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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> + + <pre class="usage"><span class='fu'>nafta</span>(<span class='no'>ds</span>, <span class='kw'>title</span> <span class='kw'>=</span> <span class='fl'>NA</span>, <span class='kw'>quiet</span> <span class='kw'>=</span> <span class='fl'>FALSE</span>, <span class='no'>...</span>) + +<span class='co'># S3 method for nafta</span> +<span class='fu'><a href='https://rdrr.io/r/base/print.html'>print</a></span>(<span class='no'>x</span>, <span class='kw'>quiet</span> <span class='kw'>=</span> <span class='fl'>TRUE</span>, <span class='kw'>digits</span> <span class='kw'>=</span> <span class='fl'>3</span>, <span class='no'>...</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>ds</th> + <td><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></td> + </tr> + <tr> + <th>title</th> + <td><p>Optional title of the dataset</p></td> + </tr> + <tr> + <th>quiet</th> + <td><p>Should the evaluation text be shown?</p></td> + </tr> + <tr> + <th>...</th> + <td><p>Further arguments passed to <code><a href='mmkin.html'>mmkin</a></code> (not for the +printing method).</p></td> + </tr> + <tr> + <th>x</th> + <td><p>An <code>nafta</code> object.</p></td> + </tr> + <tr> + <th>digits</th> + <td><p>Number of digits to be used for printing parameters and +dissipation times.</p></td> + </tr> + </table> + + <h2 class="hasAnchor" id="source"><a class="anchor" href="#source"></a>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'>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'>https://www.epa.gov/pesticide-science-and-assessing-pesticide-risks/standard-operating-procedure-using-nafta-guidance</a></p> + <h2 class="hasAnchor" id="value"><a class="anchor" href="#value"></a>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> + + <h2 class="hasAnchor" id="examples"><a class="anchor" href="#examples"></a>Examples</h2> + <pre class="examples"><div class='input'> + <span class='no'>nafta_evaluation</span> <span class='kw'><-</span> <span class='fu'>nafta</span>(<span class='no'>NAFTA_SOP_Appendix_D</span>, <span class='kw'>cores</span> <span class='kw'>=</span> <span class='fl'>1</span>)</div><div class='output co'>#> <span class='message'>The SFO model is rejected as S_SFO is equal or higher than the critical value S_c</span></div><div class='output co'>#> <span class='message'>The representative half-life of the IORE model is longer than the one corresponding</span></div><div class='output co'>#> <span class='message'>to the terminal degradation rate found with the DFOP model.</span></div><div class='output co'>#> <span class='message'>The representative half-life obtained from the DFOP model may be used</span></div><div class='input'> <span class='fu'><a href='https://rdrr.io/r/base/print.html'>print</a></span>(<span class='no'>nafta_evaluation</span>)</div><div class='output co'>#> Sums of squares: +#> SFO IORE DFOP +#> 1378.6832 615.7730 517.8836 +#> +#> Critical sum of squares for checking the SFO model: +#> [1] 717.4598 +#> +#> Parameters: +#> $SFO +#> Estimate Pr(>t) Lower Upper +#> parent_0 83.7558 1.80e-14 77.18268 90.3288 +#> k_parent_sink 0.0017 7.43e-05 0.00112 0.0026 +#> sigma 8.7518 1.22e-05 5.64278 11.8608 +#> +#> $IORE +#> Estimate Pr(>t) Lower Upper +#> parent_0 9.69e+01 NA 8.88e+01 1.05e+02 +#> k__iore_parent_sink 8.40e-14 NA 1.79e-18 3.94e-09 +#> N_parent 6.68e+00 NA 4.19e+00 9.17e+00 +#> sigma 5.85e+00 NA 3.76e+00 7.94e+00 +#> +#> $DFOP +#> Estimate Pr(>t) Lower Upper +#> parent_0 9.76e+01 1.94e-13 9.02e+01 1.05e+02 +#> k1 4.24e-02 5.92e-03 2.03e-02 8.88e-02 +#> k2 8.24e-04 6.48e-03 3.89e-04 1.75e-03 +#> g 2.88e-01 2.47e-05 1.95e-01 4.03e-01 +#> sigma 5.36e+00 2.22e-05 3.43e+00 7.30e+00 +#> +#> +#> DTx values: +#> DT50 DT90 DT50_rep +#> SFO 407 1350 407 +#> IORE 541 5190000 1560000 +#> DFOP 429 2380 841 +#> +#> Representative half-life: +#> [1] 841.41</div><div class='input'> <span class='fu'><a href='https://rdrr.io/r/base/plot.html'>plot</a></span>(<span class='no'>nafta_evaluation</span>)</div><div class='img'><img src='nafta-1.png' alt='' width='700' height='433' /></div><div class='input'> +</div></pre> + </div> + <div class="col-md-3 hidden-xs hidden-sm" id="pkgdown-sidebar"> + <nav id="toc" data-toggle="toc" class="sticky-top"> + <h2 data-toc-skip>Contents</h2> + </nav> + </div> +</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> 1.5.1.</p> +</div> + + </footer> + </div> + + + + + </body> +</html> + + |