<!DOCTYPE html> <!-- Generated by pkgdown: do not edit by hand --><html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="utf-8"><meta http-equiv="X-UA-Compatible" content="IE=edge"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>Set non-detects and unquantified values in residue series without replicates — set_nd_nq • mkin</title><!-- jquery --><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/3.4.1/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/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/2.0.6/clipboard.min.js" integrity="sha256-inc5kl9MA1hkeYUt+EC3BhlIgyp/2jDIyBLS6k3UxPI=" 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"><script src="../pkgdown.js"></script><meta property="og:title" content="Set non-detects and unquantified values in residue series without replicates — set_nd_nq"><meta property="og:description" content="This function automates replacing unquantified values in residue time and depth series. For time series, the function performs part of the residue processing proposed in the FOCUS kinetics guidance for parent compounds and metabolites. For two-dimensional residue series over time and depth, it automates the proposal of Boesten et al (2015)."><!-- 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 data-spy="scroll" data-target="#toc"> <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">mkin</a> <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="Released version">1.2.0</span> </span> </div> <div id="navbar" class="navbar-collapse collapse"> <ul class="nav navbar-nav"><li> <a href="../reference/index.html">Functions and data</a> </li> <li class="dropdown"> <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" data-bs-toggle="dropdown" aria-expanded="false"> Articles <span class="caret"></span> </a> <ul class="dropdown-menu" role="menu"><li> <a href="../articles/mkin.html">Introduction to mkin</a> </li> <li> <a href="../articles/FOCUS_D.html">Example evaluation of FOCUS Example Dataset D</a> </li> <li> <a href="../articles/FOCUS_L.html">Example evaluation of FOCUS Laboratory Data L1 to L3</a> </li> <li> <a href="../articles/web_only/dimethenamid_2018.html">Example evaluations of dimethenamid data from 2018 with nonlinear mixed-effects models</a> </li> <li> <a href="../articles/web_only/multistart.html">Short demo of the multistart method</a> </li> <li> <a href="../articles/web_only/compiled_models.html">Performance benefit by using compiled model definitions in mkin</a> </li> <li> <a href="../articles/web_only/FOCUS_Z.html">Example evaluation of FOCUS Example Dataset Z</a> </li> <li> <a href="../articles/twa.html">Calculation of time weighted average concentrations with mkin</a> </li> <li> <a href="../articles/web_only/NAFTA_examples.html">Example evaluation of NAFTA SOP Attachment examples</a> </li> <li> <a href="../articles/web_only/benchmarks.html">Benchmark timings for mkin</a> </li> <li> <a href="../articles/web_only/saem_benchmarks.html">Benchmark timings for saem.mmkin</a> </li> </ul></li> <li> <a href="../news/index.html">News</a> </li> </ul><ul class="nav navbar-nav navbar-right"><li> <a href="https://github.com/jranke/mkin/" class="external-link"> <span class="fab fa-github fa-lg"></span> </a> </li> </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 and unquantified values in residue series without replicates</h1> <small class="dont-index">Source: <a href="https://github.com/jranke/mkin/blob/HEAD/R/set_nd_nq.R" class="external-link"><code>R/set_nd_nq.R</code></a></small> <div class="hidden name"><code>set_nd_nq.Rd</code></div> </div> <div class="ref-description"> <p>This function automates replacing unquantified values in residue time and depth series. For time series, the function performs part of the residue processing proposed in the FOCUS kinetics guidance for parent compounds and metabolites. For two-dimensional residue series over time and depth, it automates the proposal of Boesten et al (2015).</p> </div> <div id="ref-usage"> <div class="sourceCode"><pre class="sourceCode r"><code><span><span class="fu">set_nd_nq</span><span class="op">(</span><span class="va">res_raw</span>, <span class="va">lod</span>, loq <span class="op">=</span> <span class="cn">NA</span>, time_zero_presence <span class="op">=</span> <span class="cn">FALSE</span><span class="op">)</span></span> <span></span> <span><span class="fu">set_nd_nq_focus</span><span class="op">(</span></span> <span> <span class="va">res_raw</span>,</span> <span> <span class="va">lod</span>,</span> <span> loq <span class="op">=</span> <span class="cn">NA</span>,</span> <span> set_first_sample_nd <span class="op">=</span> <span class="cn">TRUE</span>,</span> <span> first_sample_nd_value <span class="op">=</span> <span class="fl">0</span>,</span> <span> ignore_below_loq_after_first_nd <span class="op">=</span> <span class="cn">TRUE</span></span> <span><span class="op">)</span></span></code></pre></div> </div> <div id="arguments"> <h2>Arguments</h2> <dl><dt>res_raw</dt> <dd><p>Character vector of a residue time series, or matrix of residue values with rows representing depth profiles for a specific sampling time, and columns representing time series of residues at the same depth. Values below the limit of detection (lod) have to be coded as "nd", values between the limit of detection and the limit of quantification, if any, have to be coded as "nq". Samples not analysed have to be coded as "na". All values that are not "na", "nd" or "nq" have to be coercible to numeric</p></dd> <dt>lod</dt> <dd><p>Limit of detection (numeric)</p></dd> <dt>loq</dt> <dd><p>Limit of quantification(numeric). Must be specified if the FOCUS rule to stop after the first non-detection is to be applied</p></dd> <dt>time_zero_presence</dt> <dd><p>Do we assume that residues occur at time zero? This only affects samples from the first sampling time that have been reported as "nd" (not detected).</p></dd> <dt>set_first_sample_nd</dt> <dd><p>Should the first sample be set to "first_sample_nd_value" in case it is a non-detection?</p></dd> <dt>first_sample_nd_value</dt> <dd><p>Value to be used for the first sample if it is a non-detection</p></dd> <dt>ignore_below_loq_after_first_nd</dt> <dd><p>Should we ignore values below the LOQ after the first non-detection that occurs after the quantified values?</p></dd> </dl></div> <div id="value"> <h2>Value</h2> <p>A numeric vector, if a vector was supplied, or a numeric matrix otherwise</p> </div> <div id="functions"> <h2>Functions</h2> <ul><li><p><code>set_nd_nq_focus()</code>: Set non-detects in residue time series according to FOCUS rules</p></li> </ul></div> <div id="references"> <h2>References</h2> <p>Boesten, J. J. T. I., van der Linden, A. M. A., Beltman, W. H. J. and Pol, J. W. (2015). Leaching of plant protection products and their transformation products; Proposals for improving the assessment of leaching to groundwater in the Netherlands — Version 2. Alterra report 2630, Alterra Wageningen UR (University & Research centre)</p> <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> </div> <div id="ref-examples"> <h2>Examples</h2> <div class="sourceCode"><pre class="sourceCode r"><code><span class="r-in"><span><span class="co"># FOCUS (2014) p. 75/76 and 131/132</span></span></span> <span class="r-in"><span><span class="va">parent_1</span> <span class="op"><-</span> <span class="fu"><a href="https://rdrr.io/r/base/c.html" class="external-link">c</a></span><span class="op">(</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="op">)</span></span></span> <span class="r-in"><span><span class="fu">set_nd_nq</span><span class="op">(</span><span class="va">parent_1</span>, <span class="fl">0.02</span><span class="op">)</span></span></span> <span class="r-out co"><span class="r-pr">#></span> [1] 0.12 0.09 0.05 0.03 0.01 NA NA NA NA NA</span> <span class="r-in"><span><span class="va">parent_2</span> <span class="op"><-</span> <span class="fu"><a href="https://rdrr.io/r/base/c.html" class="external-link">c</a></span><span class="op">(</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="op">)</span></span></span> <span class="r-in"><span><span class="fu">set_nd_nq</span><span class="op">(</span><span class="va">parent_2</span>, <span class="fl">0.02</span><span class="op">)</span></span></span> <span class="r-out co"><span class="r-pr">#></span> [1] 0.12 0.09 0.05 0.03 0.01 0.01 0.03 0.01 NA NA</span> <span class="r-in"><span><span class="fu">set_nd_nq_focus</span><span class="op">(</span><span class="va">parent_2</span>, <span class="fl">0.02</span>, loq <span class="op">=</span> <span class="fl">0.05</span><span class="op">)</span></span></span> <span class="r-out co"><span class="r-pr">#></span> [1] 0.12 0.09 0.05 0.03 0.01 NA NA NA NA NA</span> <span class="r-in"><span><span class="va">parent_3</span> <span class="op"><-</span> <span class="fu"><a href="https://rdrr.io/r/base/c.html" class="external-link">c</a></span><span class="op">(</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="op">)</span></span></span> <span class="r-in"><span><span class="fu">set_nd_nq</span><span class="op">(</span><span class="va">parent_3</span>, <span class="fl">0.02</span><span class="op">)</span></span></span> <span class="r-out co"><span class="r-pr">#></span> [1] 0.12 0.09 0.05 0.03 0.01 0.01 0.06 0.01 NA NA</span> <span class="r-in"><span><span class="fu">set_nd_nq_focus</span><span class="op">(</span><span class="va">parent_3</span>, <span class="fl">0.02</span>, loq <span class="op">=</span> <span class="fl">0.05</span><span class="op">)</span></span></span> <span class="r-out co"><span class="r-pr">#></span> [1] 0.12 0.09 0.05 0.03 0.01 0.01 0.06 0.01 NA NA</span> <span class="r-in"><span><span class="va">metabolite</span> <span class="op"><-</span> <span class="fu"><a href="https://rdrr.io/r/base/c.html" class="external-link">c</a></span><span class="op">(</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="op">)</span></span></span> <span class="r-in"><span><span class="fu">set_nd_nq</span><span class="op">(</span><span class="va">metabolite</span>, <span class="fl">0.02</span><span class="op">)</span></span></span> <span class="r-out co"><span class="r-pr">#></span> [1] NA NA 0.01 0.03 0.06 0.10 0.11 0.10 0.09 0.05 0.03 0.01 NA</span> <span class="r-in"><span><span class="fu">set_nd_nq_focus</span><span class="op">(</span><span class="va">metabolite</span>, <span class="fl">0.02</span>, <span class="fl">0.05</span><span class="op">)</span></span></span> <span class="r-out co"><span class="r-pr">#></span> [1] 0.00 NA 0.01 0.03 0.06 0.10 0.11 0.10 0.09 0.05 0.03 0.01 NA</span> <span class="r-in"><span><span class="co">#</span></span></span> <span class="r-in"><span><span class="co"># Boesten et al. (2015), p. 57/58</span></span></span> <span class="r-in"><span><span class="va">table_8</span> <span class="op"><-</span> <span class="fu"><a href="https://rdrr.io/r/base/matrix.html" class="external-link">matrix</a></span><span class="op">(</span></span></span> <span class="r-in"><span> <span class="fu"><a href="https://rdrr.io/r/base/c.html" class="external-link">c</a></span><span class="op">(</span><span class="fl">10</span>, <span class="fl">10</span>, <span class="fu"><a href="https://rdrr.io/r/base/rep.html" class="external-link">rep</a></span><span class="op">(</span><span class="st">"nd"</span>, <span class="fl">4</span><span class="op">)</span>,</span></span> <span class="r-in"><span> <span class="fl">10</span>, <span class="fl">10</span>, <span class="fu"><a href="https://rdrr.io/r/base/rep.html" class="external-link">rep</a></span><span class="op">(</span><span class="st">"nq"</span>, <span class="fl">2</span><span class="op">)</span>, <span class="fu"><a href="https://rdrr.io/r/base/rep.html" class="external-link">rep</a></span><span class="op">(</span><span class="st">"nd"</span>, <span class="fl">2</span><span class="op">)</span>,</span></span> <span class="r-in"><span> <span class="fl">10</span>, <span class="fl">10</span>, <span class="fl">10</span>, <span class="st">"nq"</span>, <span class="st">"nd"</span>, <span class="st">"nd"</span>,</span></span> <span class="r-in"><span> <span class="st">"nq"</span>, <span class="fl">10</span>, <span class="st">"nq"</span>, <span class="fu"><a href="https://rdrr.io/r/base/rep.html" class="external-link">rep</a></span><span class="op">(</span><span class="st">"nd"</span>, <span class="fl">3</span><span class="op">)</span>,</span></span> <span class="r-in"><span> <span class="st">"nd"</span>, <span class="st">"nq"</span>, <span class="st">"nq"</span>, <span class="fu"><a href="https://rdrr.io/r/base/rep.html" class="external-link">rep</a></span><span class="op">(</span><span class="st">"nd"</span>, <span class="fl">3</span><span class="op">)</span>,</span></span> <span class="r-in"><span> <span class="fu"><a href="https://rdrr.io/r/base/rep.html" class="external-link">rep</a></span><span class="op">(</span><span class="st">"nd"</span>, <span class="fl">6</span><span class="op">)</span>, <span class="fu"><a href="https://rdrr.io/r/base/rep.html" class="external-link">rep</a></span><span class="op">(</span><span class="st">"nd"</span>, <span class="fl">6</span><span class="op">)</span><span class="op">)</span>,</span></span> <span class="r-in"><span> ncol <span class="op">=</span> <span class="fl">6</span>, byrow <span class="op">=</span> <span class="cn">TRUE</span><span class="op">)</span></span></span> <span class="r-in"><span><span class="fu">set_nd_nq</span><span class="op">(</span><span class="va">table_8</span>, <span class="fl">0.5</span>, <span class="fl">1.5</span>, time_zero_presence <span class="op">=</span> <span class="cn">TRUE</span><span class="op">)</span></span></span> <span class="r-out co"><span class="r-pr">#></span> [,1] [,2] [,3] [,4] [,5] [,6]</span> <span class="r-out co"><span class="r-pr">#></span> [1,] 10.00 10.00 0.25 0.25 NA NA</span> <span class="r-out co"><span class="r-pr">#></span> [2,] 10.00 10.00 1.00 1.00 0.25 NA</span> <span class="r-out co"><span class="r-pr">#></span> [3,] 10.00 10.00 10.00 1.00 0.25 NA</span> <span class="r-out co"><span class="r-pr">#></span> [4,] 1.00 10.00 1.00 0.25 NA NA</span> <span class="r-out co"><span class="r-pr">#></span> [5,] 0.25 1.00 1.00 0.25 NA NA</span> <span class="r-out co"><span class="r-pr">#></span> [6,] NA 0.25 0.25 NA NA NA</span> <span class="r-out co"><span class="r-pr">#></span> [7,] NA NA NA NA NA NA</span> <span class="r-in"><span><span class="va">table_10</span> <span class="op"><-</span> <span class="fu"><a href="https://rdrr.io/r/base/matrix.html" class="external-link">matrix</a></span><span class="op">(</span></span></span> <span class="r-in"><span> <span class="fu"><a href="https://rdrr.io/r/base/c.html" class="external-link">c</a></span><span class="op">(</span><span class="fl">10</span>, <span class="fl">10</span>, <span class="fu"><a href="https://rdrr.io/r/base/rep.html" class="external-link">rep</a></span><span class="op">(</span><span class="st">"nd"</span>, <span class="fl">4</span><span class="op">)</span>,</span></span> <span class="r-in"><span> <span class="fl">10</span>, <span class="fl">10</span>, <span class="fu"><a href="https://rdrr.io/r/base/rep.html" class="external-link">rep</a></span><span class="op">(</span><span class="st">"nd"</span>, <span class="fl">4</span><span class="op">)</span>,</span></span> <span class="r-in"><span> <span class="fl">10</span>, <span class="fl">10</span>, <span class="fl">10</span>, <span class="fu"><a href="https://rdrr.io/r/base/rep.html" class="external-link">rep</a></span><span class="op">(</span><span class="st">"nd"</span>, <span class="fl">3</span><span class="op">)</span>,</span></span> <span class="r-in"><span> <span class="st">"nd"</span>, <span class="fl">10</span>, <span class="fu"><a href="https://rdrr.io/r/base/rep.html" class="external-link">rep</a></span><span class="op">(</span><span class="st">"nd"</span>, <span class="fl">4</span><span class="op">)</span>,</span></span> <span class="r-in"><span> <span class="fu"><a href="https://rdrr.io/r/base/rep.html" class="external-link">rep</a></span><span class="op">(</span><span class="st">"nd"</span>, <span class="fl">18</span><span class="op">)</span><span class="op">)</span>,</span></span> <span class="r-in"><span> ncol <span class="op">=</span> <span class="fl">6</span>, byrow <span class="op">=</span> <span class="cn">TRUE</span><span class="op">)</span></span></span> <span class="r-in"><span><span class="fu">set_nd_nq</span><span class="op">(</span><span class="va">table_10</span>, <span class="fl">0.5</span>, time_zero_presence <span class="op">=</span> <span class="cn">TRUE</span><span class="op">)</span></span></span> <span class="r-out co"><span class="r-pr">#></span> [,1] [,2] [,3] [,4] [,5] [,6]</span> <span class="r-out co"><span class="r-pr">#></span> [1,] 10.00 10.00 0.25 NA NA NA</span> <span class="r-out co"><span class="r-pr">#></span> [2,] 10.00 10.00 0.25 NA NA NA</span> <span class="r-out co"><span class="r-pr">#></span> [3,] 10.00 10.00 10.00 0.25 NA NA</span> <span class="r-out co"><span class="r-pr">#></span> [4,] 0.25 10.00 0.25 NA NA NA</span> <span class="r-out co"><span class="r-pr">#></span> [5,] NA 0.25 NA NA NA NA</span> <span class="r-out co"><span class="r-pr">#></span> [6,] NA NA NA NA NA NA</span> <span class="r-out co"><span class="r-pr">#></span> [7,] NA NA NA NA NA NA</span> </code></pre></div> </div> </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"> 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