Static documentation rebuilt by pkgdown::build_site()

13 files changed, 475 insertions, 382 deletions

diff --git a/docs/reference/calplot.lm-1.png b/docs/reference/calplot.lm-1.png
index aa0286d..4d620ee 100644
--- a/docs/reference/calplot.lm-1.png
+++ b/docs/reference/calplot.lm-1.png
diff --git a/docs/reference/calplot.lm.html b/docs/reference/calplot.lm.html
index 18ce82f..7822b7e 100644
--- a/docs/reference/calplot.lm.html
+++ b/docs/reference/calplot.lm.html
@@ -8,21 +8,29 @@
 
 <title>Plot calibration graphs from univariate linear models — calplot • chemCal</title>
 
+
 <!-- jquery -->
-<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js" integrity="sha256-FgpCb/KJQlLNfOu91ta32o/NMZxltwRo8QtmkMRdAu8=" crossorigin="anonymous"></script>
+<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.4.1/jquery.min.js" integrity="sha256-CSXorXvZcTkaix6Yvo6HppcZGetbYMGWSFlBw8HfCJo=" crossorigin="anonymous"></script>
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-<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha256-916EbMg70RQy9LHiGkXzG8hSg9EdNy97GazNG/aiY1w=" crossorigin="anonymous" />
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+<script src="../bootstrap-toc.js"></script>
 
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 <!-- pkgdown -->
 <link href="../pkgdown.css" rel="stylesheet">
@@ -30,11 +38,11 @@
 
 
 
-<meta property="og:title" content="Plot calibration graphs from univariate linear models — calplot" />
 
+<meta property="og:title" content="Plot calibration graphs from univariate linear models — calplot" />
 <meta property="og:description" content="Produce graphics of calibration data, the fitted model as well
   as confidence, and, for unweighted regression, prediction bands." />
-<meta name="twitter:card" content="summary" />
+
 
 
 
@@ -48,9 +56,10 @@
 <![endif]-->
 
 
+
   </head>
 
-  <body>
+  <body data-spy="scroll" data-target="#toc">
     <div class="container template-reference-topic">
       <header>
       <div class="navbar navbar-default navbar-fixed-top" role="navigation">
@@ -72,7 +81,7 @@
       <ul class="nav navbar-nav">
         <li>
   <a href="../index.html">
-    <span class="fa fa-home fa-lg"></span>
+    <span class="fas fa fas fa-home fa-lg"></span>
      
   </a>
 </li>
@@ -86,9 +95,13 @@
   <a href="../news/index.html">Changelog</a>
 </li>
       </ul>
-      
       <ul class="nav navbar-nav navbar-right">
-        
+        <li>
+  <a href="http://github.com/jranke/chemCal/">
+    <span class="fab fa fab fa-github fa-lg"></span>
+     
+  </a>
+</li>
       </ul>
       
     </div><!--/.nav-collapse -->
@@ -96,6 +109,7 @@
 </div><!--/.navbar -->
 
       
+
       </header>
 
 <div class="row">
@@ -107,22 +121,20 @@
     </div>
 
     <div class="ref-description">
-    
     <p>Produce graphics of calibration data, the fitted model as well
   as confidence, and, for unweighted regression, prediction bands.</p>
-    
     </div>
 
-    <pre class="usage"><span class='fu'>calplot</span>(<span class='no'>object</span>, <span class='kw'>xlim</span> <span class='kw'>=</span> <span class='fu'><a href='https://www.rdocumentation.org/packages/base/topics/c'>c</a></span>(<span class='st'>"auto"</span>, <span class='st'>"auto"</span>), <span class='kw'>ylim</span> <span class='kw'>=</span> <span class='fu'><a href='https://www.rdocumentation.org/packages/base/topics/c'>c</a></span>(<span class='st'>"auto"</span>, <span class='st'>"auto"</span>),
+    <pre class="usage"><span class='fu'>calplot</span>(<span class='no'>object</span>, <span class='kw'>xlim</span> <span class='kw'>=</span> <span class='fu'><a href='https://rdrr.io/r/base/c.html'>c</a></span>(<span class='st'>"auto"</span>, <span class='st'>"auto"</span>), <span class='kw'>ylim</span> <span class='kw'>=</span> <span class='fu'><a href='https://rdrr.io/r/base/c.html'>c</a></span>(<span class='st'>"auto"</span>, <span class='st'>"auto"</span>),
     <span class='kw'>xlab</span> <span class='kw'>=</span> <span class='st'>"Concentration"</span>, <span class='kw'>ylab</span> <span class='kw'>=</span> <span class='st'>"Response"</span>, <span class='kw'>alpha</span><span class='kw'>=</span><span class='fl'>0.05</span>, <span class='kw'>varfunc</span> <span class='kw'>=</span> <span class='kw'>NULL</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://www.rdocumentation.org/packages/stats/topics/lm'>lm</a></code> or 
-    <code><a href='https://www.rdocumentation.org/packages/MASS/topics/rlm'>rlm</a></code> 
+      <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>
@@ -153,61 +165,52 @@
     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>
 
     <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>
 
     <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://www.rdocumentation.org/packages/stats/topics/predict.lm'>predict.lm</a></code>, therefore,
+  the internally used function <code><a href='https://rdrr.io/r/stats/predict.lm.html'>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
   half the value of the <code>calplot()</code> alpha parameter.</p>
-    
 
     <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://www.rdocumentation.org/packages/utils/topics/data'>data</a></span>(<span class='no'>massart97ex3</span>)
-<span class='no'>m</span> <span class='kw'>&lt;-</span> <span class='fu'><a href='https://www.rdocumentation.org/packages/stats/topics/lm'>lm</a></span>(<span class='no'>y</span> ~ <span class='no'>x</span>, <span class='kw'>data</span> <span class='kw'>=</span> <span class='no'>massart97ex3</span>)
+    <pre class="examples"><div class='input'><span class='fu'><a href='https://rdrr.io/r/utils/data.html'>data</a></span>(<span class='no'>massart97ex3</span>)
+<span class='no'>m</span> <span class='kw'>&lt;-</span> <span class='fu'><a href='https://rdrr.io/r/stats/lm.html'>lm</a></span>(<span class='no'>y</span> ~ <span class='no'>x</span>, <span class='kw'>data</span> <span class='kw'>=</span> <span class='no'>massart97ex3</span>)
 <span class='fu'>calplot</span>(<span class='no'>m</span>)</div><div class='img'><img src='calplot.lm-1.png' alt='' width='700' height='433' /></div></pre>
   </div>
-  <div class="col-md-3 hidden-xs hidden-sm" id="sidebar">
-    <h2>Contents</h2>
-    <ul class="nav nav-pills nav-stacked">
-      <li><a href="#arguments">Arguments</a></li>
-      
-      <li><a href="#value">Value</a></li>
-
-      <li><a href="#note">Note</a></li>
-      
-      <li><a href="#examples">Examples</a></li>
-    </ul>
-
-    <h2>Author</h2>
-    <p>Johannes Ranke 
-  <a href='mailto:jranke@uni-bremen.de'>jranke@uni-bremen.de</a></p>
+  <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>
 </div>
 
+
       <footer>
       <div class="copyright">
   <p>Developed by Johannes Ranke.</p>
 </div>
 
 <div class="pkgdown">
-  <p>Site built with <a href="https://pkgdown.r-lib.org/">pkgdown</a> 1.3.0.</p>
+  <p>Site built with <a href="https://pkgdown.r-lib.org/">pkgdown</a> 1.5.1.</p>
 </div>
+
       </footer>
    </div>
 
   
 
+
   </body>
 </html>
 
+
diff --git a/docs/reference/din32645-1.png b/docs/reference/din32645-1.png
index 9dc7295..cee27e9 100644
--- a/docs/reference/din32645-1.png
+++ b/docs/reference/din32645-1.png
diff --git a/docs/reference/din32645.html b/docs/reference/din32645.html
index 8d46c24..6af5152 100644
--- a/docs/reference/din32645.html
+++ b/docs/reference/din32645.html
@@ -8,21 +8,29 @@
 
 <title>Calibration data from DIN 32645 — din32645 • chemCal</title>
 
+
 <!-- jquery -->
-<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js" integrity="sha256-FgpCb/KJQlLNfOu91ta32o/NMZxltwRo8QtmkMRdAu8=" crossorigin="anonymous"></script>
+<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/3.3.7/css/bootstrap.min.css" integrity="sha256-916EbMg70RQy9LHiGkXzG8hSg9EdNy97GazNG/aiY1w=" crossorigin="anonymous" />
-<script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/js/bootstrap.min.js" integrity="sha256-U5ZEeKfGNOja007MMD3YBI0A3OSZOQbeG6z2f2Y0hu8=" crossorigin="anonymous"></script>
+<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/4.7.0/css/font-awesome.min.css" integrity="sha256-eZrrJcwDc/3uDhsdt61sL2oOBY362qM3lon1gyExkL0=" crossorigin="anonymous" />
+<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/2.0.4/clipboard.min.js" integrity="sha256-FiZwavyI2V6+EXO1U+xzLG3IKldpiTFf3153ea9zikQ=" crossorigin="anonymous"></script>
+<script src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.6/clipboard.min.js" integrity="sha256-inc5kl9MA1hkeYUt+EC3BhlIgyp/2jDIyBLS6k3UxPI=" crossorigin="anonymous"></script>
 
-<!-- sticky kit -->
-<script src="https://cdnjs.cloudflare.com/ajax/libs/sticky-kit/1.1.3/sticky-kit.min.js" integrity="sha256-c4Rlo1ZozqTPE2RLuvbusY3+SU1pQaJC0TjuhygMipw=" 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">
@@ -30,10 +38,10 @@
 
 
 
-<meta property="og:title" content="Calibration data from DIN 32645 — din32645" />
 
+<meta property="og:title" content="Calibration data from DIN 32645 — din32645" />
 <meta property="og:description" content="Sample dataset to test the package." />
-<meta name="twitter:card" content="summary" />
+
 
 
 
@@ -47,9 +55,10 @@
 <![endif]-->
 
 
+
   </head>
 
-  <body>
+  <body data-spy="scroll" data-target="#toc">
     <div class="container template-reference-topic">
       <header>
       <div class="navbar navbar-default navbar-fixed-top" role="navigation">
@@ -71,7 +80,7 @@
       <ul class="nav navbar-nav">
         <li>
   <a href="../index.html">
-    <span class="fa fa-home fa-lg"></span>
+    <span class="fas fa fas fa-home fa-lg"></span>
      
   </a>
 </li>
@@ -85,9 +94,13 @@
   <a href="../news/index.html">Changelog</a>
 </li>
       </ul>
-      
       <ul class="nav navbar-nav navbar-right">
-        
+        <li>
+  <a href="http://github.com/jranke/chemCal/">
+    <span class="fab fa fab fa-github fa-lg"></span>
+     
+  </a>
+</li>
       </ul>
       
     </div><!--/.nav-collapse -->
@@ -95,6 +108,7 @@
 </div><!--/.navbar -->
 
       
+
       </header>
 
 <div class="row">
@@ -106,17 +120,15 @@
     </div>
 
     <div class="ref-description">
-    
     <p>Sample dataset to test the package.</p>
-    
     </div>
 
-    <pre class="usage"><span class='fu'><a href='https://www.rdocumentation.org/packages/utils/topics/data'>data</a></span>(<span class='no'>din32645</span>)</pre>
-        
+    <pre class="usage"><span class='fu'><a href='https://rdrr.io/r/utils/data.html'>data</a></span>(<span class='no'>din32645</span>)</pre>
+
+
     <h2 class="hasAnchor" id="format"><a class="anchor" href="#format"></a>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>
 
     <p>DIN 32645 (equivalent to ISO 11843), Beuth Verlag, Berlin, 1994</p>
@@ -126,66 +138,62 @@
 <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="examples"><a class="anchor" href="#examples"></a>Examples</h2>
-    <pre class="examples"><div class='input'><span class='no'>m</span> <span class='kw'>&lt;-</span> <span class='fu'><a href='https://www.rdocumentation.org/packages/stats/topics/lm'>lm</a></span>(<span class='no'>y</span> ~ <span class='no'>x</span>, <span class='kw'>data</span> <span class='kw'>=</span> <span class='no'>din32645</span>)
+    <pre class="examples"><div class='input'><span class='no'>m</span> <span class='kw'>&lt;-</span> <span class='fu'><a href='https://rdrr.io/r/stats/lm.html'>lm</a></span>(<span class='no'>y</span> ~ <span class='no'>x</span>, <span class='kw'>data</span> <span class='kw'>=</span> <span class='no'>din32645</span>)
 <span class='fu'><a href='calplot.lm.html'>calplot</a></span>(<span class='no'>m</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='no'>prediction</span> <span class='kw'>&lt;-</span> <span class='fu'><a href='inverse.predict.html'>inverse.predict</a></span>(<span class='no'>m</span>, <span class='fl'>3500</span>, <span class='kw'>alpha</span> <span class='kw'>=</span> <span class='fl'>0.01</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://www.rdocumentation.org/packages/base/topics/Round'>round</a></span>(<span class='no'>prediction</span>$<span class='no'>Confidence</span>, <span class='fl'>5</span>)</div><div class='output co'>#&gt; [1] 0.07434</div><div class='input'>
+<span class='fu'><a href='https://rdrr.io/r/base/Round.html'>round</a></span>(<span class='no'>prediction</span>$<span class='no'>Confidence</span>, <span class='fl'>5</span>)</div><div class='output co'>#&gt; [1] 0.07434</div><div class='input'>
 <span class='co'>## Critical value:</span>
 <span class='no'>crit</span> <span class='kw'>&lt;-</span> <span class='fu'><a href='lod.html'>lod</a></span>(<span class='no'>m</span>, <span class='kw'>alpha</span> <span class='kw'>=</span> <span class='fl'>0.01</span>, <span class='kw'>beta</span> <span class='kw'>=</span> <span class='fl'>0.5</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://www.rdocumentation.org/packages/base/topics/Round'>round</a></span>(<span class='no'>crit</span>$<span class='no'>x</span>, <span class='fl'>2</span>)</div><div class='output co'>#&gt; [1] 0.07</div><div class='input'><span class='co'># and according to Dintest test data, we should get 0.0698 from</span>
-<span class='fu'><a href='https://www.rdocumentation.org/packages/base/topics/Round'>round</a></span>(<span class='no'>crit</span>$<span class='no'>x</span>, <span class='fl'>4</span>)</div><div class='output co'>#&gt; [1] 0.0698</div><div class='input'>
+<span class='fu'><a href='https://rdrr.io/r/base/Round.html'>round</a></span>(<span class='no'>crit</span>$<span class='no'>x</span>, <span class='fl'>2</span>)</div><div class='output co'>#&gt; [1] 0.07</div><div class='input'><span class='co'># and according to Dintest test data, we should get 0.0698 from</span>
+<span class='fu'><a href='https://rdrr.io/r/base/Round.html'>round</a></span>(<span class='no'>crit</span>$<span class='no'>x</span>, <span class='fl'>4</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='no'>lod.din</span> <span class='kw'>&lt;-</span> <span class='fu'><a href='lod.html'>lod</a></span>(<span class='no'>m</span>, <span class='kw'>alpha</span> <span class='kw'>=</span> <span class='fl'>0.01</span>, <span class='kw'>beta</span> <span class='kw'>=</span> <span class='fl'>0.01</span>, <span class='kw'>method</span> <span class='kw'>=</span> <span class='st'>"din"</span>)
-<span class='fu'><a href='https://www.rdocumentation.org/packages/base/topics/Round'>round</a></span>(<span class='no'>lod.din</span>$<span class='no'>x</span>, <span class='fl'>2</span>)</div><div class='output co'>#&gt; [1] 0.14</div><div class='input'>
+<span class='fu'><a href='https://rdrr.io/r/base/Round.html'>round</a></span>(<span class='no'>lod.din</span>$<span class='no'>x</span>, <span class='fl'>2</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='no'>loq</span> <span class='kw'>&lt;-</span> <span class='fu'><a href='loq.html'>loq</a></span>(<span class='no'>m</span>, <span class='kw'>alpha</span> <span class='kw'>=</span> <span class='fl'>0.01</span>)
-<span class='fu'><a href='https://www.rdocumentation.org/packages/base/topics/Round'>round</a></span>(<span class='no'>loq</span>$<span class='no'>x</span>, <span class='fl'>4</span>)</div><div class='output co'>#&gt; [1] 0.212</div><div class='input'>
+<span class='fu'><a href='https://rdrr.io/r/base/Round.html'>round</a></span>(<span class='no'>loq</span>$<span class='no'>x</span>, <span class='fl'>4</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='fu'><a href='lod.html'>lod</a></span>(<span class='no'>m</span>, <span class='kw'>alpha</span> <span class='kw'>=</span> <span class='fl'>0.01</span>, <span class='kw'>beta</span> <span class='kw'>=</span> <span class='fl'>0.5</span>)$<span class='no'>x</span></div><div class='output co'>#&gt; [1] 0.2122306</div></pre>
   </div>
-  <div class="col-md-3 hidden-xs hidden-sm" id="sidebar">
-    <h2>Contents</h2>
-    <ul class="nav nav-pills nav-stacked">
-      
-      <li><a href="#format">Format</a></li>
-
-      <li><a href="#references">References</a></li>
-      
-      <li><a href="#examples">Examples</a></li>
-    </ul>
-
+  <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>
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       <div class="copyright">
   <p>Developed by Johannes Ranke.</p>
 </div>
 
 <div class="pkgdown">
-  <p>Site built with <a href="https://pkgdown.r-lib.org/">pkgdown</a> 1.3.0.</p>
+  <p>Site built with <a href="https://pkgdown.r-lib.org/">pkgdown</a> 1.5.1.</p>
 </div>
+
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+
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diff --git a/docs/reference/index.html b/docs/reference/index.html
index 0be3f99..d68dbd9 100644
--- a/docs/reference/index.html
+++ b/docs/reference/index.html
@@ -8,21 +8,29 @@
 
 <title>Function reference • chemCal</title>
 
+
 <!-- jquery -->
-<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js" integrity="sha256-FgpCb/KJQlLNfOu91ta32o/NMZxltwRo8QtmkMRdAu8=" crossorigin="anonymous"></script>
+<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.4.1/jquery.min.js" integrity="sha256-CSXorXvZcTkaix6Yvo6HppcZGetbYMGWSFlBw8HfCJo=" crossorigin="anonymous"></script>
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-<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha256-916EbMg70RQy9LHiGkXzG8hSg9EdNy97GazNG/aiY1w=" crossorigin="anonymous" />
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+
+<!-- bootstrap-toc -->
+<link rel="stylesheet" href="../bootstrap-toc.css">
+<script src="../bootstrap-toc.js"></script>
 
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-<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css" integrity="sha256-eZrrJcwDc/3uDhsdt61sL2oOBY362qM3lon1gyExkL0=" crossorigin="anonymous" />
+<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" />
 
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+<script src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.6/clipboard.min.js" integrity="sha256-inc5kl9MA1hkeYUt+EC3BhlIgyp/2jDIyBLS6k3UxPI=" crossorigin="anonymous"></script>
 
-<!-- sticky kit -->
-<script src="https://cdnjs.cloudflare.com/ajax/libs/sticky-kit/1.1.3/sticky-kit.min.js" integrity="sha256-c4Rlo1ZozqTPE2RLuvbusY3+SU1pQaJC0TjuhygMipw=" 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">
@@ -30,10 +38,12 @@
 
 
 
+
 <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>
@@ -44,9 +54,10 @@
 <![endif]-->
 
 
+
   </head>
 
-  <body>
+  <body data-spy="scroll" data-target="#toc">
     <div class="container template-reference-index">
       <header>
       <div class="navbar navbar-default navbar-fixed-top" role="navigation">
@@ -68,7 +79,7 @@
       <ul class="nav navbar-nav">
         <li>
   <a href="../index.html">
-    <span class="fa fa-home fa-lg"></span>
+    <span class="fas fa fas fa-home fa-lg"></span>
      
   </a>
 </li>
@@ -82,9 +93,13 @@
   <a href="../news/index.html">Changelog</a>
 </li>
       </ul>
-      
       <ul class="nav navbar-nav navbar-right">
-        
+        <li>
+  <a href="http://github.com/jranke/chemCal/">
+    <span class="fab fa fab fa-github fa-lg"></span>
+     
+  </a>
+</li>
       </ul>
       
     </div><!--/.nav-collapse -->
@@ -92,6 +107,7 @@
 </div><!--/.navbar -->
 
       
+
       </header>
 
 <div class="row">
@@ -115,6 +131,11 @@
           <p class="section-desc"></p>
         </th>
       </tr>
+      
+      
+    </tbody><tbody>
+      
+      
       <tr>
         
         <td>
@@ -180,27 +201,30 @@
     </table>
   </div>
 
-  <div class="col-md-3 hidden-xs hidden-sm" id="sidebar">
-    <h2>Contents</h2>
-    <ul class="nav nav-pills nav-stacked">
-      <li><a href="#section-all-functions">All functions</a></li>
-    </ul>
+  <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>
 </div>
 
+
       <footer>
       <div class="copyright">
   <p>Developed by Johannes Ranke.</p>
 </div>
 
 <div class="pkgdown">
-  <p>Site built with <a href="https://pkgdown.r-lib.org/">pkgdown</a> 1.3.0.</p>
+  <p>Site built with <a href="https://pkgdown.r-lib.org/">pkgdown</a> 1.5.1.</p>
 </div>
+
       </footer>
    </div>
 
   
 
+
   </body>
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+
diff --git a/docs/reference/inverse.predict.html b/docs/reference/inverse.predict.html
index 4ea9a75..3c4c867 100644
--- a/docs/reference/inverse.predict.html
+++ b/docs/reference/inverse.predict.html
@@ -8,21 +8,29 @@
 
 <title>Predict x from y for a linear calibration — inverse.predict • chemCal</title>
 
+
 <!-- jquery -->
-<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js" integrity="sha256-FgpCb/KJQlLNfOu91ta32o/NMZxltwRo8QtmkMRdAu8=" crossorigin="anonymous"></script>
+<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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+
+<!-- bootstrap-toc -->
+<link rel="stylesheet" href="../bootstrap-toc.css">
+<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/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" />
 
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+<script src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.6/clipboard.min.js" integrity="sha256-inc5kl9MA1hkeYUt+EC3BhlIgyp/2jDIyBLS6k3UxPI=" crossorigin="anonymous"></script>
 
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+<!-- 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">
@@ -30,8 +38,8 @@
 
 
 
-<meta property="og:title" content="Predict x from y for a linear calibration — inverse.predict" />
 
+<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.
@@ -42,7 +50,7 @@
   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." />
-<meta name="twitter:card" content="summary" />
+
 
 
 
@@ -56,9 +64,10 @@
 <![endif]-->
 
 
+
   </head>
 
-  <body>
+  <body data-spy="scroll" data-target="#toc">
     <div class="container template-reference-topic">
       <header>
       <div class="navbar navbar-default navbar-fixed-top" role="navigation">
@@ -80,7 +89,7 @@
       <ul class="nav navbar-nav">
         <li>
   <a href="../index.html">
-    <span class="fa fa-home fa-lg"></span>
+    <span class="fas fa fas fa-home fa-lg"></span>
      
   </a>
 </li>
@@ -94,9 +103,13 @@
   <a href="../news/index.html">Changelog</a>
 </li>
       </ul>
-      
       <ul class="nav navbar-nav navbar-right">
-        
+        <li>
+  <a href="http://github.com/jranke/chemCal/">
+    <span class="fab fa fab fa-github fa-lg"></span>
+     
+  </a>
+</li>
       </ul>
       
     </div><!--/.nav-collapse -->
@@ -104,6 +117,7 @@
 </div><!--/.navbar -->
 
       
+
       </header>
 
 <div class="row">
@@ -115,7 +129,6 @@
     </div>
 
     <div class="ref-description">
-    
     <p>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.
@@ -126,19 +139,18 @@
   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.</p>
-    
     </div>
 
-    <pre class="usage">inverse.predict(object, newdata, &#8230;,
-  ws, alpha=0.05, var.s = "auto")</pre>
-    
+    <pre class="usage"><span class='fu'>inverse.predict</span>(<span class='no'>object</span>, <span class='no'>newdata</span>, <span class='no'>...</span>,
+  <span class='no'>ws</span>, <span class='kw'>alpha</span><span class='kw'>=</span><span class='fl'>0.05</span>, <span class='kw'>var.s</span> <span class='kw'>=</span> <span class='st'>"auto"</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://www.rdocumentation.org/packages/stats/topics/lm'>lm</a></code> or 
-    <code><a href='https://www.rdocumentation.org/packages/MASS/topics/rlm'>rlm</a></code> 
+      <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>
@@ -146,7 +158,7 @@
       <td><p>A vector of observed y values for one sample.</p></td>
     </tr>
     <tr>
-      <th>&#8230;</th>
+      <th>...</th>
       <td><p>Placeholder for further arguments that might be needed by 
     future implementations.</p></td>
     </tr>
@@ -167,12 +179,11 @@
     overrides <code>ws</code>.</p></td>
     </tr>
     </table>
-    
+
     <h2 class="hasAnchor" id="value"><a class="anchor" href="#value"></a>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>
 
     <p>The function was validated with examples 7 and 8 from Massart et al. (1997). 
@@ -180,17 +191,15 @@
   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>
 
     <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>
-    
 
     <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='no'>m</span> <span class='kw'>&lt;-</span> <span class='fu'><a href='https://www.rdocumentation.org/packages/stats/topics/lm'>lm</a></span>(<span class='no'>y</span> ~ <span class='no'>x</span>, <span class='kw'>data</span> <span class='kw'>=</span> <span class='no'>massart97ex1</span>)
+<span class='no'>m</span> <span class='kw'>&lt;-</span> <span class='fu'><a href='https://rdrr.io/r/stats/lm.html'>lm</a></span>(<span class='no'>y</span> ~ <span class='no'>x</span>, <span class='kw'>data</span> <span class='kw'>=</span> <span class='no'>massart97ex1</span>)
 <span class='fu'>inverse.predict</span>(<span class='no'>m</span>, <span class='fl'>15</span>)        <span class='co'>#  6.1 +- 4.9</span></div><div class='output co'>#&gt; $Prediction
 #&gt; [1] 6.09381
 #&gt; 
@@ -213,7 +222,7 @@
 #&gt; 
 #&gt; $`Confidence Limits`
 #&gt; [1] 39.03178 48.84788
-#&gt; </div><div class='input'><span class='fu'>inverse.predict</span>(<span class='no'>m</span>, <span class='fu'><a href='https://www.rdocumentation.org/packages/base/topics/rep'>rep</a></span>(<span class='fl'>90</span>,<span class='fl'>5</span>)) <span class='co'># 43.9 +- 3.2</span></div><div class='output co'>#&gt; $Prediction
+#&gt; </div><div class='input'><span class='fu'>inverse.predict</span>(<span class='no'>m</span>, <span class='fu'><a href='https://rdrr.io/r/base/rep.html'>rep</a></span>(<span class='fl'>90</span>,<span class='fl'>5</span>)) <span class='co'># 43.9 +- 3.2</span></div><div class='output co'>#&gt; $Prediction
 #&gt; [1] 43.93983
 #&gt; 
 #&gt; $`Standard Error`
@@ -227,16 +236,16 @@
 #&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='no'>weights</span> <span class='kw'>&lt;-</span> <span class='fu'><a href='https://www.rdocumentation.org/packages/base/topics/with'>with</a></span>(<span class='no'>massart97ex3</span>, {
-  <span class='no'>yx</span> <span class='kw'>&lt;-</span> <span class='fu'><a href='https://www.rdocumentation.org/packages/base/topics/split'>split</a></span>(<span class='no'>y</span>, <span class='no'>x</span>)
-  <span class='no'>ybar</span> <span class='kw'>&lt;-</span> <span class='fu'><a href='https://www.rdocumentation.org/packages/base/topics/lapply'>sapply</a></span>(<span class='no'>yx</span>, <span class='no'>mean</span>)
-  <span class='no'>s</span> <span class='kw'>&lt;-</span> <span class='fu'><a href='https://www.rdocumentation.org/packages/base/topics/Round'>round</a></span>(<span class='fu'><a href='https://www.rdocumentation.org/packages/base/topics/lapply'>sapply</a></span>(<span class='no'>yx</span>, <span class='no'>sd</span>), <span class='kw'>digits</span> <span class='kw'>=</span> <span class='fl'>2</span>)
-  <span class='no'>w</span> <span class='kw'>&lt;-</span> <span class='fu'><a href='https://www.rdocumentation.org/packages/base/topics/Round'>round</a></span>(<span class='fl'>1</span> / (<span class='no'>s</span>^<span class='fl'>2</span>), <span class='kw'>digits</span> <span class='kw'>=</span> <span class='fl'>3</span>)
+<span class='no'>weights</span> <span class='kw'>&lt;-</span> <span class='fu'><a href='https://rdrr.io/r/base/with.html'>with</a></span>(<span class='no'>massart97ex3</span>, {
+  <span class='no'>yx</span> <span class='kw'>&lt;-</span> <span class='fu'><a href='https://rdrr.io/r/base/split.html'>split</a></span>(<span class='no'>y</span>, <span class='no'>x</span>)
+  <span class='no'>ybar</span> <span class='kw'>&lt;-</span> <span class='fu'><a href='https://rdrr.io/r/base/lapply.html'>sapply</a></span>(<span class='no'>yx</span>, <span class='no'>mean</span>)
+  <span class='no'>s</span> <span class='kw'>&lt;-</span> <span class='fu'><a href='https://rdrr.io/r/base/Round.html'>round</a></span>(<span class='fu'><a href='https://rdrr.io/r/base/lapply.html'>sapply</a></span>(<span class='no'>yx</span>, <span class='no'>sd</span>), <span class='kw'>digits</span> <span class='kw'>=</span> <span class='fl'>2</span>)
+  <span class='no'>w</span> <span class='kw'>&lt;-</span> <span class='fu'><a href='https://rdrr.io/r/base/Round.html'>round</a></span>(<span class='fl'>1</span> / (<span class='no'>s</span>^<span class='fl'>2</span>), <span class='kw'>digits</span> <span class='kw'>=</span> <span class='fl'>3</span>)
 })
 
-<span class='no'>massart97ex3.means</span> <span class='kw'>&lt;-</span> <span class='fu'><a href='https://www.rdocumentation.org/packages/stats/topics/aggregate'>aggregate</a></span>(<span class='no'>y</span> ~ <span class='no'>x</span>, <span class='no'>massart97ex3</span>, <span class='no'>mean</span>)
+<span class='no'>massart97ex3.means</span> <span class='kw'>&lt;-</span> <span class='fu'><a href='https://rdrr.io/r/stats/aggregate.html'>aggregate</a></span>(<span class='no'>y</span> ~ <span class='no'>x</span>, <span class='no'>massart97ex3</span>, <span class='no'>mean</span>)
 
-<span class='no'>m3.means</span> <span class='kw'>&lt;-</span> <span class='fu'><a href='https://www.rdocumentation.org/packages/stats/topics/lm'>lm</a></span>(<span class='no'>y</span> ~ <span class='no'>x</span>, <span class='kw'>w</span> <span class='kw'>=</span> <span class='no'>weights</span>, <span class='kw'>data</span> <span class='kw'>=</span> <span class='no'>massart97ex3.means</span>)
+<span class='no'>m3.means</span> <span class='kw'>&lt;-</span> <span class='fu'><a href='https://rdrr.io/r/stats/lm.html'>lm</a></span>(<span class='no'>y</span> ~ <span class='no'>x</span>, <span class='kw'>w</span> <span class='kw'>=</span> <span class='no'>weights</span>, <span class='kw'>data</span> <span class='kw'>=</span> <span class='no'>massart97ex3.means</span>)
 
 <span class='fu'>inverse.predict</span>(<span class='no'>m3.means</span>, <span class='fl'>15</span>, <span class='kw'>ws</span> <span class='kw'>=</span> <span class='fl'>1.67</span>)  <span class='co'># 5.9 +- 2.5</span></div><div class='output co'>#&gt; $Prediction
 #&gt; [1] 5.865367
@@ -263,36 +272,30 @@
 #&gt; </div><div class='input'>
 </div></pre>
   </div>
-  <div class="col-md-3 hidden-xs hidden-sm" id="sidebar">
-    <h2>Contents</h2>
-    <ul class="nav nav-pills nav-stacked">
-      <li><a href="#arguments">Arguments</a></li>
-      
-      <li><a href="#value">Value</a></li>
-
-      <li><a href="#note">Note</a></li>
-
-      <li><a href="#references">References</a></li>
-      
-      <li><a href="#examples">Examples</a></li>
-    </ul>
-
+  <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>
 </div>
 
+
       <footer>
       <div class="copyright">
   <p>Developed by Johannes Ranke.</p>
 </div>
 
 <div class="pkgdown">
-  <p>Site built with <a href="https://pkgdown.r-lib.org/">pkgdown</a> 1.3.0.</p>
+  <p>Site built with <a href="https://pkgdown.r-lib.org/">pkgdown</a> 1.5.1.</p>
 </div>
+
       </footer>
    </div>
 
   
 
+
   </body>
 </html>
 
+
diff --git a/docs/reference/lod.html b/docs/reference/lod.html
index dcde1b3..e5a1158 100644
--- a/docs/reference/lod.html
+++ b/docs/reference/lod.html
@@ -8,21 +8,29 @@
 
 <title>Estimate a limit of detection (LOD) — lod • chemCal</title>
 
+
 <!-- jquery -->
-<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js" integrity="sha256-FgpCb/KJQlLNfOu91ta32o/NMZxltwRo8QtmkMRdAu8=" crossorigin="anonymous"></script>
+<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/3.3.7/css/bootstrap.min.css" integrity="sha256-916EbMg70RQy9LHiGkXzG8hSg9EdNy97GazNG/aiY1w=" crossorigin="anonymous" />
-<script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/js/bootstrap.min.js" integrity="sha256-U5ZEeKfGNOja007MMD3YBI0A3OSZOQbeG6z2f2Y0hu8=" crossorigin="anonymous"></script>
+<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/4.7.0/css/font-awesome.min.css" integrity="sha256-eZrrJcwDc/3uDhsdt61sL2oOBY362qM3lon1gyExkL0=" crossorigin="anonymous" />
+<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/2.0.4/clipboard.min.js" integrity="sha256-FiZwavyI2V6+EXO1U+xzLG3IKldpiTFf3153ea9zikQ=" crossorigin="anonymous"></script>
+<script src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.6/clipboard.min.js" integrity="sha256-inc5kl9MA1hkeYUt+EC3BhlIgyp/2jDIyBLS6k3UxPI=" crossorigin="anonymous"></script>
 
-<!-- sticky kit -->
-<script src="https://cdnjs.cloudflare.com/ajax/libs/sticky-kit/1.1.3/sticky-kit.min.js" integrity="sha256-c4Rlo1ZozqTPE2RLuvbusY3+SU1pQaJC0TjuhygMipw=" 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">
@@ -30,8 +38,8 @@
 
 
 
-<meta property="og:title" content="Estimate a limit of detection (LOD) — lod" />
 
+<meta property="og:title" content="Estimate a limit of detection (LOD) — lod" />
 <meta property="og:description" content="The decision limit (German: Nachweisgrenze) is defined as the signal or
   analyte concentration that is significantly different from the blank signal
   with a first order error alpha (one-sided significance test).
@@ -40,7 +48,7 @@
   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)." />
-<meta name="twitter:card" content="summary" />
+
 
 
 
@@ -54,9 +62,10 @@
 <![endif]-->
 
 
+
   </head>
 
-  <body>
+  <body data-spy="scroll" data-target="#toc">
     <div class="container template-reference-topic">
       <header>
       <div class="navbar navbar-default navbar-fixed-top" role="navigation">
@@ -78,7 +87,7 @@
       <ul class="nav navbar-nav">
         <li>
   <a href="../index.html">
-    <span class="fa fa-home fa-lg"></span>
+    <span class="fas fa fas fa-home fa-lg"></span>
      
   </a>
 </li>
@@ -92,9 +101,13 @@
   <a href="../news/index.html">Changelog</a>
 </li>
       </ul>
-      
       <ul class="nav navbar-nav navbar-right">
-        
+        <li>
+  <a href="http://github.com/jranke/chemCal/">
+    <span class="fab fa fab fa-github fa-lg"></span>
+     
+  </a>
+</li>
       </ul>
       
     </div><!--/.nav-collapse -->
@@ -102,6 +115,7 @@
 </div><!--/.navbar -->
 
       
+
       </header>
 
 <div class="row">
@@ -113,7 +127,6 @@
     </div>
 
     <div class="ref-description">
-    
     <p>The decision limit (German: Nachweisgrenze) is defined as the signal or
   analyte concentration that is significantly different from the blank signal
   with a first order error alpha (one-sided significance test).
@@ -122,23 +135,22 @@
   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).</p>
-    
     </div>
 
-    <pre class="usage">lod(object, &#8230;, alpha = 0.05, beta = 0.05, method = "default", tol = "default")</pre>
-    
+    <pre class="usage"><span class='fu'>lod</span>(<span class='no'>object</span>, <span class='no'>...</span>, <span class='kw'>alpha</span> <span class='kw'>=</span> <span class='fl'>0.05</span>, <span class='kw'>beta</span> <span class='kw'>=</span> <span class='fl'>0.05</span>, <span class='kw'>method</span> <span class='kw'>=</span> <span class='st'>"default"</span>, <span class='kw'>tol</span> <span class='kw'>=</span> <span class='st'>"default"</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://www.rdocumentation.org/packages/stats/topics/lm'>lm</a></code> or 
-    <code><a href='https://www.rdocumentation.org/packages/MASS/topics/rlm'>rlm</a></code> 
+      <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>, 
     optionally from a weighted regression.</p></td>
     </tr>
     <tr>
-      <th>&#8230;</th>
+      <th>...</th>
       <td><p>Placeholder for further arguments that might be needed by 
     future implementations.</p></td>
     </tr>
@@ -165,12 +177,11 @@
     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>
 
     <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>
 
     <p>- The default values for alpha and beta are the ones recommended by IUPAC.
@@ -178,9 +189,8 @@
     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://www.rdocumentation.org/packages/stats/topics/predict.lm'>predict.lm</a></code>
+    a weights argument for the internally used <code><a href='https://rdrr.io/r/stats/predict.lm.html'>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>
 
     <p>Massart, L.M, Vandenginste, B.G.M., Buydens, L.M.C., De Jong, S., Lewi, P.J., 
@@ -192,14 +202,12 @@
 <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='no'>m</span> <span class='kw'>&lt;-</span> <span class='fu'><a href='https://www.rdocumentation.org/packages/stats/topics/lm'>lm</a></span>(<span class='no'>y</span> ~ <span class='no'>x</span>, <span class='kw'>data</span> <span class='kw'>=</span> <span class='no'>din32645</span>)
+    <pre class="examples"><div class='input'><span class='no'>m</span> <span class='kw'>&lt;-</span> <span class='fu'><a href='https://rdrr.io/r/stats/lm.html'>lm</a></span>(<span class='no'>y</span> ~ <span class='no'>x</span>, <span class='kw'>data</span> <span class='kw'>=</span> <span class='no'>din32645</span>)
 <span class='fu'>lod</span>(<span class='no'>m</span>)</div><div class='output co'>#&gt; $x
 #&gt; [1] 0.08655484
 #&gt; 
@@ -215,38 +223,30 @@
 #&gt; [1] 3155.393
 #&gt; </div></pre>
   </div>
-  <div class="col-md-3 hidden-xs hidden-sm" id="sidebar">
-    <h2>Contents</h2>
-    <ul class="nav nav-pills nav-stacked">
-      <li><a href="#arguments">Arguments</a></li>
-      
-      <li><a href="#value">Value</a></li>
-
-      <li><a href="#note">Note</a></li>
-
-      <li><a href="#references">References</a></li>
-
-      <li><a href="#see-also">See also</a></li>
-      
-      <li><a href="#examples">Examples</a></li>
-    </ul>
-
+  <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>
 </div>
 
+
       <footer>
       <div class="copyright">
   <p>Developed by Johannes Ranke.</p>
 </div>
 
 <div class="pkgdown">
-  <p>Site built with <a href="https://pkgdown.r-lib.org/">pkgdown</a> 1.3.0.</p>
+  <p>Site built with <a href="https://pkgdown.r-lib.org/">pkgdown</a> 1.5.1.</p>
 </div>
+
       </footer>
    </div>
 
   
 
+
   </body>
 </html>
 
+
diff --git a/docs/reference/loq.html b/docs/reference/loq.html
index c159638..2c7dc6a 100644
--- a/docs/reference/loq.html
+++ b/docs/reference/loq.html
@@ -8,21 +8,29 @@
 
 <title>Estimate a limit of quantification (LOQ) — loq • chemCal</title>
 
+
 <!-- jquery -->
-<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js" integrity="sha256-FgpCb/KJQlLNfOu91ta32o/NMZxltwRo8QtmkMRdAu8=" crossorigin="anonymous"></script>
+<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/3.3.7/css/bootstrap.min.css" integrity="sha256-916EbMg70RQy9LHiGkXzG8hSg9EdNy97GazNG/aiY1w=" crossorigin="anonymous" />
-<script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/js/bootstrap.min.js" integrity="sha256-U5ZEeKfGNOja007MMD3YBI0A3OSZOQbeG6z2f2Y0hu8=" crossorigin="anonymous"></script>
+<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/4.7.0/css/font-awesome.min.css" integrity="sha256-eZrrJcwDc/3uDhsdt61sL2oOBY362qM3lon1gyExkL0=" crossorigin="anonymous" />
+<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/2.0.4/clipboard.min.js" integrity="sha256-FiZwavyI2V6+EXO1U+xzLG3IKldpiTFf3153ea9zikQ=" crossorigin="anonymous"></script>
+<script src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.6/clipboard.min.js" integrity="sha256-inc5kl9MA1hkeYUt+EC3BhlIgyp/2jDIyBLS6k3UxPI=" crossorigin="anonymous"></script>
 
-<!-- sticky kit -->
-<script src="https://cdnjs.cloudflare.com/ajax/libs/sticky-kit/1.1.3/sticky-kit.min.js" integrity="sha256-c4Rlo1ZozqTPE2RLuvbusY3+SU1pQaJC0TjuhygMipw=" 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">
@@ -30,8 +38,8 @@
 
 
 
-<meta property="og:title" content="Estimate a limit of quantification (LOQ) — loq" />
 
+<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
@@ -39,7 +47,7 @@
   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." />
-<meta name="twitter:card" content="summary" />
+
 
 
 
@@ -53,9 +61,10 @@
 <![endif]-->
 
 
+
   </head>
 
-  <body>
+  <body data-spy="scroll" data-target="#toc">
     <div class="container template-reference-topic">
       <header>
       <div class="navbar navbar-default navbar-fixed-top" role="navigation">
@@ -77,7 +86,7 @@
       <ul class="nav navbar-nav">
         <li>
   <a href="../index.html">
-    <span class="fa fa-home fa-lg"></span>
+    <span class="fas fa fas fa-home fa-lg"></span>
      
   </a>
 </li>
@@ -91,9 +100,13 @@
   <a href="../news/index.html">Changelog</a>
 </li>
       </ul>
-      
       <ul class="nav navbar-nav navbar-right">
-        
+        <li>
+  <a href="http://github.com/jranke/chemCal/">
+    <span class="fab fa fab fa-github fa-lg"></span>
+     
+  </a>
+</li>
       </ul>
       
     </div><!--/.nav-collapse -->
@@ -101,6 +114,7 @@
 </div><!--/.navbar -->
 
       
+
       </header>
 
 <div class="row">
@@ -112,7 +126,6 @@
     </div>
 
     <div class="ref-description">
-    
     <p>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
@@ -120,19 +133,18 @@
   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>
-    
     </div>
 
-    <pre class="usage">loq(object, &#8230;, alpha = 0.05, k = 3, n = 1, w.loq = "auto",
-    var.loq = "auto", tol = "default")</pre>
-    
+    <pre class="usage"><span class='fu'>loq</span>(<span class='no'>object</span>, <span class='no'>...</span>, <span class='kw'>alpha</span> <span class='kw'>=</span> <span class='fl'>0.05</span>, <span class='kw'>k</span> <span class='kw'>=</span> <span class='fl'>3</span>, <span class='kw'>n</span> <span class='kw'>=</span> <span class='fl'>1</span>, <span class='kw'>w.loq</span> <span class='kw'>=</span> <span class='st'>"auto"</span>,
+    <span class='kw'>var.loq</span> <span class='kw'>=</span> <span class='st'>"auto"</span>, <span class='kw'>tol</span> <span class='kw'>=</span> <span class='st'>"default"</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://www.rdocumentation.org/packages/stats/topics/lm'>lm</a></code> or 
-    <code><a href='https://www.rdocumentation.org/packages/MASS/topics/rlm'>rlm</a></code> 
+      <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>, 
     optionally from a weighted regression. If weights are specified
     in the model, either <code>w.loq</code> or <code>var.loq</code> have to 
@@ -143,7 +155,7 @@
       <td><p>The error tolerance for the prediction of x values in the calculation.</p></td>
     </tr>
     <tr>
-      <th>&#8230;</th>
+      <th>...</th>
       <td><p>Placeholder for further arguments that might be needed by 
     future implementations.</p></td>
     </tr>
@@ -177,25 +189,22 @@
     numeric value to override this.</p></td>
     </tr>
     </table>
-    
+
     <h2 class="hasAnchor" id="value"><a class="anchor" href="#value"></a>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>
 
     <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='no'>m</span> <span class='kw'>&lt;-</span> <span class='fu'><a href='https://www.rdocumentation.org/packages/stats/topics/lm'>lm</a></span>(<span class='no'>y</span> ~ <span class='no'>x</span>, <span class='kw'>data</span> <span class='kw'>=</span> <span class='no'>massart97ex1</span>)
+    <pre class="examples"><div class='input'><span class='no'>m</span> <span class='kw'>&lt;-</span> <span class='fu'><a href='https://rdrr.io/r/stats/lm.html'>lm</a></span>(<span class='no'>y</span> ~ <span class='no'>x</span>, <span class='kw'>data</span> <span class='kw'>=</span> <span class='no'>massart97ex1</span>)
 <span class='fu'>loq</span>(<span class='no'>m</span>)</div><div class='output co'>#&gt; $x
 #&gt; [1] 13.97764
 #&gt; 
@@ -210,36 +219,30 @@
 #&gt; [1] 22.68539
 #&gt; </div></pre>
   </div>
-  <div class="col-md-3 hidden-xs hidden-sm" id="sidebar">
-    <h2>Contents</h2>
-    <ul class="nav nav-pills nav-stacked">
-      <li><a href="#arguments">Arguments</a></li>
-      
-      <li><a href="#value">Value</a></li>
-
-      <li><a href="#note">Note</a></li>
-
-      <li><a href="#see-also">See also</a></li>
-      
-      <li><a href="#examples">Examples</a></li>
-    </ul>
-
+  <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>
 </div>
 
+
       <footer>
       <div class="copyright">
   <p>Developed by Johannes Ranke.</p>
 </div>
 
 <div class="pkgdown">
-  <p>Site built with <a href="https://pkgdown.r-lib.org/">pkgdown</a> 1.3.0.</p>
+  <p>Site built with <a href="https://pkgdown.r-lib.org/">pkgdown</a> 1.5.1.</p>
 </div>
+
       </footer>
    </div>
 
   
 
+
   </body>
 </html>
 
+
diff --git a/docs/reference/massart97ex1.html b/docs/reference/massart97ex1.html
index d9deb36..95e6b3f 100644
--- a/docs/reference/massart97ex1.html
+++ b/docs/reference/massart97ex1.html
@@ -8,21 +8,29 @@
 
 <title>Calibration data from Massart et al. (1997), example 1 — massart97ex1 • chemCal</title>
 
+
 <!-- jquery -->
-<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js" integrity="sha256-FgpCb/KJQlLNfOu91ta32o/NMZxltwRo8QtmkMRdAu8=" crossorigin="anonymous"></script>
+<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/3.3.7/css/bootstrap.min.css" integrity="sha256-916EbMg70RQy9LHiGkXzG8hSg9EdNy97GazNG/aiY1w=" crossorigin="anonymous" />
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+
+<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>
 
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+<script src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.6/clipboard.min.js" integrity="sha256-inc5kl9MA1hkeYUt+EC3BhlIgyp/2jDIyBLS6k3UxPI=" crossorigin="anonymous"></script>
 
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+<!-- 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">
@@ -30,10 +38,10 @@
 
 
 
-<meta property="og:title" content="Calibration data from Massart et al. (1997), example 1 — massart97ex1" />
 
+<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." />
-<meta name="twitter:card" content="summary" />
+
 
 
 
@@ -47,9 +55,10 @@
 <![endif]-->
 
 
+
   </head>
 
-  <body>
+  <body data-spy="scroll" data-target="#toc">
     <div class="container template-reference-topic">
       <header>
       <div class="navbar navbar-default navbar-fixed-top" role="navigation">
@@ -71,7 +80,7 @@
       <ul class="nav navbar-nav">
         <li>
   <a href="../index.html">
-    <span class="fa fa-home fa-lg"></span>
+    <span class="fas fa fas fa-home fa-lg"></span>
      
   </a>
 </li>
@@ -85,9 +94,13 @@
   <a href="../news/index.html">Changelog</a>
 </li>
       </ul>
-      
       <ul class="nav navbar-nav navbar-right">
-        
+        <li>
+  <a href="http://github.com/jranke/chemCal/">
+    <span class="fab fa fab fa-github fa-lg"></span>
+     
+  </a>
+</li>
       </ul>
       
     </div><!--/.nav-collapse -->
@@ -95,6 +108,7 @@
 </div><!--/.navbar -->
 
       
+
       </header>
 
 <div class="row">
@@ -106,50 +120,46 @@
     </div>
 
     <div class="ref-description">
-    
     <p>Sample dataset from p. 175 to test the package.</p>
-    
     </div>
 
-    <pre class="usage"><span class='fu'><a href='https://www.rdocumentation.org/packages/utils/topics/data'>data</a></span>(<span class='no'>massart97ex1</span>)</pre>
-        
+    <pre class="usage"><span class='fu'><a href='https://rdrr.io/r/utils/data.html'>data</a></span>(<span class='no'>massart97ex1</span>)</pre>
+
+
     <h2 class="hasAnchor" id="format"><a class="anchor" href="#format"></a>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>
 
     <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 class="col-md-3 hidden-xs hidden-sm" id="sidebar">
-    <h2>Contents</h2>
-    <ul class="nav nav-pills nav-stacked">
-      
-      <li><a href="#format">Format</a></li>
-
-      <li><a href="#source">Source</a></li>
-          </ul>
-
+  <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>
 </div>
 
+
       <footer>
       <div class="copyright">
   <p>Developed by Johannes Ranke.</p>
 </div>
 
 <div class="pkgdown">
-  <p>Site built with <a href="https://pkgdown.r-lib.org/">pkgdown</a> 1.3.0.</p>
+  <p>Site built with <a href="https://pkgdown.r-lib.org/">pkgdown</a> 1.5.1.</p>
 </div>
+
       </footer>
    </div>
 
   
 
+
   </body>
 </html>
 
+
diff --git a/docs/reference/massart97ex3.html b/docs/reference/massart97ex3.html
index c1bbbc2..a1efeba 100644
--- a/docs/reference/massart97ex3.html
+++ b/docs/reference/massart97ex3.html
@@ -8,21 +8,29 @@
 
 <title>Calibration data from Massart et al. (1997), example 3 — massart97ex3 • chemCal</title>
 
+
 <!-- jquery -->
-<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js" integrity="sha256-FgpCb/KJQlLNfOu91ta32o/NMZxltwRo8QtmkMRdAu8=" crossorigin="anonymous"></script>
+<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/3.3.7/css/bootstrap.min.css" integrity="sha256-916EbMg70RQy9LHiGkXzG8hSg9EdNy97GazNG/aiY1w=" crossorigin="anonymous" />
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+
+<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>
 
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-<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css" integrity="sha256-eZrrJcwDc/3uDhsdt61sL2oOBY362qM3lon1gyExkL0=" crossorigin="anonymous" />
+<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" />
 
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+<script src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.6/clipboard.min.js" integrity="sha256-inc5kl9MA1hkeYUt+EC3BhlIgyp/2jDIyBLS6k3UxPI=" crossorigin="anonymous"></script>
 
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+<!-- 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">
@@ -30,10 +38,10 @@
 
 
 
-<meta property="og:title" content="Calibration data from Massart et al. (1997), example 3 — massart97ex3" />
 
+<meta property="og:title" content="Calibration data from Massart et al. (1997), example 3 — massart97ex3" />
 <meta property="og:description" content="Sample dataset from p. 188 to test the package." />
-<meta name="twitter:card" content="summary" />
+
 
 
 
@@ -47,9 +55,10 @@
 <![endif]-->
 
 
+
   </head>
 
-  <body>
+  <body data-spy="scroll" data-target="#toc">
     <div class="container template-reference-topic">
       <header>
       <div class="navbar navbar-default navbar-fixed-top" role="navigation">
@@ -71,7 +80,7 @@
       <ul class="nav navbar-nav">
         <li>
   <a href="../index.html">
-    <span class="fa fa-home fa-lg"></span>
+    <span class="fas fa fas fa-home fa-lg"></span>
      
   </a>
 </li>
@@ -85,9 +94,13 @@
   <a href="../news/index.html">Changelog</a>
 </li>
       </ul>
-      
       <ul class="nav navbar-nav navbar-right">
-        
+        <li>
+  <a href="http://github.com/jranke/chemCal/">
+    <span class="fab fa fab fa-github fa-lg"></span>
+     
+  </a>
+</li>
       </ul>
       
     </div><!--/.nav-collapse -->
@@ -95,6 +108,7 @@
 </div><!--/.navbar -->
 
       
+
       </header>
 
 <div class="row">
@@ -106,38 +120,35 @@
     </div>
 
     <div class="ref-description">
-    
     <p>Sample dataset from p. 188 to test the package.</p>
-    
     </div>
 
     <pre class="usage"><span class='no'>massart97ex3</span></pre>
-        
+
+
     <h2 class="hasAnchor" id="format"><a class="anchor" href="#format"></a>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>
 
     <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>
-    
 
     <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='no'>weights</span> <span class='kw'>&lt;-</span> <span class='fu'><a href='https://www.rdocumentation.org/packages/base/topics/with'>with</a></span>(<span class='no'>massart97ex3</span>, {
-  <span class='no'>yx</span> <span class='kw'>&lt;-</span> <span class='fu'><a href='https://www.rdocumentation.org/packages/base/topics/split'>split</a></span>(<span class='no'>y</span>, <span class='no'>x</span>)
-  <span class='no'>ybar</span> <span class='kw'>&lt;-</span> <span class='fu'><a href='https://www.rdocumentation.org/packages/base/topics/lapply'>sapply</a></span>(<span class='no'>yx</span>, <span class='no'>mean</span>)
-  <span class='no'>s</span> <span class='kw'>&lt;-</span> <span class='fu'><a href='https://www.rdocumentation.org/packages/base/topics/Round'>round</a></span>(<span class='fu'><a href='https://www.rdocumentation.org/packages/base/topics/lapply'>sapply</a></span>(<span class='no'>yx</span>, <span class='no'>sd</span>), <span class='kw'>digits</span> <span class='kw'>=</span> <span class='fl'>2</span>)
-  <span class='no'>w</span> <span class='kw'>&lt;-</span> <span class='fu'><a href='https://www.rdocumentation.org/packages/base/topics/Round'>round</a></span>(<span class='fl'>1</span> / (<span class='no'>s</span>^<span class='fl'>2</span>), <span class='kw'>digits</span> <span class='kw'>=</span> <span class='fl'>3</span>)
+<span class='no'>weights</span> <span class='kw'>&lt;-</span> <span class='fu'><a href='https://rdrr.io/r/base/with.html'>with</a></span>(<span class='no'>massart97ex3</span>, {
+  <span class='no'>yx</span> <span class='kw'>&lt;-</span> <span class='fu'><a href='https://rdrr.io/r/base/split.html'>split</a></span>(<span class='no'>y</span>, <span class='no'>x</span>)
+  <span class='no'>ybar</span> <span class='kw'>&lt;-</span> <span class='fu'><a href='https://rdrr.io/r/base/lapply.html'>sapply</a></span>(<span class='no'>yx</span>, <span class='no'>mean</span>)
+  <span class='no'>s</span> <span class='kw'>&lt;-</span> <span class='fu'><a href='https://rdrr.io/r/base/Round.html'>round</a></span>(<span class='fu'><a href='https://rdrr.io/r/base/lapply.html'>sapply</a></span>(<span class='no'>yx</span>, <span class='no'>sd</span>), <span class='kw'>digits</span> <span class='kw'>=</span> <span class='fl'>2</span>)
+  <span class='no'>w</span> <span class='kw'>&lt;-</span> <span class='fu'><a href='https://rdrr.io/r/base/Round.html'>round</a></span>(<span class='fl'>1</span> / (<span class='no'>s</span>^<span class='fl'>2</span>), <span class='kw'>digits</span> <span class='kw'>=</span> <span class='fl'>3</span>)
 })
 
-<span class='no'>massart97ex3.means</span> <span class='kw'>&lt;-</span> <span class='fu'><a href='https://www.rdocumentation.org/packages/stats/topics/aggregate'>aggregate</a></span>(<span class='no'>y</span> ~ <span class='no'>x</span>, <span class='no'>massart97ex3</span>, <span class='no'>mean</span>)
+<span class='no'>massart97ex3.means</span> <span class='kw'>&lt;-</span> <span class='fu'><a href='https://rdrr.io/r/stats/aggregate.html'>aggregate</a></span>(<span class='no'>y</span> ~ <span class='no'>x</span>, <span class='no'>massart97ex3</span>, <span class='no'>mean</span>)
 
-<span class='no'>m3.means</span> <span class='kw'>&lt;-</span> <span class='fu'><a href='https://www.rdocumentation.org/packages/stats/topics/lm'>lm</a></span>(<span class='no'>y</span> ~ <span class='no'>x</span>, <span class='kw'>w</span> <span class='kw'>=</span> <span class='no'>weights</span>, <span class='kw'>data</span> <span class='kw'>=</span> <span class='no'>massart97ex3.means</span>)
+<span class='no'>m3.means</span> <span class='kw'>&lt;-</span> <span class='fu'><a href='https://rdrr.io/r/stats/lm.html'>lm</a></span>(<span class='no'>y</span> ~ <span class='no'>x</span>, <span class='kw'>w</span> <span class='kw'>=</span> <span class='no'>weights</span>, <span class='kw'>data</span> <span class='kw'>=</span> <span class='no'>massart97ex3.means</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='no'>m3.means</span>, <span class='fl'>15</span>, <span class='kw'>ws</span> <span class='kw'>=</span> <span class='fl'>1.67</span>)  <span class='co'># 5.9 +- 2.5</span></div><div class='output co'>#&gt; $Prediction
@@ -165,7 +176,7 @@
 #&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='no'>m0</span> <span class='kw'>&lt;-</span> <span class='fu'><a href='https://www.rdocumentation.org/packages/stats/topics/lm'>lm</a></span>(<span class='no'>y</span> ~ <span class='no'>x</span>, <span class='kw'>data</span> <span class='kw'>=</span> <span class='no'>massart97ex3</span>)
+<span class='no'>m0</span> <span class='kw'>&lt;-</span> <span class='fu'><a href='https://rdrr.io/r/stats/lm.html'>lm</a></span>(<span class='no'>y</span> ~ <span class='no'>x</span>, <span class='kw'>data</span> <span class='kw'>=</span> <span class='no'>massart97ex3</span>)
 <span class='fu'><a href='lod.html'>lod</a></span>(<span class='no'>m0</span>)</div><div class='output co'>#&gt; $x
 #&gt; [1] 5.407085
 #&gt; 
@@ -194,33 +205,30 @@
 # variances on which the weights are based is quite inaccurate anyway. 
 </div></pre>
   </div>
-  <div class="col-md-3 hidden-xs hidden-sm" id="sidebar">
-    <h2>Contents</h2>
-    <ul class="nav nav-pills nav-stacked">
-      
-      <li><a href="#format">Format</a></li>
-
-      <li><a href="#source">Source</a></li>
-      
-      <li><a href="#examples">Examples</a></li>
-    </ul>
-
+  <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>
 </div>
 
+
       <footer>
       <div class="copyright">
   <p>Developed by Johannes Ranke.</p>
 </div>
 
 <div class="pkgdown">
-  <p>Site built with <a href="https://pkgdown.r-lib.org/">pkgdown</a> 1.3.0.</p>
+  <p>Site built with <a href="https://pkgdown.r-lib.org/">pkgdown</a> 1.5.1.</p>
 </div>
+
       </footer>
    </div>
 
   
 
+
   </body>
 </html>
 
+
diff --git a/docs/reference/rl95_cadmium.html b/docs/reference/rl95_cadmium.html
index 6678817..509a0ab 100644
--- a/docs/reference/rl95_cadmium.html
+++ b/docs/reference/rl95_cadmium.html
@@ -8,21 +8,29 @@
 
 <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/3.3.1/jquery.min.js" integrity="sha256-FgpCb/KJQlLNfOu91ta32o/NMZxltwRo8QtmkMRdAu8=" crossorigin="anonymous"></script>
+<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/3.3.7/css/bootstrap.min.css" integrity="sha256-916EbMg70RQy9LHiGkXzG8hSg9EdNy97GazNG/aiY1w=" crossorigin="anonymous" />
-<script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/js/bootstrap.min.js" integrity="sha256-U5ZEeKfGNOja007MMD3YBI0A3OSZOQbeG6z2f2Y0hu8=" crossorigin="anonymous"></script>
+<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/4.7.0/css/font-awesome.min.css" integrity="sha256-eZrrJcwDc/3uDhsdt61sL2oOBY362qM3lon1gyExkL0=" crossorigin="anonymous" />
+<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/2.0.4/clipboard.min.js" integrity="sha256-FiZwavyI2V6+EXO1U+xzLG3IKldpiTFf3153ea9zikQ=" crossorigin="anonymous"></script>
+<script src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.6/clipboard.min.js" integrity="sha256-inc5kl9MA1hkeYUt+EC3BhlIgyp/2jDIyBLS6k3UxPI=" crossorigin="anonymous"></script>
 
-<!-- sticky kit -->
-<script src="https://cdnjs.cloudflare.com/ajax/libs/sticky-kit/1.1.3/sticky-kit.min.js" integrity="sha256-c4Rlo1ZozqTPE2RLuvbusY3+SU1pQaJC0TjuhygMipw=" 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">
@@ -30,10 +38,10 @@
 
 
 
-<meta property="og:title" content="Cadmium concentrations measured by AAS as reported by Rocke and Lorenzato (1995) — rl95_cadmium" />
 
+<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)." />
-<meta name="twitter:card" content="summary" />
+
 
 
 
@@ -47,9 +55,10 @@
 <![endif]-->
 
 
+
   </head>
 
-  <body>
+  <body data-spy="scroll" data-target="#toc">
     <div class="container template-reference-topic">
       <header>
       <div class="navbar navbar-default navbar-fixed-top" role="navigation">
@@ -71,7 +80,7 @@
       <ul class="nav navbar-nav">
         <li>
   <a href="../index.html">
-    <span class="fa fa-home fa-lg"></span>
+    <span class="fas fa fas fa-home fa-lg"></span>
      
   </a>
 </li>
@@ -85,9 +94,13 @@
   <a href="../news/index.html">Changelog</a>
 </li>
       </ul>
-      
       <ul class="nav navbar-nav navbar-right">
-        
+        <li>
+  <a href="http://github.com/jranke/chemCal/">
+    <span class="fab fa fab fa-github fa-lg"></span>
+     
+  </a>
+</li>
       </ul>
       
     </div><!--/.nav-collapse -->
@@ -95,6 +108,7 @@
 </div><!--/.navbar -->
 
       
+
       </header>
 
 <div class="row">
@@ -106,49 +120,45 @@
     </div>
 
     <div class="ref-description">
-    
     <p>Dataset reproduced from Table 1 in Rocke and Lorenzato (1995).</p>
-    
     </div>
 
-        
+
+
     <h2 class="hasAnchor" id="format"><a class="anchor" href="#format"></a>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>
 
     <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 class="col-md-3 hidden-xs hidden-sm" id="sidebar">
-    <h2>Contents</h2>
-    <ul class="nav nav-pills nav-stacked">
-      
-      <li><a href="#format">Format</a></li>
-
-      <li><a href="#source">Source</a></li>
-          </ul>
-
+  <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>
 </div>
 
+
       <footer>
       <div class="copyright">
   <p>Developed by Johannes Ranke.</p>
 </div>
 
 <div class="pkgdown">
-  <p>Site built with <a href="https://pkgdown.r-lib.org/">pkgdown</a> 1.3.0.</p>
+  <p>Site built with <a href="https://pkgdown.r-lib.org/">pkgdown</a> 1.5.1.</p>
 </div>
+
       </footer>
    </div>
 
   
 
+
   </body>
 </html>
 
+
diff --git a/docs/reference/rl95_toluene.html b/docs/reference/rl95_toluene.html
index 805249f..f295d6d 100644
--- a/docs/reference/rl95_toluene.html
+++ b/docs/reference/rl95_toluene.html
@@ -8,21 +8,29 @@
 
 <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/3.3.1/jquery.min.js" integrity="sha256-FgpCb/KJQlLNfOu91ta32o/NMZxltwRo8QtmkMRdAu8=" crossorigin="anonymous"></script>
+<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/3.3.7/css/bootstrap.min.css" integrity="sha256-916EbMg70RQy9LHiGkXzG8hSg9EdNy97GazNG/aiY1w=" crossorigin="anonymous" />
-<script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/js/bootstrap.min.js" integrity="sha256-U5ZEeKfGNOja007MMD3YBI0A3OSZOQbeG6z2f2Y0hu8=" crossorigin="anonymous"></script>
+<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/4.7.0/css/font-awesome.min.css" integrity="sha256-eZrrJcwDc/3uDhsdt61sL2oOBY362qM3lon1gyExkL0=" crossorigin="anonymous" />
+<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/2.0.4/clipboard.min.js" integrity="sha256-FiZwavyI2V6+EXO1U+xzLG3IKldpiTFf3153ea9zikQ=" crossorigin="anonymous"></script>
+<script src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.6/clipboard.min.js" integrity="sha256-inc5kl9MA1hkeYUt+EC3BhlIgyp/2jDIyBLS6k3UxPI=" crossorigin="anonymous"></script>
 
-<!-- sticky kit -->
-<script src="https://cdnjs.cloudflare.com/ajax/libs/sticky-kit/1.1.3/sticky-kit.min.js" integrity="sha256-c4Rlo1ZozqTPE2RLuvbusY3+SU1pQaJC0TjuhygMipw=" 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">
@@ -30,10 +38,12 @@
 
 
 
+
 <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." />
 
-<meta property="og:description" content="Dataset reproduced from Table 4 in Rocke and Lorenzato (1995)." />
-<meta name="twitter:card" content="summary" />
 
 
 
@@ -47,9 +57,10 @@
 <![endif]-->
 
 
+
   </head>
 
-  <body>
+  <body data-spy="scroll" data-target="#toc">
     <div class="container template-reference-topic">
       <header>
       <div class="navbar navbar-default navbar-fixed-top" role="navigation">
@@ -71,7 +82,7 @@
       <ul class="nav navbar-nav">
         <li>
   <a href="../index.html">
-    <span class="fa fa-home fa-lg"></span>
+    <span class="fas fa fas fa-home fa-lg"></span>
      
   </a>
 </li>
@@ -85,9 +96,13 @@
   <a href="../news/index.html">Changelog</a>
 </li>
       </ul>
-      
       <ul class="nav navbar-nav navbar-right">
-        
+        <li>
+  <a href="http://github.com/jranke/chemCal/">
+    <span class="fab fa fab fa-github fa-lg"></span>
+     
+  </a>
+</li>
       </ul>
       
     </div><!--/.nav-collapse -->
@@ -95,6 +110,7 @@
 </div><!--/.navbar -->
 
       
+
       </header>
 
 <div class="row">
@@ -106,49 +122,47 @@
     </div>
 
     <div class="ref-description">
-    
-    <p>Dataset reproduced from Table 4 in Rocke and Lorenzato (1995).</p>
-    
+    <p>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.</p>
     </div>
 
-        
+
+
     <h2 class="hasAnchor" id="format"><a class="anchor" href="#format"></a>Format</h2>
 
-    <p>A dataframe containing four replicate observations for each 
+    <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>
 
     <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 class="col-md-3 hidden-xs hidden-sm" id="sidebar">
-    <h2>Contents</h2>
-    <ul class="nav nav-pills nav-stacked">
-      
-      <li><a href="#format">Format</a></li>
-
-      <li><a href="#source">Source</a></li>
-          </ul>
-
+  <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>
 </div>
 
+
       <footer>
       <div class="copyright">
   <p>Developed by Johannes Ranke.</p>
 </div>
 
 <div class="pkgdown">
-  <p>Site built with <a href="https://pkgdown.r-lib.org/">pkgdown</a> 1.3.0.</p>
+  <p>Site built with <a href="https://pkgdown.r-lib.org/">pkgdown</a> 1.5.1.</p>
 </div>
+
       </footer>
    </div>
 
   
 
+
   </body>
 </html>
 
+
diff --git a/docs/reference/utstats14.html b/docs/reference/utstats14.html
index 1385339..c15f06d 100644
--- a/docs/reference/utstats14.html
+++ b/docs/reference/utstats14.html
@@ -8,21 +8,29 @@
 
 <title>Example data for calibration with replicates from University of Toronto — utstats14 • chemCal</title>
 
+
 <!-- jquery -->
-<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js" integrity="sha256-FgpCb/KJQlLNfOu91ta32o/NMZxltwRo8QtmkMRdAu8=" crossorigin="anonymous"></script>
+<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/3.3.7/css/bootstrap.min.css" integrity="sha256-916EbMg70RQy9LHiGkXzG8hSg9EdNy97GazNG/aiY1w=" crossorigin="anonymous" />
-<script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/js/bootstrap.min.js" integrity="sha256-U5ZEeKfGNOja007MMD3YBI0A3OSZOQbeG6z2f2Y0hu8=" crossorigin="anonymous"></script>
+<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/4.7.0/css/font-awesome.min.css" integrity="sha256-eZrrJcwDc/3uDhsdt61sL2oOBY362qM3lon1gyExkL0=" crossorigin="anonymous" />
+<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/2.0.4/clipboard.min.js" integrity="sha256-FiZwavyI2V6+EXO1U+xzLG3IKldpiTFf3153ea9zikQ=" crossorigin="anonymous"></script>
+<script src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.6/clipboard.min.js" integrity="sha256-inc5kl9MA1hkeYUt+EC3BhlIgyp/2jDIyBLS6k3UxPI=" crossorigin="anonymous"></script>
 
-<!-- sticky kit -->
-<script src="https://cdnjs.cloudflare.com/ajax/libs/sticky-kit/1.1.3/sticky-kit.min.js" integrity="sha256-c4Rlo1ZozqTPE2RLuvbusY3+SU1pQaJC0TjuhygMipw=" 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">
@@ -30,10 +38,10 @@
 
 
 
-<meta property="og:title" content="Example data for calibration with replicates from University of Toronto — utstats14" />
 
+<meta property="og:title" content="Example data for calibration with replicates from University of Toronto — utstats14" />
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     <p>Dataset read into R from <a href='http://www.chem.utoronto.ca/coursenotes/analsci/stats/files/example14.xls'>http://www.chem.utoronto.ca/coursenotes/analsci/stats/files/example14.xls</a>.</p>
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     <h2 class="hasAnchor" id="format"><a class="anchor" href="#format"></a>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>
 
     <p>David Stone and Jon Ellis (2011) Statistics in Analytical Chemistry. Tutorial website
   maintained by the Departments of Chemistry, University of Toronto.
   <a href='http://www.chem.utoronto.ca/coursenotes/analsci/stats/index.html'>http://www.chem.utoronto.ca/coursenotes/analsci/stats/index.html</a></p>
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-      <li><a href="#format">Format</a></li>
-
-      <li><a href="#source">Source</a></li>
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