|
|
<!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, shrink-to-fit=no"><title>The maximum time weighted average concentration for a moving window — max_twa • pfm</title><script src="../deps/jquery-3.6.0/jquery-3.6.0.min.js"></script><meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no"><link href="../deps/bootstrap-5.3.1/bootstrap.min.css" rel="stylesheet"><script src="../deps/bootstrap-5.3.1/bootstrap.bundle.min.js"></script><!-- pkgdown --><script src="../pkgdown.js"></script><meta property="og:title" content="The maximum time weighted average concentration for a moving window — max_twa"><meta name="description" content="If you generate your time series using sawtooth,
you need to make sure that the length of the time series allows
for finding the maximum. It is therefore recommended to check this using
plot.one_box using the window size for the argument
max_twa."><meta property="og:description" content="If you generate your time series using sawtooth,
you need to make sure that the length of the time series allows
for finding the maximum. It is therefore recommended to check this using
plot.one_box using the window size for the argument
max_twa."></head><body>
<a href="#main" class="visually-hidden-focusable">Skip to contents</a>
<nav class="navbar navbar-expand-lg fixed-top bg-light" data-bs-theme="light" aria-label="Site navigation"><div class="container">
<a class="navbar-brand me-2" href="../index.html">pfm</a>
<small class="nav-text text-muted me-auto" data-bs-toggle="tooltip" data-bs-placement="bottom" title="">0.6.3</small>
<button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbar" aria-controls="navbar" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div id="navbar" class="collapse navbar-collapse ms-3">
<ul class="navbar-nav me-auto"><li class="active nav-item"><a class="nav-link" href="../reference/index.html">Reference</a></li>
<li class="nav-item"><a class="nav-link" href="../news/index.html">Changelog</a></li>
</ul><ul class="navbar-nav"><li class="nav-item"><form class="form-inline" role="search">
<input class="form-control" type="search" name="search-input" id="search-input" autocomplete="off" aria-label="Search site" placeholder="Search for" data-search-index="../search.json"></form></li>
<li class="nav-item"><a class="external-link nav-link" href="https://github.com/jranke/pfm/" aria-label="GitHub"><span class="fa fab fa-github fa-lg"></span></a></li>
</ul></div>
</div>
</nav><div class="container template-reference-topic">
<div class="row">
<main id="main" class="col-md-9"><div class="page-header">
<h1>The maximum time weighted average concentration for a moving window</h1>
<small class="dont-index">Source: <a href="https://github.com/jranke/pfm/blob/HEAD/R/twa.R" class="external-link"><code>R/twa.R</code></a></small>
<div class="d-none name"><code>max_twa.Rd</code></div>
</div>
<div class="ref-description section level2">
<p>If you generate your time series using <code><a href="sawtooth.html">sawtooth</a></code>,
you need to make sure that the length of the time series allows
for finding the maximum. It is therefore recommended to check this using
<code><a href="plot.one_box.html">plot.one_box</a></code> using the window size for the argument
<code>max_twa</code>.</p>
</div>
<div class="section level2">
<h2 id="ref-usage">Usage<a class="anchor" aria-label="anchor" href="#ref-usage"></a></h2>
<div class="sourceCode"><pre class="sourceCode r"><code><span><span class="fu">max_twa</span><span class="op">(</span><span class="va">x</span>, window <span class="op">=</span> <span class="fl">21</span><span class="op">)</span></span></code></pre></div>
</div>
<div class="section level2">
<h2 id="arguments">Arguments<a class="anchor" aria-label="anchor" href="#arguments"></a></h2>
<dl><dt id="arg-x">x<a class="anchor" aria-label="anchor" href="#arg-x"></a></dt>
<dd><p>An object of type <code><a href="one_box.html">one_box</a></code></p></dd>
<dt id="arg-window">window<a class="anchor" aria-label="anchor" href="#arg-window"></a></dt>
<dd><p>The size of the moving window</p></dd>
</dl></div>
<div class="section level2">
<h2 id="details">Details<a class="anchor" aria-label="anchor" href="#details"></a></h2>
<p>The method working directly on fitted <code><a href="https://pkgdown.jrwb.de/mkin/reference/mkinfit.html" class="external-link">mkinfit</a></code> objects uses the
equations given in the PEC soil section of the FOCUS guidance and is restricted
SFO, FOMC and DFOP models and to the parent compound</p>
</div>
<div class="section level2">
<h2 id="references">References<a class="anchor" aria-label="anchor" href="#references"></a></h2>
<p>FOCUS (2006) “Guidance Document on Estimating Persistence and
Degradation Kinetics from Environmental Fate Studies on Pesticides in EU
Registration” Report of the FOCUS Work Group on Degradation Kinetics,
EC Document Reference Sanco/10058/2005 version 2.0, 434 pp,
<a href="http://esdac.jrc.ec.europa.eu/projects/degradation-kinetics" class="external-link">http://esdac.jrc.ec.europa.eu/projects/degradation-kinetics</a></p>
</div>
<div class="section level2">
<h2 id="see-also">See also<a class="anchor" aria-label="anchor" href="#see-also"></a></h2>
<div class="dont-index"><p><code><a href="twa.html">twa</a></code></p></div>
</div>
<div class="section level2">
<h2 id="ref-examples">Examples<a class="anchor" aria-label="anchor" href="#ref-examples"></a></h2>
<div class="sourceCode"><pre class="sourceCode r"><code><span class="r-in"><span><span class="va">pred</span> <span class="op"><-</span> <span class="fu"><a href="sawtooth.html">sawtooth</a></span><span class="op">(</span><span class="fu"><a href="one_box.html">one_box</a></span><span class="op">(</span><span class="fl">10</span><span class="op">)</span>,</span></span>
<span class="r-in"><span> applications <span class="op">=</span> <span class="fu"><a href="https://rdrr.io/r/base/data.frame.html" class="external-link">data.frame</a></span><span class="op">(</span>time <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">0</span>, <span class="fl">7</span><span class="op">)</span>, amount <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">1</span>, <span class="fl">1</span><span class="op">)</span><span class="op">)</span><span class="op">)</span></span></span>
<span class="r-in"><span><span class="fu">max_twa</span><span class="op">(</span><span class="va">pred</span><span class="op">)</span></span></span>
<span class="r-out co"><span class="r-pr">#></span> $max</span>
<span class="r-out co"><span class="r-pr">#></span> parent </span>
<span class="r-out co"><span class="r-pr">#></span> 0.9537545 </span>
<span class="r-out co"><span class="r-pr">#></span> </span>
<span class="r-out co"><span class="r-pr">#></span> $window_start</span>
<span class="r-out co"><span class="r-pr">#></span> parent </span>
<span class="r-out co"><span class="r-pr">#></span> 0 </span>
<span class="r-out co"><span class="r-pr">#></span> </span>
<span class="r-out co"><span class="r-pr">#></span> $window_end</span>
<span class="r-out co"><span class="r-pr">#></span> parent </span>
<span class="r-out co"><span class="r-pr">#></span> 21 </span>
<span class="r-out co"><span class="r-pr">#></span> </span>
<span class="r-in"><span><span class="va">pred_FOMC</span> <span class="op"><-</span> <span class="fu"><a href="https://pkgdown.jrwb.de/mkin/reference/mkinfit.html" class="external-link">mkinfit</a></span><span class="op">(</span><span class="st">"FOMC"</span>, <span class="va">FOCUS_2006_C</span>, quiet <span class="op">=</span> <span class="cn">TRUE</span><span class="op">)</span></span></span>
<span class="r-in"><span><span class="fu">max_twa</span><span class="op">(</span><span class="va">pred_FOMC</span><span class="op">)</span></span></span>
<span class="r-out co"><span class="r-pr">#></span> 21 </span>
<span class="r-out co"><span class="r-pr">#></span> 18.22124 </span>
</code></pre></div>
</div>
</main><aside class="col-md-3"><nav id="toc" aria-label="Table of contents"><h2>On this page</h2>
</nav></aside></div>
<footer><div class="pkgdown-footer-left">
<p>Developed by Johannes Ranke.</p>
</div>
<div class="pkgdown-footer-right">
<p>Site built with <a href="https://pkgdown.r-lib.org/" class="external-link">pkgdown</a> 2.1.0.</p>
</div>
</footer></div>
</body></html>
|
