7.9</span>
-</div><div class='output co'>#&gt; $Prediction
-#&gt; [1] 44.06025
-#&gt;
-#&gt; $`Standard Error`
-#&gt; [1] 2.829162
-#&gt;
-#&gt; $Confidence
-#&gt; [1] 7.855012
-#&gt;
-#&gt; $`Confidence Limits`
-#&gt; [1] 36.20523 51.91526
-#&gt; </div><div class='input'>
-</div></pre>
+ <div id="ref-examples">
+ <h2>Examples</h2>
+ <div class="sourceCode"><pre class="sourceCode r"><code><span class="r-in"><span class="co"># This is example 7 from Chapter 8 in Massart et al. (1997)</span></span>
+<span class="r-in"><span class="va">m</span> <span class="op">&lt;-</span> <span class="fu"><a href="https://rdrr.io/r/stats/lm.html" class="external-link">lm</a></span><span class="op">(</span><span class="va">y</span> <span class="op">~</span> <span class="va">x</span>, data <span class="op">=</span> <span class="va">massart97ex1</span><span class="op">)</span></span>
+<span class="r-in"><span class="fu">inverse.predict</span><span class="op">(</span><span class="va">m</span>, <span class="fl">15</span><span class="op">)</span> <span class="co"># 6.1 +- 4.9</span></span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> $Prediction</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> [1] 6.09381</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> $`Standard Error`</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> [1] 1.767278</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> $Confidence</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> [1] 4.906751</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> $`Confidence Limits`</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> [1] 1.187059 11.000561</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
+<span class="r-in"><span class="fu">inverse.predict</span><span class="op">(</span><span class="va">m</span>, <span class="fl">90</span><span class="op">)</span> <span class="co"># 43.9 +- 4.9</span></span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> $Prediction</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> [1] 43.93983</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> $`Standard Error`</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> [1] 1.767747</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> $Confidence</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> [1] 4.908053</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> $`Confidence Limits`</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> [1] 39.03178 48.84788</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
+<span class="r-in"><span class="fu">inverse.predict</span><span class="op">(</span><span class="va">m</span>, <span class="fu"><a href="https://rdrr.io/r/base/rep.html" class="external-link">rep</a></span><span class="op">(</span><span class="fl">90</span>,<span class="fl">5</span><span class="op">)</span><span class="op">)</span> <span class="co"># 43.9 +- 3.2</span></span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> $Prediction</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> [1] 43.93983</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> $`Standard Error`</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> [1] 1.141204</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> $Confidence</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> [1] 3.168489</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> $`Confidence Limits`</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> [1] 40.77134 47.10832</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
+<span class="r-in"></span>
+<span class="r-in"><span class="co"># For reproducing the results for replicate standard measurements in example 8,</span></span>
+<span class="r-in"><span class="co"># we need to do the calibration on the means when using chemCal &gt; 0.2</span></span>
+<span class="r-in"><span class="va">weights</span> <span class="op">&lt;-</span> <span class="fu"><a href="https://rdrr.io/r/base/with.html" class="external-link">with</a></span><span class="op">(</span><span class="va">massart97ex3</span>, <span class="op">{</span></span>
+<span class="r-in"> <span class="va">yx</span> <span class="op">&lt;-</span> <span class="fu"><a href="https://rdrr.io/r/base/split.html" class="external-link">split</a></span><span class="op">(</span><span class="va">y</span>, <span class="va">x</span><span class="op">)</span></span>
+<span class="r-in"> <span class="va">ybar</span> <span class="op">&lt;-</span> <span class="fu"><a href="https://rdrr.io/r/base/lapply.html" class="external-link">sapply</a></span><span class="op">(</span><span class="va">yx</span>, <span class="va">mean</span><span class="op">)</span></span>
+<span class="r-in"> <span class="va">s</span> <span class="op">&lt;-</span> <span class="fu"><a href="https://rdrr.io/r/base/Round.html" class="external-link">round</a></span><span class="op">(</span><span class="fu"><a href="https://rdrr.io/r/base/lapply.html" class="external-link">sapply</a></span><span class="op">(</span><span class="va">yx</span>, <span class="va">sd</span><span class="op">)</span>, digits <span class="op">=</span> <span class="fl">2</span><span class="op">)</span></span>
+<span class="r-in"> <span class="va">w</span> <span class="op">&lt;-</span> <span class="fu"><a href="https://rdrr.io/r/base/Round.html" class="external-link">round</a></span><span class="op">(</span><span class="fl">1</span> <span class="op">/</span> <span class="op">(</span><span class="va">s</span><span class="op">^</span><span class="fl">2</span><span class="op">)</span>, digits <span class="op">=</span> <span class="fl">3</span><span class="op">)</span></span>
+<span class="r-in"><span class="op">}</span><span class="op">)</span></span>
+<span class="r-in"></span>
+<span class="r-in"><span class="va">massart97ex3.means</span> <span class="op">&lt;-</span> <span class="fu"><a href="https://rdrr.io/r/stats/aggregate.html" class="external-link">aggregate</a></span><span class="op">(</span><span class="va">y</span> <span class="op">~</span> <span class="va">x</span>, <span class="va">massart97ex3</span>, <span class="va">mean</span><span class="op">)</span></span>
+<span class="r-in"></span>
+<span class="r-in"><span class="va">m3.means</span> <span class="op">&lt;-</span> <span class="fu"><a href="https://rdrr.io/r/stats/lm.html" class="external-link">lm</a></span><span class="op">(</span><span class="va">y</span> <span class="op">~</span> <span class="va">x</span>, w <span class="op">=</span> <span class="va">weights</span>, data <span class="op">=</span> <span class="va">massart97ex3.means</span><span class="op">)</span></span>
+<span class="r-in"></span>
+<span class="r-in"><span class="fu">inverse.predict</span><span class="op">(</span><span class="va">m3.means</span>, <span class="fl">15</span>, ws <span class="op">=</span> <span class="fl">1.67</span><span class="op">)</span> <span class="co"># 5.9 +- 2.5</span></span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> $Prediction</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> [1] 5.865367</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> $`Standard Error`</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> [1] 0.8926109</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> $Confidence</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> [1] 2.478285</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> $`Confidence Limits`</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> [1] 3.387082 8.343652</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
+<span class="r-in"><span class="fu">inverse.predict</span><span class="op">(</span><span class="va">m3.means</span>, <span class="fl">90</span>, ws <span class="op">=</span> <span class="fl">0.145</span><span class="op">)</span> <span class="co"># 44.1 +- 7.9</span></span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> $Prediction</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> [1] 44.06025</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> $`Standard Error`</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> [1] 2.829162</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> $Confidence</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> [1] 7.855012</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> $`Confidence Limits`</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> [1] 36.20523 51.91526</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
+<span class="r-in"></span>
+</code></pre></div>
+ </div>
</div>
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diff --git a/docs/reference/lod.html b/docs/reference/lod.html
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analyte concentration that is significantly different from the blank signal
with a first order error alpha (one-sided significance test).
The detection limit, or more precise, the minimum detectable value
(German: Erfassungsgrenze), is then defined as the signal or analyte
concentration where the probability that the signal is not detected although
the analyte is present (type II or false negative error), is beta (also a
- one-sided significance test)." />
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<h1>Estimate a limit of detection (LOD)</h1>
@@ -137,62 +69,52 @@
one-sided significance test).</p>
</div>
- <pre class="usage"><span class='fu'>lod</span><span class='op'>(</span><span class='va'>object</span>, <span class='va'>...</span>, alpha <span class='op'>=</span> <span class='fl'>0.05</span>, beta <span class='op'>=</span> <span class='fl'>0.05</span>, method <span class='op'>=</span> <span class='st'>"default"</span>, tol <span class='op'>=</span> <span class='st'>"default"</span><span class='op'>)</span></pre>
+ <div id="ref-usage">
+ <div class="sourceCode"><pre class="sourceCode r"><code><span class="fu">lod</span><span class="op">(</span><span class="va">object</span>, <span class="va">...</span>, alpha <span class="op">=</span> <span class="fl">0.05</span>, beta <span class="op">=</span> <span class="fl">0.05</span>, method <span class="op">=</span> <span class="st">"default"</span>, tol <span class="op">=</span> <span class="st">"default"</span><span class="op">)</span></code></pre></div>
+ </div>
- <h2 class="hasAnchor" id="arguments"><a class="anchor" href="#arguments"></a>Arguments</h2>
- <table class="ref-arguments">
- <colgroup><col class="name" /><col class="desc" /></colgroup>
- <tr>
- <th>object</th>
- <td><p>A univariate model object of class <code><a href='https://rdrr.io/r/stats/lm.html'>lm</a></code> or
- <code><a href='https://rdrr.io/pkg/MASS/man/rlm.html'>rlm</a></code>
+ <div id="arguments">
+ <h2>Arguments</h2>
+ <dl><dt>object</dt>
+<dd><p>A univariate model object of class <code><a href="https://rdrr.io/r/stats/lm.html" class="external-link">lm</a></code> or
+ <code><a href="https://rdrr.io/pkg/MASS/man/rlm.html" class="external-link">rlm</a></code>
with model formula <code>y ~ x</code> or <code>y ~ x - 1</code>,
- optionally from a weighted regression.</p></td>
- </tr>
- <tr>
- <th>...</th>
- <td><p>Placeholder for further arguments that might be needed by
- future implementations.</p></td>
- </tr>
- <tr>
- <th>alpha</th>
- <td><p>The error tolerance for the decision limit (critical value).</p></td>
- </tr>
- <tr>
- <th>beta</th>
- <td><p>The error tolerance beta for the detection limit.</p></td>
- </tr>
- <tr>
- <th>method</th>
- <td><p>The &#8220;default&#8221; method uses a prediction interval at the LOD
+ optionally from a weighted regression.</p></dd>
+<dt>...</dt>
+<dd><p>Placeholder for further arguments that might be needed by
+ future implementations.</p></dd>
+<dt>alpha</dt>
+<dd><p>The error tolerance for the decision limit (critical value).</p></dd>
+<dt>beta</dt>
+<dd><p>The error tolerance beta for the detection limit.</p></dd>
+<dt>method</dt>
+<dd><p>The “default” method uses a prediction interval at the LOD
for the estimation of the LOD, which obviously requires
iteration. This is described for example in Massart, p. 432 ff.
- The &#8220;din&#8221; method uses the prediction interval at
- x = 0 as an approximation.</p></td>
- </tr>
- <tr>
- <th>tol</th>
- <td><p>When the &#8220;default&#8221; method is used, the default tolerance
+ The “din” method uses the prediction interval at
+ x = 0 as an approximation.</p></dd>
+<dt>tol</dt>
+<dd><p>When the “default” method is used, the default tolerance
for the LOD on the x scale is the value of the smallest non-zero standard
- divided by 1000. Can be set to a numeric value to override this.</p></td>
- </tr>
- </table>
-
- <h2 class="hasAnchor" id="value"><a class="anchor" href="#value"></a>Value</h2>
-
+ divided by 1000. Can be set to a numeric value to override this.</p></dd>
+</dl></div>
+ <div id="value">
+ <h2>Value</h2>
<p>A list containig the corresponding x and y values of the estimated limit of
detection of a model used for calibration.</p>
- <h2 class="hasAnchor" id="note"><a class="anchor" href="#note"></a>Note</h2>
-
+ </div>
+ <div id="note">
+ <h2>Note</h2>
<p>- The default values for alpha and beta are the ones recommended by IUPAC.
- The estimation of the LOD in terms of the analyte amount/concentration
xD from the LOD in the signal domain SD is done by simply inverting the
calibration function (i.e. assuming a known calibration function).
- The calculation of a LOD from weighted calibration models requires
- a weights argument for the internally used <code><a href='https://rdrr.io/r/stats/predict.lm.html'>predict.lm</a></code>
+ a weights argument for the internally used <code><a href="https://rdrr.io/r/stats/predict.lm.html" class="external-link">predict.lm</a></code>
function, which is currently not supported in R.</p>
- <h2 class="hasAnchor" id="references"><a class="anchor" href="#references"></a>References</h2>
-
+ </div>
+ <div id="references">
+ <h2>References</h2>
<p>Massart, L.M, Vandenginste, B.G.M., Buydens, L.M.C., De Jong, S., Lewi, P.J.,
Smeyers-Verbeke, J. (1997) Handbook of Chemometrics and Qualimetrics: Part A,
Chapter 13.7.8</p>
@@ -202,53 +124,55 @@
<p>Currie, L. A. (1997) Nomenclature in evaluation of analytical methods including
detection and quantification capabilities (IUPAC Recommendations 1995).
Analytica Chimica Acta 391, 105 - 126.</p>
- <h2 class="hasAnchor" id="see-also"><a class="anchor" href="#see-also"></a>See also</h2>
-
- <div class='dont-index'><p>Examples for <code><a href='din32645.html'>din32645</a></code></p></div>
-
- <h2 class="hasAnchor" id="examples"><a class="anchor" href="#examples"></a>Examples</h2>
- <pre class="examples"><div class='input'><span class='va'>m</span> <span class='op'>&lt;-</span> <span class='fu'><a href='https://rdrr.io/r/stats/lm.html'>lm</a></span><span class='op'>(</span><span class='va'>y</span> <span class='op'>~</span> <span class='va'>x</span>, data <span class='op'>=</span> <span class='va'>din32645</span><span class='op'>)</span>
-<span class='fu'>lod</span><span class='op'>(</span><span class='va'>m</span><span class='op'>)</span>
-</div><div class='output co'>#&gt; $x
-#&gt; [1] 0.08655484
-#&gt;
-#&gt; $y
-#&gt; [1] 3317.154
-#&gt; </div><div class='input'>
-<span class='co'># The critical value (decision limit, German Nachweisgrenze) can be obtained</span>
-<span class='co'># by using beta = 0.5:</span>
-<span class='fu'>lod</span><span class='op'>(</span><span class='va'>m</span>, alpha <span class='op'>=</span> <span class='fl'>0.01</span>, beta <span class='op'>=</span> <span class='fl'>0.5</span><span class='op'>)</span>
-</div><div class='output co'>#&gt; $x
-#&gt; [1] 0.0698127
-#&gt;
-#&gt; $y
-#&gt; [1] 3155.393
-#&gt; </div></pre>
+ </div>
+ <div id="see-also">
+ <h2>See also</h2>
+ <div class="dont-index"><p>Examples for <code><a href="din32645.html">din32645</a></code></p></div>
+ </div>
+
+ <div id="ref-examples">
+ <h2>Examples</h2>
+ <div class="sourceCode"><pre class="sourceCode r"><code><span class="r-in"><span class="va">m</span> <span class="op">&lt;-</span> <span class="fu"><a href="https://rdrr.io/r/stats/lm.html" class="external-link">lm</a></span><span class="op">(</span><span class="va">y</span> <span class="op">~</span> <span class="va">x</span>, data <span class="op">=</span> <span class="va">din32645</span><span class="op">)</span></span>
+<span class="r-in"><span class="fu">lod</span><span class="op">(</span><span class="va">m</span><span class="op">)</span> </span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> $x</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> [1] 0.08655484</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> $y</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> [1] 3317.154</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
+<span class="r-in"></span>
+<span class="r-in"><span class="co"># The critical value (decision limit, German Nachweisgrenze) can be obtained</span></span>
+<span class="r-in"><span class="co"># by using beta = 0.5:</span></span>
+<span class="r-in"><span class="fu">lod</span><span class="op">(</span><span class="va">m</span>, alpha <span class="op">=</span> <span class="fl">0.01</span>, beta <span class="op">=</span> <span class="fl">0.5</span><span class="op">)</span></span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> $x</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> [1] 0.0698127</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> $y</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> [1] 3155.393</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
+</code></pre></div>
+ </div>
</div>
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+<!-- Generated by pkgdown: do not edit by hand --><html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="utf-8"><meta http-equiv="X-UA-Compatible" content="IE=edge"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>Estimate a limit of quantification (LOQ) — loq • chemCal</title><!-- jquery --><script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.4.1/jquery.min.js" integrity="sha256-CSXorXvZcTkaix6Yvo6HppcZGetbYMGWSFlBw8HfCJo=" crossorigin="anonymous"></script><!-- Bootstrap --><link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.4.1/css/bootstrap.min.css" integrity="sha256-bZLfwXAP04zRMK2BjiO8iu9pf4FbLqX6zitd+tIvLhE=" crossorigin="anonymous"><script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.4.1/js/bootstrap.min.js" integrity="sha256-nuL8/2cJ5NDSSwnKD8VqreErSWHtnEP9E7AySL+1ev4=" crossorigin="anonymous"></script><!-- bootstrap-toc --><link rel="stylesheet" href="../bootstrap-toc.css"><script src="../bootstrap-toc.js"></script><!-- Font Awesome icons --><link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.12.1/css/all.min.css" integrity="sha256-mmgLkCYLUQbXn0B1SRqzHar6dCnv9oZFPEC1g1cwlkk=" crossorigin="anonymous"><link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.12.1/css/v4-shims.min.css" integrity="sha256-wZjR52fzng1pJHwx4aV2AO3yyTOXrcDW7jBpJtTwVxw=" crossorigin="anonymous"><!-- clipboard.js --><script src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.6/clipboard.min.js" integrity="sha256-inc5kl9MA1hkeYUt+EC3BhlIgyp/2jDIyBLS6k3UxPI=" crossorigin="anonymous"></script><!-- headroom.js --><script src="https://cdnjs.cloudflare.com/ajax/libs/headroom/0.11.0/headroom.min.js" integrity="sha256-AsUX4SJE1+yuDu5+mAVzJbuYNPHj/WroHuZ8Ir/CkE0=" crossorigin="anonymous"></script><script src="https://cdnjs.cloudflare.com/ajax/libs/headroom/0.11.0/jQuery.headroom.min.js" integrity="sha256-ZX/yNShbjqsohH1k95liqY9Gd8uOiE1S4vZc+9KQ1K4=" crossorigin="anonymous"></script><!-- pkgdown --><link href="../pkgdown.css" rel="stylesheet"><script src="../pkgdown.js"></script><meta property="og:title" content="Estimate a limit of quantification (LOQ) — loq"><meta property="og:description" content="The limit of quantification is the x value, where the relative error
of the quantification given the calibration model reaches a prespecified
value 1/k. Thus, it is the solution of the equation
$$L = k c(L)$$
where c(L) is half of the length of the confidence interval at the limit L
(DIN 32645, equivalent to ISO 11843). c(L) is internally estimated by
- inverse.predict, and L is obtained by iteration." />
-
-
-
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+ inverse.predict, and L is obtained by iteration."><!-- mathjax --><script src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/MathJax.js" integrity="sha256-nvJJv9wWKEm88qvoQl9ekL2J+k/RWIsaSScxxlsrv8k=" crossorigin="anonymous"></script><script src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/config/TeX-AMS-MML_HTMLorMML.js" integrity="sha256-84DKXVJXs0/F8OTMzX4UR909+jtl4G7SPypPavF+GfA=" crossorigin="anonymous"></script><!--[if lt IE 9]>
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<script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script>
-<![endif]-->
-
-
-
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+<![endif]--></head><body data-spy="scroll" data-target="#toc">
+
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- <header>
- <div class="navbar navbar-default navbar-fixed-top" role="navigation">
+ <header><div class="navbar navbar-default navbar-fixed-top" role="navigation">
<div class="container">
<div class="navbar-header">
<button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar" aria-expanded="false">
@@ -78,19 +23,12 @@
</button>
<span class="navbar-brand">
<a class="navbar-link" href="../index.html">chemCal</a>
- <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="Released version">0.2.2</span>
+ <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.2.3</span>
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</div>
<div id="navbar" class="navbar-collapse collapse">
- <ul class="nav navbar-nav">
- <li>
- <a href="../index.html">
- <span class="fas fa-home fa-lg"></span>
-
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-</li>
-<li>
+ <ul class="nav navbar-nav"><li>
<a href="../articles/chemCal.html">Get started</a>
</li>
<li>
@@ -99,25 +37,19 @@
<li>
<a href="../news/index.html">Changelog</a>
</li>
- </ul>
- <ul class="nav navbar-nav navbar-right">
- <li>
- <a href="https://github.com/jranke/chemCal/">
+ </ul><ul class="nav navbar-nav navbar-right"><li>
+ <a href="https://github.com/jranke/chemCal/" class="external-link">
<span class="fab fa-github fa-lg"></span>
</a>
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+ </ul></div><!--/.nav-collapse -->
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- </header>
-
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+ </header><div class="row">
<div class="col-md-9 contents">
<div class="page-header">
<h1>Estimate a limit of quantification (LOQ)</h1>
@@ -132,119 +64,106 @@
$$L = k c(L)$$
where c(L) is half of the length of the confidence interval at the limit L
(DIN 32645, equivalent to ISO 11843). c(L) is internally estimated by
- <code><a href='inverse.predict.html'>inverse.predict</a></code>, and L is obtained by iteration.</p>
+ <code><a href="inverse.predict.html">inverse.predict</a></code>, and L is obtained by iteration.</p>
</div>
- <pre class="usage"><span class='fu'>loq</span><span class='op'>(</span><span class='va'>object</span>, <span class='va'>...</span>, alpha <span class='op'>=</span> <span class='fl'>0.05</span>, k <span class='op'>=</span> <span class='fl'>3</span>, n <span class='op'>=</span> <span class='fl'>1</span>, w.loq <span class='op'>=</span> <span class='st'>"auto"</span>,
- var.loq <span class='op'>=</span> <span class='st'>"auto"</span>, tol <span class='op'>=</span> <span class='st'>"default"</span><span class='op'>)</span></pre>
+ <div id="ref-usage">
+ <div class="sourceCode"><pre class="sourceCode r"><code><span class="fu">loq</span><span class="op">(</span><span class="va">object</span>, <span class="va">...</span>, alpha <span class="op">=</span> <span class="fl">0.05</span>, k <span class="op">=</span> <span class="fl">3</span>, n <span class="op">=</span> <span class="fl">1</span>, w.loq <span class="op">=</span> <span class="st">"auto"</span>,
+ var.loq <span class="op">=</span> <span class="st">"auto"</span>, tol <span class="op">=</span> <span class="st">"default"</span><span class="op">)</span></code></pre></div>
+ </div>
- <h2 class="hasAnchor" id="arguments"><a class="anchor" href="#arguments"></a>Arguments</h2>
- <table class="ref-arguments">
- <colgroup><col class="name" /><col class="desc" /></colgroup>
- <tr>
- <th>object</th>
- <td><p>A univariate model object of class <code><a href='https://rdrr.io/r/stats/lm.html'>lm</a></code> or
- <code><a href='https://rdrr.io/pkg/MASS/man/rlm.html'>rlm</a></code>
+ <div id="arguments">
+ <h2>Arguments</h2>
+ <dl><dt>object</dt>
+<dd><p>A univariate model object of class <code><a href="https://rdrr.io/r/stats/lm.html" class="external-link">lm</a></code> or
+ <code><a href="https://rdrr.io/pkg/MASS/man/rlm.html" class="external-link">rlm</a></code>
with model formula <code>y ~ x</code> or <code>y ~ x - 1</code>,
optionally from a weighted regression. If weights are specified
in the model, either <code>w.loq</code> or <code>var.loq</code> have to
- be specified.</p></td>
- </tr>
- <tr>
- <th>alpha</th>
- <td><p>The error tolerance for the prediction of x values in the calculation.</p></td>
- </tr>
- <tr>
- <th>...</th>
- <td><p>Placeholder for further arguments that might be needed by
- future implementations.</p></td>
- </tr>
- <tr>
- <th>k</th>
- <td><p>The inverse of the maximum relative error tolerated at the
- desired LOQ.</p></td>
- </tr>
- <tr>
- <th>n</th>
- <td><p>The number of replicate measurements for which the LOQ should be
- specified.</p></td>
- </tr>
- <tr>
- <th>w.loq</th>
- <td><p>The weight that should be attributed to the LOQ. Defaults
+ be specified.</p></dd>
+<dt>alpha</dt>
+<dd><p>The error tolerance for the prediction of x values in the calculation.</p></dd>
+<dt>...</dt>
+<dd><p>Placeholder for further arguments that might be needed by
+ future implementations.</p></dd>
+<dt>k</dt>
+<dd><p>The inverse of the maximum relative error tolerated at the
+ desired LOQ.</p></dd>
+<dt>n</dt>
+<dd><p>The number of replicate measurements for which the LOQ should be
+ specified.</p></dd>
+<dt>w.loq</dt>
+<dd><p>The weight that should be attributed to the LOQ. Defaults
to one for unweighted regression, and to the mean of the weights
- for weighted regression. See <code><a href='massart97ex3.html'>massart97ex3</a></code> for
+ for weighted regression. See <code><a href="massart97ex3.html">massart97ex3</a></code> for
an example how to take advantage of knowledge about the
- variance function.</p></td>
- </tr>
- <tr>
- <th>var.loq</th>
- <td><p>The approximate variance at the LOQ. The default value is
- calculated from the model.</p></td>
- </tr>
- <tr>
- <th>tol</th>
- <td><p>The default tolerance for the LOQ on the x scale is the value of the
+ variance function.</p></dd>
+<dt>var.loq</dt>
+<dd><p>The approximate variance at the LOQ. The default value is
+ calculated from the model.</p></dd>
+<dt>tol</dt>
+<dd><p>The default tolerance for the LOQ on the x scale is the value of the
smallest non-zero standard divided by 1000. Can be set to a
- numeric value to override this.</p></td>
- </tr>
- </table>
-
- <h2 class="hasAnchor" id="value"><a class="anchor" href="#value"></a>Value</h2>
-
+ numeric value to override this.</p></dd>
+</dl></div>
+ <div id="value">
+ <h2>Value</h2>
<p>The estimated limit of quantification for a model used for calibration.</p>
- <h2 class="hasAnchor" id="note"><a class="anchor" href="#note"></a>Note</h2>
-
+ </div>
+ <div id="note">
+ <h2>Note</h2>
<p>- IUPAC recommends to base the LOQ on the standard deviation of the signal
where x = 0.
- The calculation of a LOQ based on weighted regression is non-standard
and therefore not tested. Feedback is welcome.</p>
- <h2 class="hasAnchor" id="see-also"><a class="anchor" href="#see-also"></a>See also</h2>
-
- <div class='dont-index'><p>Examples for <code><a href='din32645.html'>din32645</a></code></p></div>
-
- <h2 class="hasAnchor" id="examples"><a class="anchor" href="#examples"></a>Examples</h2>
- <pre class="examples"><div class='input'><span class='va'>m</span> <span class='op'>&lt;-</span> <span class='fu'><a href='https://rdrr.io/r/stats/lm.html'>lm</a></span><span class='op'>(</span><span class='va'>y</span> <span class='op'>~</span> <span class='va'>x</span>, data <span class='op'>=</span> <span class='va'>massart97ex1</span><span class='op'>)</span>
-<span class='fu'>loq</span><span class='op'>(</span><span class='va'>m</span><span class='op'>)</span>
-</div><div class='output co'>#&gt; $x
-#&gt; [1] 13.97764
-#&gt;
-#&gt; $y
-#&gt; [1] 30.6235
-#&gt; </div><div class='input'>
-<span class='co'># We can get better by using replicate measurements</span>
-<span class='fu'>loq</span><span class='op'>(</span><span class='va'>m</span>, n <span class='op'>=</span> <span class='fl'>3</span><span class='op'>)</span>
-</div><div class='output co'>#&gt; $x
-#&gt; [1] 9.971963
-#&gt;
-#&gt; $y
-#&gt; [1] 22.68539
-#&gt; </div></pre>
+ </div>
+ <div id="see-also">
+ <h2>See also</h2>
+ <div class="dont-index"><p>Examples for <code><a href="din32645.html">din32645</a></code></p></div>
+ </div>
+
+ <div id="ref-examples">
+ <h2>Examples</h2>
+ <div class="sourceCode"><pre class="sourceCode r"><code><span class="r-in"><span class="va">m</span> <span class="op">&lt;-</span> <span class="fu"><a href="https://rdrr.io/r/stats/lm.html" class="external-link">lm</a></span><span class="op">(</span><span class="va">y</span> <span class="op">~</span> <span class="va">x</span>, data <span class="op">=</span> <span class="va">massart97ex1</span><span class="op">)</span></span>
+<span class="r-in"><span class="fu">loq</span><span class="op">(</span><span class="va">m</span><span class="op">)</span></span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> $x</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> [1] 13.97764</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> $y</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> [1] 30.6235</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
+<span class="r-in"></span>
+<span class="r-in"><span class="co"># We can get better by using replicate measurements</span></span>
+<span class="r-in"><span class="fu">loq</span><span class="op">(</span><span class="va">m</span>, n <span class="op">=</span> <span class="fl">3</span><span class="op">)</span></span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> $x</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> [1] 9.971963</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> $y</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> [1] 22.68539</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
+</code></pre></div>
+ </div>
</div>
<div class="col-md-3 hidden-xs hidden-sm" id="pkgdown-sidebar">
- <nav id="toc" data-toggle="toc" class="sticky-top">
- <h2 data-toc-skip>Contents</h2>
- </nav>
- </div>
+ <nav id="toc" data-toggle="toc" class="sticky-top"><h2 data-toc-skip>Contents</h2>
+ </nav></div>
</div>
- <footer>
- <div class="copyright">
- <p>Developed by Johannes Ranke.</p>
+ <footer><div class="copyright">
+ <p></p><p>Developed by Johannes Ranke.</p>
</div>
<div class="pkgdown">
- <p>Site built with <a href="https://pkgdown.r-lib.org/">pkgdown</a> 1.6.1.</p>
+ <p></p><p>Site built with <a href="https://pkgdown.r-lib.org/" class="external-link">pkgdown</a> 2.0.2.</p>
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diff --git a/docs/reference/massart97ex1.html b/docs/reference/massart97ex1.html
index c82bf6f..e5dd85a 100644
--- a/docs/reference/massart97ex1.html
+++ b/docs/reference/massart97ex1.html
@@ -1,67 +1,12 @@
-<!-- Generated by pkgdown: do not edit by hand -->
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-
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-
-<!--[if lt IE 9]>
+<!-- Generated by pkgdown: do not edit by hand --><html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="utf-8"><meta http-equiv="X-UA-Compatible" content="IE=edge"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>Calibration data from Massart et al. (1997), example 1 — massart97ex1 • chemCal</title><!-- jquery --><script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.4.1/jquery.min.js" integrity="sha256-CSXorXvZcTkaix6Yvo6HppcZGetbYMGWSFlBw8HfCJo=" crossorigin="anonymous"></script><!-- Bootstrap --><link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.4.1/css/bootstrap.min.css" integrity="sha256-bZLfwXAP04zRMK2BjiO8iu9pf4FbLqX6zitd+tIvLhE=" crossorigin="anonymous"><script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.4.1/js/bootstrap.min.js" integrity="sha256-nuL8/2cJ5NDSSwnKD8VqreErSWHtnEP9E7AySL+1ev4=" crossorigin="anonymous"></script><!-- bootstrap-toc --><link rel="stylesheet" href="../bootstrap-toc.css"><script src="../bootstrap-toc.js"></script><!-- Font Awesome icons --><link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.12.1/css/all.min.css" integrity="sha256-mmgLkCYLUQbXn0B1SRqzHar6dCnv9oZFPEC1g1cwlkk=" crossorigin="anonymous"><link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.12.1/css/v4-shims.min.css" integrity="sha256-wZjR52fzng1pJHwx4aV2AO3yyTOXrcDW7jBpJtTwVxw=" crossorigin="anonymous"><!-- clipboard.js --><script src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.6/clipboard.min.js" integrity="sha256-inc5kl9MA1hkeYUt+EC3BhlIgyp/2jDIyBLS6k3UxPI=" crossorigin="anonymous"></script><!-- headroom.js --><script src="https://cdnjs.cloudflare.com/ajax/libs/headroom/0.11.0/headroom.min.js" integrity="sha256-AsUX4SJE1+yuDu5+mAVzJbuYNPHj/WroHuZ8Ir/CkE0=" crossorigin="anonymous"></script><script src="https://cdnjs.cloudflare.com/ajax/libs/headroom/0.11.0/jQuery.headroom.min.js" integrity="sha256-ZX/yNShbjqsohH1k95liqY9Gd8uOiE1S4vZc+9KQ1K4=" crossorigin="anonymous"></script><!-- pkgdown --><link href="../pkgdown.css" rel="stylesheet"><script src="../pkgdown.js"></script><meta property="og:title" content="Calibration data from Massart et al. (1997), example 1 — massart97ex1"><meta property="og:description" content="Sample dataset from p. 175 to test the package."><!-- mathjax --><script src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/MathJax.js" integrity="sha256-nvJJv9wWKEm88qvoQl9ekL2J+k/RWIsaSScxxlsrv8k=" crossorigin="anonymous"></script><script src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/config/TeX-AMS-MML_HTMLorMML.js" integrity="sha256-84DKXVJXs0/F8OTMzX4UR909+jtl4G7SPypPavF+GfA=" crossorigin="anonymous"></script><!--[if lt IE 9]>
<script src="https://oss.maxcdn.com/html5shiv/3.7.3/html5shiv.min.js"></script>
<script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script>
-<![endif]-->
-
-
-
- </head>
+<![endif]--></head><body data-spy="scroll" data-target="#toc">
+
- <body data-spy="scroll" data-target="#toc">
<div class="container template-reference-topic">
- <header>
- <div class="navbar navbar-default navbar-fixed-top" role="navigation">
+ <header><div class="navbar navbar-default navbar-fixed-top" role="navigation">
<div class="container">
<div class="navbar-header">
<button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar" aria-expanded="false">
@@ -72,19 +17,12 @@
</button>
<span class="navbar-brand">
<a class="navbar-link" href="../index.html">chemCal</a>
- <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="Released version">0.2.2</span>
+ <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.2.3</span>
</span>
</div>
<div id="navbar" class="navbar-collapse collapse">
- <ul class="nav navbar-nav">
- <li>
- <a href="../index.html">
- <span class="fas fa-home fa-lg"></span>
-
- </a>
-</li>
-<li>
+ <ul class="nav navbar-nav"><li>
<a href="../articles/chemCal.html">Get started</a>
</li>
<li>
@@ -93,25 +31,19 @@
<li>
<a href="../news/index.html">Changelog</a>
</li>
- </ul>
- <ul class="nav navbar-nav navbar-right">
- <li>
- <a href="https://github.com/jranke/chemCal/">
+ </ul><ul class="nav navbar-nav navbar-right"><li>
+ <a href="https://github.com/jranke/chemCal/" class="external-link">
<span class="fab fa-github fa-lg"></span>
</a>
</li>
- </ul>
-
- </div><!--/.nav-collapse -->
+ </ul></div><!--/.nav-collapse -->
</div><!--/.container -->
</div><!--/.navbar -->
- </header>
-
-<div class="row">
+ </header><div class="row">
<div class="col-md-9 contents">
<div class="page-header">
<h1>Calibration data from Massart et al. (1997), example 1</h1>
@@ -123,43 +55,42 @@
<p>Sample dataset from p. 175 to test the package.</p>
</div>
- <pre class="usage"><span class='fu'><a href='https://rdrr.io/r/utils/data.html'>data</a></span><span class='op'>(</span><span class='va'>massart97ex1</span><span class='op'>)</span></pre>
-
-
- <h2 class="hasAnchor" id="format"><a class="anchor" href="#format"></a>Format</h2>
+ <div id="ref-usage">
+ <div class="sourceCode"><pre class="sourceCode r"><code><span class="fu"><a href="https://rdrr.io/r/utils/data.html" class="external-link">data</a></span><span class="op">(</span><span class="va">massart97ex1</span><span class="op">)</span></code></pre></div>
+ </div>
+ <div id="format">
+ <h2>Format</h2>
<p>A dataframe containing 6 observations of x and y data.</p>
- <h2 class="hasAnchor" id="source"><a class="anchor" href="#source"></a>Source</h2>
-
+ </div>
+ <div id="source">
+ <h2>Source</h2>
<p>Massart, L.M, Vandenginste, B.G.M., Buydens, L.M.C., De Jong, S., Lewi, P.J.,
Smeyers-Verbeke, J. (1997) Handbook of Chemometrics and Qualimetrics: Part A,
Chapter 8.</p>
+ </div>
</div>
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<h1>Calibration data from Massart et al. (1997), example 3</h1>
@@ -123,117 +55,123 @@
<p>Sample dataset from p. 188 to test the package.</p>
</div>
- <pre class="usage"><span class='va'>massart97ex3</span></pre>
-
-
- <h2 class="hasAnchor" id="format"><a class="anchor" href="#format"></a>Format</h2>
+ <div id="ref-usage">
+ <div class="sourceCode"><pre class="sourceCode r"><code><span class="va">massart97ex3</span></code></pre></div>
+ </div>
+ <div id="format">
+ <h2>Format</h2>
<p>A dataframe containing 6 levels of x values with 5
observations of y for each level.</p>
- <h2 class="hasAnchor" id="source"><a class="anchor" href="#source"></a>Source</h2>
-
+ </div>
+ <div id="source">
+ <h2>Source</h2>
<p>Massart, L.M, Vandenginste, B.G.M., Buydens, L.M.C., De Jong, S., Lewi, P.J.,
Smeyers-Verbeke, J. (1997) Handbook of Chemometrics and Qualimetrics: Part A,
Chapter 8.</p>
+ </div>
- <h2 class="hasAnchor" id="examples"><a class="anchor" href="#examples"></a>Examples</h2>
- <pre class="examples"><div class='input'><span class='co'># For reproducing the results for replicate standard measurements in example 8,</span>
-<span class='co'># we need to do the calibration on the means when using chemCal &gt; 0.2</span>
-<span class='va'>weights</span> <span class='op'>&lt;-</span> <span class='fu'><a href='https://rdrr.io/r/base/with.html'>with</a></span><span class='op'>(</span><span class='va'>massart97ex3</span>, <span class='op'>{</span>
- <span class='va'>yx</span> <span class='op'>&lt;-</span> <span class='fu'><a href='https://rdrr.io/r/base/split.html'>split</a></span><span class='op'>(</span><span class='va'>y</span>, <span class='va'>x</span><span class='op'>)</span>
- <span class='va'>ybar</span> <span class='op'>&lt;-</span> <span class='fu'><a href='https://rdrr.io/r/base/lapply.html'>sapply</a></span><span class='op'>(</span><span class='va'>yx</span>, <span class='va'>mean</span><span class='op'>)</span>
- <span class='va'>s</span> <span class='op'>&lt;-</span> <span class='fu'><a href='https://rdrr.io/r/base/Round.html'>round</a></span><span class='op'>(</span><span class='fu'><a href='https://rdrr.io/r/base/lapply.html'>sapply</a></span><span class='op'>(</span><span class='va'>yx</span>, <span class='va'>sd</span><span class='op'>)</span>, digits <span class='op'>=</span> <span class='fl'>2</span><span class='op'>)</span>
- <span class='va'>w</span> <span class='op'>&lt;-</span> <span class='fu'><a href='https://rdrr.io/r/base/Round.html'>round</a></span><span class='op'>(</span><span class='fl'>1</span> <span class='op'>/</span> <span class='op'>(</span><span class='va'>s</span><span class='op'>^</span><span class='fl'>2</span><span class='op'>)</span>, digits <span class='op'>=</span> <span class='fl'>3</span><span class='op'>)</span>
-<span class='op'>}</span><span class='op'>)</span>
-
-<span class='va'>massart97ex3.means</span> <span class='op'>&lt;-</span> <span class='fu'><a href='https://rdrr.io/r/stats/aggregate.html'>aggregate</a></span><span class='op'>(</span><span class='va'>y</span> <span class='op'>~</span> <span class='va'>x</span>, <span class='va'>massart97ex3</span>, <span class='va'>mean</span><span class='op'>)</span>
-
-<span class='va'>m3.means</span> <span class='op'>&lt;-</span> <span class='fu'><a href='https://rdrr.io/r/stats/lm.html'>lm</a></span><span class='op'>(</span><span class='va'>y</span> <span class='op'>~</span> <span class='va'>x</span>, w <span class='op'>=</span> <span class='va'>weights</span>, data <span class='op'>=</span> <span class='va'>massart97ex3.means</span><span class='op'>)</span>
-
-<span class='co'># The following concords with the book p. 200</span>
-<span class='fu'><a href='inverse.predict.html'>inverse.predict</a></span><span class='op'>(</span><span class='va'>m3.means</span>, <span class='fl'>15</span>, ws <span class='op'>=</span> <span class='fl'>1.67</span><span class='op'>)</span> <span class='co'># 5.9 +- 2.5</span>
-</div><div class='output co'>#&gt; $Prediction
-#&gt; [1] 5.865367
-#&gt;
-#&gt; $`Standard Error`
-#&gt; [1] 0.8926109
-#&gt;
-#&gt; $Confidence
-#&gt; [1] 2.478285
-#&gt;
-#&gt; $`Confidence Limits`
-#&gt; [1] 3.387082 8.343652
-#&gt; </div><div class='input'><span class='fu'><a href='inverse.predict.html'>inverse.predict</a></span><span class='op'>(</span><span class='va'>m3.means</span>, <span class='fl'>90</span>, ws <span class='op'>=</span> <span class='fl'>0.145</span><span class='op'>)</span> <span class='co'># 44.1 +- 7.9</span>
-</div><div class='output co'>#&gt; $Prediction
-#&gt; [1] 44.06025
-#&gt;
-#&gt; $`Standard Error`
-#&gt; [1] 2.829162
-#&gt;
-#&gt; $Confidence
-#&gt; [1] 7.855012
-#&gt;
-#&gt; $`Confidence Limits`
-#&gt; [1] 36.20523 51.91526
-#&gt; </div><div class='input'>
-<span class='co'># The LOD is only calculated for models from unweighted regression</span>
-<span class='co'># with this version of chemCal</span>
-<span class='va'>m0</span> <span class='op'>&lt;-</span> <span class='fu'><a href='https://rdrr.io/r/stats/lm.html'>lm</a></span><span class='op'>(</span><span class='va'>y</span> <span class='op'>~</span> <span class='va'>x</span>, data <span class='op'>=</span> <span class='va'>massart97ex3</span><span class='op'>)</span>
-<span class='fu'><a href='lod.html'>lod</a></span><span class='op'>(</span><span class='va'>m0</span><span class='op'>)</span>
-</div><div class='output co'>#&gt; $x
-#&gt; [1] 5.407085
-#&gt;
-#&gt; $y
-#&gt; [1] 13.63911
-#&gt; </div><div class='input'>
-<span class='co'># Limit of quantification from unweighted regression</span>
-<span class='fu'><a href='loq.html'>loq</a></span><span class='op'>(</span><span class='va'>m0</span><span class='op'>)</span>
-</div><div class='output co'>#&gt; $x
-#&gt; [1] 9.627349
-#&gt;
-#&gt; $y
-#&gt; [1] 22.00246
-#&gt; </div><div class='input'>
-<span class='co'># For calculating the limit of quantification from a model from weighted</span>
-<span class='co'># regression, we need to supply weights, internally used for inverse.predict</span>
-<span class='co'># If we are not using a variance function, we can use the weight from</span>
-<span class='co'># the above example as a first approximation (x = 15 is close to our</span>
-<span class='co'># loq approx 14 from above).</span>
-<span class='fu'><a href='loq.html'>loq</a></span><span class='op'>(</span><span class='va'>m3.means</span>, w.loq <span class='op'>=</span> <span class='fl'>1.67</span><span class='op'>)</span>
-</div><div class='output co'>#&gt; $x
-#&gt; [1] 7.346195
-#&gt;
-#&gt; $y
-#&gt; [1] 17.90777
-#&gt; </div><div class='input'><span class='co'># The weight for the loq should therefore be derived at x = 7.3 instead</span>
-<span class='co'># of 15, but the graphical procedure of Massart (p. 201) to derive the </span>
-<span class='co'># variances on which the weights are based is quite inaccurate anyway. </span>
-</div></pre>
+ <div id="ref-examples">
+ <h2>Examples</h2>
+ <div class="sourceCode"><pre class="sourceCode r"><code><span class="r-in"><span class="co"># For reproducing the results for replicate standard measurements in example 8,</span></span>
+<span class="r-in"><span class="co"># we need to do the calibration on the means when using chemCal &gt; 0.2</span></span>
+<span class="r-in"><span class="va">weights</span> <span class="op">&lt;-</span> <span class="fu"><a href="https://rdrr.io/r/base/with.html" class="external-link">with</a></span><span class="op">(</span><span class="va">massart97ex3</span>, <span class="op">{</span></span>
+<span class="r-in"> <span class="va">yx</span> <span class="op">&lt;-</span> <span class="fu"><a href="https://rdrr.io/r/base/split.html" class="external-link">split</a></span><span class="op">(</span><span class="va">y</span>, <span class="va">x</span><span class="op">)</span></span>
+<span class="r-in"> <span class="va">ybar</span> <span class="op">&lt;-</span> <span class="fu"><a href="https://rdrr.io/r/base/lapply.html" class="external-link">sapply</a></span><span class="op">(</span><span class="va">yx</span>, <span class="va">mean</span><span class="op">)</span></span>
+<span class="r-in"> <span class="va">s</span> <span class="op">&lt;-</span> <span class="fu"><a href="https://rdrr.io/r/base/Round.html" class="external-link">round</a></span><span class="op">(</span><span class="fu"><a href="https://rdrr.io/r/base/lapply.html" class="external-link">sapply</a></span><span class="op">(</span><span class="va">yx</span>, <span class="va">sd</span><span class="op">)</span>, digits <span class="op">=</span> <span class="fl">2</span><span class="op">)</span></span>
+<span class="r-in"> <span class="va">w</span> <span class="op">&lt;-</span> <span class="fu"><a href="https://rdrr.io/r/base/Round.html" class="external-link">round</a></span><span class="op">(</span><span class="fl">1</span> <span class="op">/</span> <span class="op">(</span><span class="va">s</span><span class="op">^</span><span class="fl">2</span><span class="op">)</span>, digits <span class="op">=</span> <span class="fl">3</span><span class="op">)</span></span>
+<span class="r-in"><span class="op">}</span><span class="op">)</span></span>
+<span class="r-in"></span>
+<span class="r-in"><span class="va">massart97ex3.means</span> <span class="op">&lt;-</span> <span class="fu"><a href="https://rdrr.io/r/stats/aggregate.html" class="external-link">aggregate</a></span><span class="op">(</span><span class="va">y</span> <span class="op">~</span> <span class="va">x</span>, <span class="va">massart97ex3</span>, <span class="va">mean</span><span class="op">)</span></span>
+<span class="r-in"></span>
+<span class="r-in"><span class="va">m3.means</span> <span class="op">&lt;-</span> <span class="fu"><a href="https://rdrr.io/r/stats/lm.html" class="external-link">lm</a></span><span class="op">(</span><span class="va">y</span> <span class="op">~</span> <span class="va">x</span>, w <span class="op">=</span> <span class="va">weights</span>, data <span class="op">=</span> <span class="va">massart97ex3.means</span><span class="op">)</span></span>
+<span class="r-in"></span>
+<span class="r-in"><span class="co"># The following concords with the book p. 200</span></span>
+<span class="r-in"><span class="fu"><a href="inverse.predict.html">inverse.predict</a></span><span class="op">(</span><span class="va">m3.means</span>, <span class="fl">15</span>, ws <span class="op">=</span> <span class="fl">1.67</span><span class="op">)</span> <span class="co"># 5.9 +- 2.5</span></span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> $Prediction</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> [1] 5.865367</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> $`Standard Error`</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> [1] 0.8926109</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> $Confidence</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> [1] 2.478285</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> $`Confidence Limits`</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> [1] 3.387082 8.343652</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
+<span class="r-in"><span class="fu"><a href="inverse.predict.html">inverse.predict</a></span><span class="op">(</span><span class="va">m3.means</span>, <span class="fl">90</span>, ws <span class="op">=</span> <span class="fl">0.145</span><span class="op">)</span> <span class="co"># 44.1 +- 7.9</span></span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> $Prediction</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> [1] 44.06025</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> $`Standard Error`</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> [1] 2.829162</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> $Confidence</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> [1] 7.855012</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> $`Confidence Limits`</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> [1] 36.20523 51.91526</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
+<span class="r-in"></span>
+<span class="r-in"><span class="co"># The LOD is only calculated for models from unweighted regression</span></span>
+<span class="r-in"><span class="co"># with this version of chemCal</span></span>
+<span class="r-in"><span class="va">m0</span> <span class="op">&lt;-</span> <span class="fu"><a href="https://rdrr.io/r/stats/lm.html" class="external-link">lm</a></span><span class="op">(</span><span class="va">y</span> <span class="op">~</span> <span class="va">x</span>, data <span class="op">=</span> <span class="va">massart97ex3</span><span class="op">)</span> </span>
+<span class="r-in"><span class="fu"><a href="lod.html">lod</a></span><span class="op">(</span><span class="va">m0</span><span class="op">)</span></span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> $x</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> [1] 5.407085</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> $y</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> [1] 13.63911</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
+<span class="r-in"></span>
+<span class="r-in"><span class="co"># Limit of quantification from unweighted regression</span></span>
+<span class="r-in"><span class="fu"><a href="loq.html">loq</a></span><span class="op">(</span><span class="va">m0</span><span class="op">)</span></span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> $x</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> [1] 9.627349</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> $y</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> [1] 22.00246</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
+<span class="r-in"></span>
+<span class="r-in"><span class="co"># For calculating the limit of quantification from a model from weighted</span></span>
+<span class="r-in"><span class="co"># regression, we need to supply weights, internally used for inverse.predict</span></span>
+<span class="r-in"><span class="co"># If we are not using a variance function, we can use the weight from</span></span>
+<span class="r-in"><span class="co"># the above example as a first approximation (x = 15 is close to our</span></span>
+<span class="r-in"><span class="co"># loq approx 14 from above).</span></span>
+<span class="r-in"><span class="fu"><a href="loq.html">loq</a></span><span class="op">(</span><span class="va">m3.means</span>, w.loq <span class="op">=</span> <span class="fl">1.67</span><span class="op">)</span></span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> $x</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> [1] 7.346195</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> $y</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> [1] 17.90777</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
+<span class="r-in"><span class="co"># The weight for the loq should therefore be derived at x = 7.3 instead</span></span>
+<span class="r-in"><span class="co"># of 15, but the graphical procedure of Massart (p. 201) to derive the </span></span>
+<span class="r-in"><span class="co"># variances on which the weights are based is quite inaccurate anyway. </span></span>
+</code></pre></div>
+ </div>
</div>
<div class="col-md-3 hidden-xs hidden-sm" id="pkgdown-sidebar">
- <nav id="toc" data-toggle="toc" class="sticky-top">
- <h2 data-toc-skip>Contents</h2>
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+ <nav id="toc" data-toggle="toc" class="sticky-top"><h2 data-toc-skip>Contents</h2>
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+ <footer><div class="copyright">
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diff --git a/docs/reference/rl95_cadmium.html b/docs/reference/rl95_cadmium.html
index 3b311ec..da9294d 100644
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+<!-- Generated by pkgdown: do not edit by hand --><html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="utf-8"><meta http-equiv="X-UA-Compatible" content="IE=edge"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>Cadmium concentrations measured by AAS as reported by Rocke and Lorenzato (1995) — rl95_cadmium • chemCal</title><!-- jquery --><script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.4.1/jquery.min.js" integrity="sha256-CSXorXvZcTkaix6Yvo6HppcZGetbYMGWSFlBw8HfCJo=" crossorigin="anonymous"></script><!-- Bootstrap --><link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.4.1/css/bootstrap.min.css" integrity="sha256-bZLfwXAP04zRMK2BjiO8iu9pf4FbLqX6zitd+tIvLhE=" crossorigin="anonymous"><script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.4.1/js/bootstrap.min.js" integrity="sha256-nuL8/2cJ5NDSSwnKD8VqreErSWHtnEP9E7AySL+1ev4=" crossorigin="anonymous"></script><!-- bootstrap-toc --><link rel="stylesheet" href="../bootstrap-toc.css"><script src="../bootstrap-toc.js"></script><!-- Font Awesome icons --><link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.12.1/css/all.min.css" integrity="sha256-mmgLkCYLUQbXn0B1SRqzHar6dCnv9oZFPEC1g1cwlkk=" crossorigin="anonymous"><link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.12.1/css/v4-shims.min.css" integrity="sha256-wZjR52fzng1pJHwx4aV2AO3yyTOXrcDW7jBpJtTwVxw=" crossorigin="anonymous"><!-- clipboard.js --><script src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.6/clipboard.min.js" integrity="sha256-inc5kl9MA1hkeYUt+EC3BhlIgyp/2jDIyBLS6k3UxPI=" crossorigin="anonymous"></script><!-- headroom.js --><script src="https://cdnjs.cloudflare.com/ajax/libs/headroom/0.11.0/headroom.min.js" integrity="sha256-AsUX4SJE1+yuDu5+mAVzJbuYNPHj/WroHuZ8Ir/CkE0=" crossorigin="anonymous"></script><script src="https://cdnjs.cloudflare.com/ajax/libs/headroom/0.11.0/jQuery.headroom.min.js" integrity="sha256-ZX/yNShbjqsohH1k95liqY9Gd8uOiE1S4vZc+9KQ1K4=" crossorigin="anonymous"></script><!-- pkgdown --><link href="../pkgdown.css" rel="stylesheet"><script src="../pkgdown.js"></script><meta property="og:title" content="Cadmium concentrations measured by AAS as reported by Rocke and Lorenzato (1995) — rl95_cadmium"><meta property="og:description" content="Dataset reproduced from Table 1 in Rocke and Lorenzato (1995)."><!-- mathjax --><script src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/MathJax.js" integrity="sha256-nvJJv9wWKEm88qvoQl9ekL2J+k/RWIsaSScxxlsrv8k=" crossorigin="anonymous"></script><script src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/config/TeX-AMS-MML_HTMLorMML.js" integrity="sha256-84DKXVJXs0/F8OTMzX4UR909+jtl4G7SPypPavF+GfA=" crossorigin="anonymous"></script><!--[if lt IE 9]>
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-<![endif]-->
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+<![endif]--></head><body data-spy="scroll" data-target="#toc">
+
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@@ -72,19 +17,12 @@
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<a class="navbar-link" href="../index.html">chemCal</a>
- <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="Released version">0.2.2</span>
+ <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.2.3</span>
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+ <ul class="nav navbar-nav"><li>
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@@ -93,25 +31,19 @@
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- <li>
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<h1>Cadmium concentrations measured by AAS as reported by Rocke and Lorenzato (1995)</h1>
@@ -124,41 +56,38 @@
</div>
-
- <h2 class="hasAnchor" id="format"><a class="anchor" href="#format"></a>Format</h2>
-
+ <div id="format">
+ <h2>Format</h2>
<p>A dataframe containing four replicate observations for each
of the six calibration standards.</p>
- <h2 class="hasAnchor" id="source"><a class="anchor" href="#source"></a>Source</h2>
-
+ </div>
+ <div id="source">
+ <h2>Source</h2>
<p>Rocke, David M. und Lorenzato, Stefan (1995) A two-component model for
measurement error in analytical chemistry. Technometrics 37(2), 176-184.</p>
+ </div>
</div>
<div class="col-md-3 hidden-xs hidden-sm" id="pkgdown-sidebar">
- <nav id="toc" data-toggle="toc" class="sticky-top">
- <h2 data-toc-skip>Contents</h2>
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+ <nav id="toc" data-toggle="toc" class="sticky-top"><h2 data-toc-skip>Contents</h2>
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- <footer>
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- <p>Developed by Johannes Ranke.</p>
+ <footer><div class="copyright">
+ <p></p><p>Developed by Johannes Ranke.</p>
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- <p>Site built with <a href="https://pkgdown.r-lib.org/">pkgdown</a> 1.6.1.</p>
+ <p></p><p>Site built with <a href="https://pkgdown.r-lib.org/" class="external-link">pkgdown</a> 2.0.2.</p>
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diff --git a/docs/reference/rl95_toluene.html b/docs/reference/rl95_toluene.html
index 6b2542b..fb071e1 100644
--- a/docs/reference/rl95_toluene.html
+++ b/docs/reference/rl95_toluene.html
@@ -1,69 +1,14 @@
-<!-- Generated by pkgdown: do not edit by hand -->
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-<meta http-equiv="X-UA-Compatible" content="IE=edge">
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-
-
-<!-- jquery -->
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-<meta property="og:description" content="Dataset reproduced from Table 4 in Rocke and Lorenzato (1995). The toluene
+<!-- Generated by pkgdown: do not edit by hand --><html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="utf-8"><meta http-equiv="X-UA-Compatible" content="IE=edge"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>Toluene amounts measured by GC/MS as reported by Rocke and Lorenzato (1995) — rl95_toluene • chemCal</title><!-- jquery --><script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.4.1/jquery.min.js" integrity="sha256-CSXorXvZcTkaix6Yvo6HppcZGetbYMGWSFlBw8HfCJo=" crossorigin="anonymous"></script><!-- Bootstrap --><link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.4.1/css/bootstrap.min.css" integrity="sha256-bZLfwXAP04zRMK2BjiO8iu9pf4FbLqX6zitd+tIvLhE=" crossorigin="anonymous"><script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.4.1/js/bootstrap.min.js" integrity="sha256-nuL8/2cJ5NDSSwnKD8VqreErSWHtnEP9E7AySL+1ev4=" crossorigin="anonymous"></script><!-- bootstrap-toc --><link rel="stylesheet" href="../bootstrap-toc.css"><script src="../bootstrap-toc.js"></script><!-- Font Awesome icons --><link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.12.1/css/all.min.css" integrity="sha256-mmgLkCYLUQbXn0B1SRqzHar6dCnv9oZFPEC1g1cwlkk=" crossorigin="anonymous"><link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.12.1/css/v4-shims.min.css" integrity="sha256-wZjR52fzng1pJHwx4aV2AO3yyTOXrcDW7jBpJtTwVxw=" crossorigin="anonymous"><!-- clipboard.js --><script src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.6/clipboard.min.js" integrity="sha256-inc5kl9MA1hkeYUt+EC3BhlIgyp/2jDIyBLS6k3UxPI=" crossorigin="anonymous"></script><!-- headroom.js --><script src="https://cdnjs.cloudflare.com/ajax/libs/headroom/0.11.0/headroom.min.js" integrity="sha256-AsUX4SJE1+yuDu5+mAVzJbuYNPHj/WroHuZ8Ir/CkE0=" crossorigin="anonymous"></script><script src="https://cdnjs.cloudflare.com/ajax/libs/headroom/0.11.0/jQuery.headroom.min.js" integrity="sha256-ZX/yNShbjqsohH1k95liqY9Gd8uOiE1S4vZc+9KQ1K4=" crossorigin="anonymous"></script><!-- pkgdown --><link href="../pkgdown.css" rel="stylesheet"><script src="../pkgdown.js"></script><meta property="og:title" content="Toluene amounts measured by GC/MS as reported by Rocke and Lorenzato (1995) — rl95_toluene"><meta property="og:description" content="Dataset reproduced from Table 4 in Rocke and Lorenzato (1995). The toluene
amount in the calibration samples is given in picograms per 100 µL.
- Presumably this is the volume that was injected into the instrument." />
-
-
-
-
-<!-- mathjax -->
-<script src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/MathJax.js" integrity="sha256-nvJJv9wWKEm88qvoQl9ekL2J+k/RWIsaSScxxlsrv8k=" crossorigin="anonymous"></script>
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-
-<!--[if lt IE 9]>
+ Presumably this is the volume that was injected into the instrument."><!-- mathjax --><script src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/MathJax.js" integrity="sha256-nvJJv9wWKEm88qvoQl9ekL2J+k/RWIsaSScxxlsrv8k=" crossorigin="anonymous"></script><script src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/config/TeX-AMS-MML_HTMLorMML.js" integrity="sha256-84DKXVJXs0/F8OTMzX4UR909+jtl4G7SPypPavF+GfA=" crossorigin="anonymous"></script><!--[if lt IE 9]>
<script src="https://oss.maxcdn.com/html5shiv/3.7.3/html5shiv.min.js"></script>
<script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script>
-<![endif]-->
-
-
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+<![endif]--></head><body data-spy="scroll" data-target="#toc">
+
- <body data-spy="scroll" data-target="#toc">
<div class="container template-reference-topic">
- <header>
- <div class="navbar navbar-default navbar-fixed-top" role="navigation">
+ <header><div class="navbar navbar-default navbar-fixed-top" role="navigation">
<div class="container">
<div class="navbar-header">
<button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar" aria-expanded="false">
@@ -74,19 +19,12 @@
</button>
<span class="navbar-brand">
<a class="navbar-link" href="../index.html">chemCal</a>
- <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="Released version">0.2.2</span>
+ <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.2.3</span>
</span>
</div>
<div id="navbar" class="navbar-collapse collapse">
- <ul class="nav navbar-nav">
- <li>
- <a href="../index.html">
- <span class="fas fa-home fa-lg"></span>
-
- </a>
-</li>
-<li>
+ <ul class="nav navbar-nav"><li>
<a href="../articles/chemCal.html">Get started</a>
</li>
<li>
@@ -95,25 +33,19 @@
<li>
<a href="../news/index.html">Changelog</a>
</li>
- </ul>
- <ul class="nav navbar-nav navbar-right">
- <li>
- <a href="https://github.com/jranke/chemCal/">
+ </ul><ul class="nav navbar-nav navbar-right"><li>
+ <a href="https://github.com/jranke/chemCal/" class="external-link">
<span class="fab fa-github fa-lg"></span>
</a>
</li>
- </ul>
-
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+ </ul></div><!--/.nav-collapse -->
</div><!--/.container -->
</div><!--/.navbar -->
- </header>
-
-<div class="row">
+ </header><div class="row">
<div class="col-md-9 contents">
<div class="page-header">
<h1>Toluene amounts measured by GC/MS as reported by Rocke and Lorenzato (1995)</h1>
@@ -128,41 +60,38 @@
</div>
-
- <h2 class="hasAnchor" id="format"><a class="anchor" href="#format"></a>Format</h2>
-
+ <div id="format">
+ <h2>Format</h2>
<p>A dataframe containing four replicate observations for each
of the six calibration standards.</p>
- <h2 class="hasAnchor" id="source"><a class="anchor" href="#source"></a>Source</h2>
-
+ </div>
+ <div id="source">
+ <h2>Source</h2>
<p>Rocke, David M. und Lorenzato, Stefan (1995) A two-component model for
measurement error in analytical chemistry. Technometrics 37(2), 176-184.</p>
+ </div>
</div>
<div class="col-md-3 hidden-xs hidden-sm" id="pkgdown-sidebar">
- <nav id="toc" data-toggle="toc" class="sticky-top">
- <h2 data-toc-skip>Contents</h2>
- </nav>
- </div>
+ <nav id="toc" data-toggle="toc" class="sticky-top"><h2 data-toc-skip>Contents</h2>
+ </nav></div>
</div>
- <footer>
- <div class="copyright">
- <p>Developed by Johannes Ranke.</p>
+ <footer><div class="copyright">
+ <p></p><p>Developed by Johannes Ranke.</p>
</div>
<div class="pkgdown">
- <p>Site built with <a href="https://pkgdown.r-lib.org/">pkgdown</a> 1.6.1.</p>
+ <p></p><p>Site built with <a href="https://pkgdown.r-lib.org/" class="external-link">pkgdown</a> 2.0.2.</p>
</div>
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+ </footer></div>
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-</html>
+
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diff --git a/docs/reference/utstats14.html b/docs/reference/utstats14.html
index a2822fc..78d2604 100644
--- a/docs/reference/utstats14.html
+++ b/docs/reference/utstats14.html
@@ -1,68 +1,13 @@
-<!-- Generated by pkgdown: do not edit by hand -->
<!DOCTYPE html>
-<html lang="en">
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- <meta charset="utf-8">
-<meta http-equiv="X-UA-Compatible" content="IE=edge">
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-
-
-<!-- jquery -->
-<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.4.1/jquery.min.js" integrity="sha256-CSXorXvZcTkaix6Yvo6HppcZGetbYMGWSFlBw8HfCJo=" crossorigin="anonymous"></script>
-<!-- Bootstrap -->
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-
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-<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.12.1/css/v4-shims.min.css" integrity="sha256-wZjR52fzng1pJHwx4aV2AO3yyTOXrcDW7jBpJtTwVxw=" crossorigin="anonymous" />
-
-<!-- clipboard.js -->
-<script src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.6/clipboard.min.js" integrity="sha256-inc5kl9MA1hkeYUt+EC3BhlIgyp/2jDIyBLS6k3UxPI=" crossorigin="anonymous"></script>
-
-<!-- headroom.js -->
-<script src="https://cdnjs.cloudflare.com/ajax/libs/headroom/0.11.0/headroom.min.js" integrity="sha256-AsUX4SJE1+yuDu5+mAVzJbuYNPHj/WroHuZ8Ir/CkE0=" crossorigin="anonymous"></script>
-<script src="https://cdnjs.cloudflare.com/ajax/libs/headroom/0.11.0/jQuery.headroom.min.js" integrity="sha256-ZX/yNShbjqsohH1k95liqY9Gd8uOiE1S4vZc+9KQ1K4=" crossorigin="anonymous"></script>
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-<meta property="og:title" content="Example data for calibration with replicates from University of Toronto — utstats14" />
-<meta property="og:description" content="Dataset read into R from
- https://sites.chem.utoronto.ca/chemistry/coursenotes/analsci/stats/files/example14.xls." />
-
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-<!-- mathjax -->
-<script src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/MathJax.js" integrity="sha256-nvJJv9wWKEm88qvoQl9ekL2J+k/RWIsaSScxxlsrv8k=" crossorigin="anonymous"></script>
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-
-<!--[if lt IE 9]>
+<!-- Generated by pkgdown: do not edit by hand --><html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="utf-8"><meta http-equiv="X-UA-Compatible" content="IE=edge"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>Example data for calibration with replicates from University of Toronto — utstats14 • chemCal</title><!-- jquery --><script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.4.1/jquery.min.js" integrity="sha256-CSXorXvZcTkaix6Yvo6HppcZGetbYMGWSFlBw8HfCJo=" crossorigin="anonymous"></script><!-- Bootstrap --><link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.4.1/css/bootstrap.min.css" integrity="sha256-bZLfwXAP04zRMK2BjiO8iu9pf4FbLqX6zitd+tIvLhE=" crossorigin="anonymous"><script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.4.1/js/bootstrap.min.js" integrity="sha256-nuL8/2cJ5NDSSwnKD8VqreErSWHtnEP9E7AySL+1ev4=" crossorigin="anonymous"></script><!-- bootstrap-toc --><link rel="stylesheet" href="../bootstrap-toc.css"><script src="../bootstrap-toc.js"></script><!-- Font Awesome icons --><link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.12.1/css/all.min.css" integrity="sha256-mmgLkCYLUQbXn0B1SRqzHar6dCnv9oZFPEC1g1cwlkk=" crossorigin="anonymous"><link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.12.1/css/v4-shims.min.css" integrity="sha256-wZjR52fzng1pJHwx4aV2AO3yyTOXrcDW7jBpJtTwVxw=" crossorigin="anonymous"><!-- clipboard.js --><script src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.6/clipboard.min.js" integrity="sha256-inc5kl9MA1hkeYUt+EC3BhlIgyp/2jDIyBLS6k3UxPI=" crossorigin="anonymous"></script><!-- headroom.js --><script src="https://cdnjs.cloudflare.com/ajax/libs/headroom/0.11.0/headroom.min.js" integrity="sha256-AsUX4SJE1+yuDu5+mAVzJbuYNPHj/WroHuZ8Ir/CkE0=" crossorigin="anonymous"></script><script src="https://cdnjs.cloudflare.com/ajax/libs/headroom/0.11.0/jQuery.headroom.min.js" integrity="sha256-ZX/yNShbjqsohH1k95liqY9Gd8uOiE1S4vZc+9KQ1K4=" crossorigin="anonymous"></script><!-- pkgdown --><link href="../pkgdown.css" rel="stylesheet"><script src="../pkgdown.js"></script><meta property="og:title" content="Example data for calibration with replicates from University of Toronto — utstats14"><meta property="og:description" content="Dataset read into R from
+ https://sites.chem.utoronto.ca/chemistry/coursenotes/analsci/stats/files/example14.xls."><!-- mathjax --><script src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/MathJax.js" integrity="sha256-nvJJv9wWKEm88qvoQl9ekL2J+k/RWIsaSScxxlsrv8k=" crossorigin="anonymous"></script><script src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/config/TeX-AMS-MML_HTMLorMML.js" integrity="sha256-84DKXVJXs0/F8OTMzX4UR909+jtl4G7SPypPavF+GfA=" crossorigin="anonymous"></script><!--[if lt IE 9]>
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<script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script>
-<![endif]-->
-
-
-
- </head>
+<![endif]--></head><body data-spy="scroll" data-target="#toc">
+
- <body data-spy="scroll" data-target="#toc">
<div class="container template-reference-topic">
- <header>
- <div class="navbar navbar-default navbar-fixed-top" role="navigation">
+ <header><div class="navbar navbar-default navbar-fixed-top" role="navigation">
<div class="container">
<div class="navbar-header">
<button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar" aria-expanded="false">
@@ -73,19 +18,12 @@
</button>
<span class="navbar-brand">
<a class="navbar-link" href="../index.html">chemCal</a>
- <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="Released version">0.2.2</span>
+ <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.2.3</span>
</span>
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<div id="navbar" class="navbar-collapse collapse">
- <ul class="nav navbar-nav">
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- <span class="fas fa-home fa-lg"></span>
-
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-</li>
-<li>
+ <ul class="nav navbar-nav"><li>
<a href="../articles/chemCal.html">Get started</a>
</li>
<li>
@@ -94,25 +32,19 @@
<li>
<a href="../news/index.html">Changelog</a>
</li>
- </ul>
- <ul class="nav navbar-nav navbar-right">
- <li>
- <a href="https://github.com/jranke/chemCal/">
+ </ul><ul class="nav navbar-nav navbar-right"><li>
+ <a href="https://github.com/jranke/chemCal/" class="external-link">
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+ </ul></div><!--/.nav-collapse -->
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-<div class="row">
+ </header><div class="row">
<div class="col-md-9 contents">
<div class="page-header">
<h1>Example data for calibration with replicates from University of Toronto</h1>
@@ -122,46 +54,43 @@
<div class="ref-description">
<p>Dataset read into R from
- <a href='https://sites.chem.utoronto.ca/chemistry/coursenotes/analsci/stats/files/example14.xls'>https://sites.chem.utoronto.ca/chemistry/coursenotes/analsci/stats/files/example14.xls</a>.</p>
+ <a href="https://sites.chem.utoronto.ca/chemistry/coursenotes/analsci/stats/files/example14.xls" class="external-link">https://sites.chem.utoronto.ca/chemistry/coursenotes/analsci/stats/files/example14.xls</a>.</p>
</div>
-
- <h2 class="hasAnchor" id="format"><a class="anchor" href="#format"></a>Format</h2>
-
+ <div id="format">
+ <h2>Format</h2>
<p>A tibble containing three replicate observations of the response for five
calibration concentrations.</p>
- <h2 class="hasAnchor" id="source"><a class="anchor" href="#source"></a>Source</h2>
-
+ </div>
+ <div id="source">
+ <h2>Source</h2>
<p>David Stone and Jon Ellis (2011) Statistics in Analytical Chemistry. Tutorial website
maintained by the Departments of Chemistry, University of Toronto.
- <a href='https://sites.chem.utoronto.ca/chemistry/coursenotes/analsci/stats/index.html'>https://sites.chem.utoronto.ca/chemistry/coursenotes/analsci/stats/index.html</a></p>
+ <a href="https://sites.chem.utoronto.ca/chemistry/coursenotes/analsci/stats/index.html" class="external-link">https://sites.chem.utoronto.ca/chemistry/coursenotes/analsci/stats/index.html</a></p>
+ </div>
</div>
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- <nav id="toc" data-toggle="toc" class="sticky-top">
- <h2 data-toc-skip>Contents</h2>
- </nav>
- </div>
+ <nav id="toc" data-toggle="toc" class="sticky-top"><h2 data-toc-skip>Contents</h2>
+ </nav></div>
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- <footer>
- <div class="copyright">
- <p>Developed by Johannes Ranke.</p>
+ <footer><div class="copyright">
+ <p></p><p>Developed by Johannes Ranke.</p>
</div>
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- <p>Site built with <a href="https://pkgdown.r-lib.org/">pkgdown</a> 1.6.1.</p>
+ <p></p><p>Site built with <a href="https://pkgdown.r-lib.org/" class="external-link">pkgdown</a> 2.0.2.</p>
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+
+ </body></html>

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