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Values between -lod and loq are set to their mean value if an loq is specified. -If 'time_zero' is set to TRUE, the residue series is assumed to start with time -zero, and non-detects at time zero are set to 'time_zero_nd_value'. For the -set_nd_focus variant, this is zero, otherwise this argument has NA as default -value. -If stopping after the first non-detection is requested, as in in the FOCUS -variant of the function, an loq has to be specified in order to decide -if any later detections are above the loq." /> -<meta name="twitter:card" content="summary" /> - - - -<!-- mathjax --> -<script src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/MathJax.js" integrity="sha256-nvJJv9wWKEm88qvoQl9ekL2J+k/RWIsaSScxxlsrv8k=" crossorigin="anonymous"></script> -<script src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/config/TeX-AMS-MML_HTMLorMML.js" integrity="sha256-84DKXVJXs0/F8OTMzX4UR909+jtl4G7SPypPavF+GfA=" crossorigin="anonymous"></script> - -<!--[if lt IE 9]> -<script src="https://oss.maxcdn.com/html5shiv/3.7.3/html5shiv.min.js"></script> -<script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script> -<![endif]--> - - - - </head> - - <body> - <div class="container template-reference-topic"> - <header> - <div class="navbar navbar-default navbar-fixed-top" role="navigation"> - <div class="container"> - <div class="navbar-header"> - <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar" aria-expanded="false"> - <span class="sr-only">Toggle navigation</span> - <span class="icon-bar"></span> - <span class="icon-bar"></span> - <span class="icon-bar"></span> - </button> - <span class="navbar-brand"> - <a class="navbar-link" href="../index.html">pfm</a> - <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="Released version">0.5.7</span> - </span> - </div> - - <div id="navbar" class="navbar-collapse collapse"> - <ul class="nav navbar-nav"> - <li> - <a href="../index.html"> - <span class="fas fa fas fa-home fa-lg"></span> - - </a> -</li> -<li> - <a href="../reference/index.html">Reference</a> -</li> - </ul> - - <ul class="nav navbar-nav navbar-right"> - - </ul> - - </div><!--/.nav-collapse --> - </div><!--/.container --> -</div><!--/.navbar --> - - - - </header> - -<div class="row"> - <div class="col-md-9 contents"> - <div class="page-header"> - <h1>Set non-detects in residue series without replicates</h1> - - <div class="hidden name"><code>set_nd.Rd</code></div> - </div> - - <div class="ref-description"> - - <p>Sets non-detects directly before or directly after detects to NA. Values between -lod and loq are set to their mean value if an loq is specified. -If 'time_zero' is set to TRUE, the residue series is assumed to start with time -zero, and non-detects at time zero are set to 'time_zero_nd_value'. For the -set_nd_focus variant, this is zero, otherwise this argument has NA as default -value. -If stopping after the first non-detection is requested, as in in the FOCUS -variant of the function, an loq has to be specified in order to decide -if any later detections are above the loq.</p> - - </div> - - <pre class="usage"><span class='fu'>set_nd</span>(<span class='no'>r</span>, <span class='no'>lod</span>, <span class='kw'>loq</span> <span class='kw'>=</span> <span class='fl'>NA</span>, <span class='kw'>time_zero</span> <span class='kw'>=</span> <span class='fl'>TRUE</span>, <span class='kw'>time_zero_nd_value</span> <span class='kw'>=</span> <span class='fl'>NA</span>, - <span class='kw'>stop_after_first_nondetect</span> <span class='kw'>=</span> <span class='fl'>FALSE</span>) - -<span class='fu'>set_nd_focus</span>(<span class='no'>r</span>, <span class='no'>lod</span>, <span class='kw'>loq</span> <span class='kw'>=</span> <span class='fl'>NA</span>, <span class='kw'>time_zero</span> <span class='kw'>=</span> <span class='fl'>TRUE</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>r</th> - <td><p>A character vector of sequential residues without replicates, with -non-detects specified as 'nd' and unquantified values above the limit of -detection specified as 'nq', otherwise coercible to numeric</p></td> - </tr> - <tr> - <th>lod</th> - <td><p>Limit of detection (numeric)</p></td> - </tr> - <tr> - <th>loq</th> - <td><p>Limit of quantification(numeric). Must be specified if the FOCUS rule to -stop after the first non-detection is to be applied</p></td> - </tr> - <tr> - <th>time_zero</th> - <td><p>Is the first value in the series a time zero value?</p></td> - </tr> - <tr> - <th>time_zero_nd_value</th> - <td><p>Which value should we use for non-detects or zero values at time zero?</p></td> - </tr> - <tr> - <th>stop_after_first_nondetect</th> - <td><p>Should we really stop after the first non-detection?</p></td> - </tr> - </table> - - <h2 class="hasAnchor" id="functions"><a class="anchor" href="#functions"></a>Functions</h2> - - -<ul> -<li><p><code>set_nd</code>: Set non-detects in residues series</p></li> -<li><p><code>set_nd_focus</code>: Set non-detects in residues series according to FOCUS rules</p></li> -</ul> - - <h2 class="hasAnchor" id="references"><a class="anchor" href="#references"></a>References</h2> - - <p>FOCUS (2014) Generic Guidance for Estimating Persistence and Degradation - Kinetics from Environmental Fate Studies on Pesticides in EU Registration, Version 1.1, - 18 December 2014, p. 251</p> - - - <h2 class="hasAnchor" id="examples"><a class="anchor" href="#examples"></a>Examples</h2> - <pre class="examples"><div class='input'><span class='co'># FOCUS (2014) p. 75/76 and 131/132</span> -<span class='no'>parent_1</span> <span class='kw'><-</span> <span class='fu'><a href='https://rdrr.io/r/base/c.html'>c</a></span>(<span class='fl'>.12</span>, <span class='fl'>.09</span>, <span class='fl'>.05</span>, <span class='fl'>.03</span>, <span class='st'>"nd"</span>, <span class='st'>"nd"</span>, <span class='st'>"nd"</span>, <span class='st'>"nd"</span>, <span class='st'>"nd"</span>, <span class='st'>"nd"</span>) -<span class='fu'>set_nd</span>(<span class='no'>parent_1</span>, <span class='fl'>0.02</span>)</div><div class='output co'>#> [1] 0.12 0.09 0.05 0.03 0.01 NA NA NA NA NA</div><div class='input'><span class='no'>parent_2</span> <span class='kw'><-</span> <span class='fu'><a href='https://rdrr.io/r/base/c.html'>c</a></span>(<span class='fl'>.12</span>, <span class='fl'>.09</span>, <span class='fl'>.05</span>, <span class='fl'>.03</span>, <span class='st'>"nd"</span>, <span class='st'>"nd"</span>, <span class='fl'>.03</span>, <span class='st'>"nd"</span>, <span class='st'>"nd"</span>, <span class='st'>"nd"</span>) -<span class='fu'>set_nd</span>(<span class='no'>parent_2</span>, <span class='fl'>0.02</span>)</div><div class='output co'>#> [1] 0.12 0.09 0.05 0.03 0.01 0.01 0.03 0.01 NA NA</div><div class='input'><span class='fu'>set_nd_focus</span>(<span class='no'>parent_2</span>, <span class='fl'>0.02</span>, <span class='kw'>loq</span> <span class='kw'>=</span> <span class='fl'>0.05</span>)</div><div class='output co'>#> [1] 0.12 0.09 0.05 0.03 0.01 NA NA NA NA NA</div><div class='input'><span class='no'>parent_3</span> <span class='kw'><-</span> <span class='fu'><a href='https://rdrr.io/r/base/c.html'>c</a></span>(<span class='fl'>.12</span>, <span class='fl'>.09</span>, <span class='fl'>.05</span>, <span class='fl'>.03</span>, <span class='st'>"nd"</span>, <span class='st'>"nd"</span>, <span class='fl'>.06</span>, <span class='st'>"nd"</span>, <span class='st'>"nd"</span>, <span class='st'>"nd"</span>) -<span class='fu'>set_nd</span>(<span class='no'>parent_3</span>, <span class='fl'>0.02</span>)</div><div class='output co'>#> [1] 0.12 0.09 0.05 0.03 0.01 0.01 0.06 0.01 NA NA</div><div class='input'><span class='fu'>set_nd_focus</span>(<span class='no'>parent_3</span>, <span class='fl'>0.02</span>, <span class='kw'>loq</span> <span class='kw'>=</span> <span class='fl'>0.05</span>)</div><div class='output co'>#> [1] 0.12 0.09 0.05 0.03 0.01 0.01 0.06 0.01 NA NA</div><div class='input'><span class='no'>metabolite</span> <span class='kw'><-</span> <span class='fu'><a href='https://rdrr.io/r/base/c.html'>c</a></span>(<span class='st'>"nd"</span>, <span class='st'>"nd"</span>, <span class='st'>"nd"</span>, <span class='fl'>0.03</span>, <span class='fl'>0.06</span>, <span class='fl'>0.10</span>, <span class='fl'>0.11</span>, <span class='fl'>0.10</span>, <span class='fl'>0.09</span>, <span class='fl'>0.05</span>, <span class='fl'>0.03</span>, <span class='st'>"nd"</span>, <span class='st'>"nd"</span>) -<span class='fu'>set_nd</span>(<span class='no'>metabolite</span>, <span class='fl'>0.02</span>)</div><div class='output co'>#> [1] NA NA 0.01 0.03 0.06 0.10 0.11 0.10 0.09 0.05 0.03 0.01 NA</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="#functions">Functions</a></li> - - <li><a href="#references">References</a></li> - - <li><a href="#examples">Examples</a></li> - </ul> - - </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> 1.4.1.</p> -</div> - - </footer> - </div> - - - - - </body> -</html> - - |