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The results for the three models are printed in the -order of increasing model complexity, i.e. SFO, then IORE, and finally DFOP.</p> - </div> - - <div id="ref-usage"> - <div class="sourceCode"><pre class="sourceCode r"><code><span><span class="fu">nafta</span><span class="op">(</span><span class="va">ds</span>, title <span class="op">=</span> <span class="cn">NA</span>, quiet <span class="op">=</span> <span class="cn">FALSE</span>, <span class="va">...</span><span class="op">)</span></span> -<span></span> -<span><span class="co"># S3 method for nafta</span></span> -<span><span class="fu"><a href="https://rdrr.io/r/base/print.html" class="external-link">print</a></span><span class="op">(</span><span class="va">x</span>, quiet <span class="op">=</span> <span class="cn">TRUE</span>, digits <span class="op">=</span> <span class="fl">3</span>, <span class="va">...</span><span class="op">)</span></span></code></pre></div> - </div> - - <div id="source"> - <h2>Source</h2> - <p>NAFTA (2011) Guidance for evaluating and calculating degradation -kinetics in environmental media. NAFTA Technical Working Group on -Pesticides -<a href="https://www.epa.gov/pesticide-science-and-assessing-pesticide-risks/guidance-evaluating-and-calculating-degradation" class="external-link">https://www.epa.gov/pesticide-science-and-assessing-pesticide-risks/guidance-evaluating-and-calculating-degradation</a> -accessed 2019-02-22</p> -<p>US EPA (2015) Standard Operating Procedure for Using the NAFTA Guidance to -Calculate Representative Half-life Values and Characterizing Pesticide -Degradation -<a href="https://www.epa.gov/pesticide-science-and-assessing-pesticide-risks/standard-operating-procedure-using-nafta-guidance" class="external-link">https://www.epa.gov/pesticide-science-and-assessing-pesticide-risks/standard-operating-procedure-using-nafta-guidance</a></p> - </div> - <div id="arguments"> - <h2>Arguments</h2> - <dl><dt>ds</dt> -<dd><p>A dataframe that must contain one variable called "time" with the -time values specified by the <code>time</code> argument, one column called -"name" with the grouping of the observed values, and finally one column of -observed values called "value".</p></dd> - - -<dt>title</dt> -<dd><p>Optional title of the dataset</p></dd> - - -<dt>quiet</dt> -<dd><p>Should the evaluation text be shown?</p></dd> - - -<dt>...</dt> -<dd><p>Further arguments passed to <code><a href="mmkin.html">mmkin</a></code> (not for the -printing method).</p></dd> - - -<dt>x</dt> -<dd><p>An <code>nafta</code> object.</p></dd> - - -<dt>digits</dt> -<dd><p>Number of digits to be used for printing parameters and -dissipation times.</p></dd> - -</dl></div> - <div id="value"> - <h2>Value</h2> - - -<p>An list of class <code>nafta</code>. The list element named "mmkin" is the -<code><a href="mmkin.html">mmkin</a></code> object containing the fits of the three models. The -list element named "title" contains the title of the dataset used. The -list element "data" contains the dataset used in the fits.</p> - </div> - <div id="author"> - <h2>Author</h2> - <p>Johannes Ranke</p> - </div> - - <div id="ref-examples"> - <h2>Examples</h2> - <div class="sourceCode"><pre class="sourceCode r"><code><span class="r-in"><span></span></span> -<span class="r-in"><span> <span class="va">nafta_evaluation</span> <span class="op"><-</span> <span class="fu">nafta</span><span class="op">(</span><span class="va">NAFTA_SOP_Appendix_D</span>, cores <span class="op">=</span> <span class="fl">1</span><span class="op">)</span></span></span> -<span class="r-msg co"><span class="r-pr">#></span> The SFO model is rejected as S_SFO is equal or higher than the critical value S_c</span> -<span class="r-msg co"><span class="r-pr">#></span> The representative half-life of the IORE model is longer than the one corresponding</span> -<span class="r-msg co"><span class="r-pr">#></span> to the terminal degradation rate found with the DFOP model.</span> -<span class="r-msg co"><span class="r-pr">#></span> The representative half-life obtained from the DFOP model may be used</span> -<span class="r-in"><span> <span class="fu"><a href="https://rdrr.io/r/base/print.html" class="external-link">print</a></span><span class="op">(</span><span class="va">nafta_evaluation</span><span class="op">)</span></span></span> -<span class="r-out co"><span class="r-pr">#></span> Sums of squares:</span> -<span class="r-out co"><span class="r-pr">#></span> SFO IORE DFOP </span> -<span class="r-out co"><span class="r-pr">#></span> 1378.6832 615.7730 517.8836 </span> -<span class="r-out co"><span class="r-pr">#></span> </span> -<span class="r-out co"><span class="r-pr">#></span> Critical sum of squares for checking the SFO model:</span> -<span class="r-out co"><span class="r-pr">#></span> [1] 717.4598</span> -<span class="r-out co"><span class="r-pr">#></span> </span> -<span class="r-out co"><span class="r-pr">#></span> Parameters:</span> -<span class="r-out co"><span class="r-pr">#></span> $SFO</span> -<span class="r-out co"><span class="r-pr">#></span> Estimate Pr(>t) Lower Upper</span> -<span class="r-out co"><span class="r-pr">#></span> parent_0 83.7558 1.80e-14 77.18268 90.3288</span> -<span class="r-out co"><span class="r-pr">#></span> k_parent 0.0017 7.43e-05 0.00112 0.0026</span> -<span class="r-out co"><span class="r-pr">#></span> sigma 8.7518 1.22e-05 5.64278 11.8608</span> -<span class="r-out co"><span class="r-pr">#></span> </span> -<span class="r-out co"><span class="r-pr">#></span> $IORE</span> -<span class="r-out co"><span class="r-pr">#></span> Estimate Pr(>t) Lower Upper</span> -<span class="r-out co"><span class="r-pr">#></span> parent_0 9.69e+01 NA 8.88e+01 1.05e+02</span> -<span class="r-out co"><span class="r-pr">#></span> k__iore_parent 8.40e-14 NA 1.79e-18 3.94e-09</span> -<span class="r-out co"><span class="r-pr">#></span> N_parent 6.68e+00 NA 4.19e+00 9.17e+00</span> -<span class="r-out co"><span class="r-pr">#></span> sigma 5.85e+00 NA 3.76e+00 7.94e+00</span> -<span class="r-out co"><span class="r-pr">#></span> </span> -<span class="r-out co"><span class="r-pr">#></span> $DFOP</span> -<span class="r-out co"><span class="r-pr">#></span> Estimate Pr(>t) Lower Upper</span> -<span class="r-out co"><span class="r-pr">#></span> parent_0 9.76e+01 1.94e-13 9.02e+01 1.05e+02</span> -<span class="r-out co"><span class="r-pr">#></span> k1 4.24e-02 5.92e-03 2.03e-02 8.88e-02</span> -<span class="r-out co"><span class="r-pr">#></span> k2 8.24e-04 6.48e-03 3.89e-04 1.75e-03</span> -<span class="r-out co"><span class="r-pr">#></span> g 2.88e-01 2.47e-05 1.95e-01 4.03e-01</span> -<span class="r-out co"><span class="r-pr">#></span> sigma 5.36e+00 2.22e-05 3.43e+00 7.30e+00</span> -<span class="r-out co"><span class="r-pr">#></span> </span> -<span class="r-out co"><span class="r-pr">#></span> </span> -<span class="r-out co"><span class="r-pr">#></span> DTx values:</span> -<span class="r-out co"><span class="r-pr">#></span> DT50 DT90 DT50_rep</span> -<span class="r-out co"><span class="r-pr">#></span> SFO 407 1350 407</span> -<span class="r-out co"><span class="r-pr">#></span> IORE 541 5190000 1560000</span> -<span class="r-out co"><span class="r-pr">#></span> DFOP 429 2380 841</span> -<span class="r-out co"><span class="r-pr">#></span> </span> -<span class="r-out co"><span class="r-pr">#></span> Representative half-life:</span> -<span class="r-out co"><span class="r-pr">#></span> [1] 841.41</span> -<span class="r-in"><span> <span class="fu"><a href="https://rdrr.io/r/graphics/plot.default.html" class="external-link">plot</a></span><span class="op">(</span><span class="va">nafta_evaluation</span><span class="op">)</span></span></span> -<span class="r-plt img"><img src="nafta-1.png" alt="" width="700" height="433"></span> -<span class="r-in"><span></span></span> -</code></pre></div> - 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