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<meta property="og:description" content="R6 class objects of class chent represent chemical entities
and can hold a list of information loaded from a chemical yaml file in their
chyaml field. Such information is extracted and optionally aggregated by
this function." />
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<h1>Retrieve endpoint information from the chyaml field of a chent object</h1>
<small class="dont-index">Source: <a href='https://github.com/jranke/pfm/blob/master/R/endpoint.R'><code>R/endpoint.R</code></a></small>
<div class="hidden name"><code>endpoint.Rd</code></div>
</div>
<div class="ref-description">
<p>R6 class objects of class chent represent chemical entities
and can hold a list of information loaded from a chemical yaml file in their
chyaml field. Such information is extracted and optionally aggregated by
this function.</p>
</div>
<pre class="usage"><span class='fu'>endpoint</span>(<span class='no'>chent</span>, <span class='kw'>medium</span> <span class='kw'>=</span> <span class='st'>"soil"</span>, <span class='kw'>type</span> <span class='kw'>=</span> <span class='fu'>c</span>(<span class='st'>"degradation"</span>, <span class='st'>"sorption"</span>),
<span class='kw'>lab_field</span> <span class='kw'>=</span> <span class='fu'>c</span>(<span class='fl'>NA</span>, <span class='st'>"laboratory"</span>, <span class='st'>"field"</span>), <span class='kw'>redox</span> <span class='kw'>=</span> <span class='fu'>c</span>(<span class='fl'>NA</span>, <span class='st'>"aerobic"</span>,
<span class='st'>"anaerobic"</span>), <span class='kw'>value</span> <span class='kw'>=</span> <span class='fu'>c</span>(<span class='st'>"DT50ref"</span>, <span class='st'>"Kfoc"</span>, <span class='st'>"N"</span>), <span class='kw'>aggregator</span> <span class='kw'>=</span> <span class='no'>geomean</span>,
<span class='kw'>raw</span> <span class='kw'>=</span> <span class='fl'>FALSE</span>, <span class='kw'>signif</span> <span class='kw'>=</span> <span class='fl'>3</span>)
<span class='fu'>soil_DT50</span>(<span class='no'>chent</span>, <span class='kw'>aggregator</span> <span class='kw'>=</span> <span class='no'>geomean</span>, <span class='kw'>signif</span> <span class='kw'>=</span> <span class='fl'>3</span>,
<span class='kw'>lab_field</span> <span class='kw'>=</span> <span class='st'>"laboratory"</span>, <span class='kw'>value</span> <span class='kw'>=</span> <span class='st'>"DT50ref"</span>, <span class='kw'>redox</span> <span class='kw'>=</span> <span class='st'>"aerobic"</span>,
<span class='kw'>raw</span> <span class='kw'>=</span> <span class='fl'>FALSE</span>)
<span class='fu'>soil_Kfoc</span>(<span class='no'>chent</span>, <span class='kw'>aggregator</span> <span class='kw'>=</span> <span class='no'>geomean</span>, <span class='kw'>signif</span> <span class='kw'>=</span> <span class='fl'>3</span>, <span class='kw'>value</span> <span class='kw'>=</span> <span class='st'>"Kfoc"</span>,
<span class='kw'>raw</span> <span class='kw'>=</span> <span class='fl'>FALSE</span>)
<span class='fu'>soil_N</span>(<span class='no'>chent</span>, <span class='kw'>aggregator</span> <span class='kw'>=</span> <span class='no'>mean</span>, <span class='kw'>signif</span> <span class='kw'>=</span> <span class='fl'>3</span>, <span class='kw'>raw</span> <span class='kw'>=</span> <span class='fl'>FALSE</span>)
<span class='fu'>soil_sorption</span>(<span class='no'>chent</span>, <span class='kw'>values</span> <span class='kw'>=</span> <span class='fu'>c</span>(<span class='st'>"Kfoc"</span>, <span class='st'>"N"</span>), <span class='kw'>aggregators</span> <span class='kw'>=</span> <span class='fu'>c</span>(<span class='kw'>Kfoc</span> <span class='kw'>=</span>
<span class='no'>geomean</span>, <span class='kw'>Koc</span> <span class='kw'>=</span> <span class='no'>geomean</span>, <span class='kw'>N</span> <span class='kw'>=</span> <span class='no'>mean</span>), <span class='kw'>signif</span> <span class='kw'>=</span> <span class='fu'>c</span>(<span class='kw'>Kfoc</span> <span class='kw'>=</span> <span class='fl'>3</span>, <span class='kw'>N</span> <span class='kw'>=</span> <span class='fl'>3</span>),
<span class='kw'>raw</span> <span class='kw'>=</span> <span class='fl'>FALSE</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>chent</th>
<td><p>The chent object to get the information from</p></td>
</tr>
<tr>
<th>medium</th>
<td><p>The medium for which information is sought</p></td>
</tr>
<tr>
<th>type</th>
<td><p>The information type</p></td>
</tr>
<tr>
<th>lab_field</th>
<td><p>If not NA, do we want laboratory or field endpoints</p></td>
</tr>
<tr>
<th>redox</th>
<td><p>If not NA, are we looking for aerobic or anaerobic data</p></td>
</tr>
<tr>
<th>value</th>
<td><p>The name of the value we want. The list given in the
usage section is not exclusive</p></td>
</tr>
<tr>
<th>aggregator</th>
<td><p>The aggregator function. Can be mean,
<code><a href='geomean.html'>geomean</a></code>, or identity, for example.</p></td>
</tr>
<tr>
<th>raw</th>
<td><p>Should the number(s) be returned as stored in the chent
object (could be a character value) to retain original information
about precision?</p></td>
</tr>
<tr>
<th>signif</th>
<td><p>How many significant digits do we want</p></td>
</tr>
<tr>
<th>values</th>
<td><p>The values to be returned</p></td>
</tr>
<tr>
<th>aggregators</th>
<td><p>A named vector of aggregator functions to be used</p></td>
</tr>
</table>
<h2 class="hasAnchor" id="value"><a class="anchor" href="#value"></a>Value</h2>
<p>The result from applying the aggregator function to
the values converted to a numeric vector, rounded to the
given number of significant digits, or, if raw = TRUE,
the values as a character value, retaining any implicit
information on precision that may be present.</p>
<h2 class="hasAnchor" id="details"><a class="anchor" href="#details"></a>Details</h2>
<p>The functions <code>soil_*</code> are functions to extract soil specific endpoints.
For the Freundlich exponent, the capital letter <code>N</code> is used in order to
facilitate dealing with such data in R. In pesticide fate modelling, this
exponent is often called 1/n.</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="#arguments">Arguments</a></li>
<li><a href="#value">Value</a></li>
<li><a href="#details">Details</a></li>
</ul>
</div>
</div>
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