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<h1>Calculate drift percentages based on Rautmann data</h1>
<small class="dont-index">Source: <a href="https://github.com/jranke/pfm/blob/HEAD/R/PEC_sw_drift.R" class="external-link"><code>R/PEC_sw_drift.R</code></a></small>
<div class="d-none name"><code>drift_percentages_rautmann.Rd</code></div>
</div>
<div class="ref-description section level2">
<p>Calculate drift percentages based on Rautmann data</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">drift_percentages_rautmann</span><span class="op">(</span></span>
<span> <span class="va">distances</span>,</span>
<span> applications <span class="op">=</span> <span class="fl">1</span>,</span>
<span> crop_group_focus <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">"arable"</span>, <span class="st">"hops"</span>, <span class="st">"vines, late"</span>, <span class="st">"vines, early"</span>, <span class="st">"fruit, late"</span>,</span>
<span> <span class="st">"fruit, early"</span>, <span class="st">"aerial"</span><span class="op">)</span>,</span>
<span> formula <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">"Rautmann"</span>, <span class="st">"FOCUS"</span><span class="op">)</span>,</span>
<span> widths <span class="op">=</span> <span class="fl">1</span></span>
<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-distances">distances<a class="anchor" aria-label="anchor" href="#arg-distances"></a></dt>
<dd><p>The distances in m for which to get PEC values</p></dd>
<dt id="arg-applications">applications<a class="anchor" aria-label="anchor" href="#arg-applications"></a></dt>
<dd><p>Number of applications for selection of drift percentile</p></dd>
<dt id="arg-crop-group-focus">crop_group_focus<a class="anchor" aria-label="anchor" href="#arg-crop-group-focus"></a></dt>
<dd><p>One of the crop groups as used in <a href="drift_parameters_focus.html">drift_parameters_focus</a></p></dd>
<dt id="arg-formula">formula<a class="anchor" aria-label="anchor" href="#arg-formula"></a></dt>
<dd><p>By default, the original Rautmann formula is used. If you
specify "FOCUS", mean drift input over the width of the water body is
calculated as described in Chapter 5.4.5 of the FOCUS surface water guidance</p></dd>
<dt id="arg-widths">widths<a class="anchor" aria-label="anchor" href="#arg-widths"></a></dt>
<dd><p>The widths of the water bodies (only used in the FOCUS formula)</p></dd>
</dl></div>
<div class="section level2">
<h2 id="references">References<a class="anchor" aria-label="anchor" href="#references"></a></h2>
<p>FOCUS (2014) Generic guidance for Surface Water Scenarios (version 1.4).
FOrum for the Co-ordination of pesticde fate models and their USe.
<a href="http://esdac.jrc.ec.europa.eu/public_path/projects_data/focus/sw/docs/Generic%20FOCUS_SWS_vc1.4.pdf" class="external-link">http://esdac.jrc.ec.europa.eu/public_path/projects_data/focus/sw/docs/Generic%20FOCUS_SWS_vc1.4.pdf</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><a href="drift_parameters_focus.html">drift_parameters_focus</a>, <a href="PEC_sw_drift.html">PEC_sw_drift</a></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="co"># Compare JKI data with Rautmann formula</span></span></span>
<span class="r-in"><span><span class="co"># One application on field crops, for 1 m, 3 m and 5 m distance</span></span></span>
<span class="r-in"><span><span class="va">drift_data_JKI</span><span class="op">[[</span><span class="fl">1</span><span class="op">]</span><span class="op">]</span><span class="op">[</span><span class="fu"><a href="https://rdrr.io/r/base/character.html" class="external-link">as.character</a></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">1</span>, <span class="fl">3</span>, <span class="fl">5</span><span class="op">)</span><span class="op">)</span>, <span class="st">"Ackerbau"</span><span class="op">]</span></span></span>
<span class="r-out co"><span class="r-pr">#></span> 1 3 5 </span>
<span class="r-out co"><span class="r-pr">#></span> 2.77 0.95 0.57 </span>
<span class="r-in"><span><span class="fu">drift_percentages_rautmann</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">1</span>, <span class="fl">3</span>, <span class="fl">5</span><span class="op">)</span><span class="op">)</span></span></span>
<span class="r-out co"><span class="r-pr">#></span> [1] 2.7593000 0.9424748 0.5719342</span>
<span class="r-in"><span><span class="fu">drift_percentages_rautmann</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">1</span>, <span class="fl">3</span>, <span class="fl">5</span><span class="op">)</span>, formula <span class="op">=</span> <span class="st">"FOCUS"</span><span class="op">)</span></span></span>
<span class="r-out co"><span class="r-pr">#></span> [1] 1.9273922 0.8160023 0.5224362</span>
<span class="r-in"><span></span></span>
<span class="r-in"><span><span class="co"># One application to early or late fruit crops</span></span></span>
<span class="r-in"><span><span class="va">drift_data_JKI</span><span class="op">[[</span><span class="fl">1</span><span class="op">]</span><span class="op">]</span><span class="op">[</span><span class="fu"><a href="https://rdrr.io/r/base/character.html" class="external-link">as.character</a></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">3</span>, <span class="fl">5</span>, <span class="fl">20</span>, <span class="fl">50</span><span class="op">)</span><span class="op">)</span>, <span class="st">"Obstbau frueh"</span><span class="op">]</span></span></span>
<span class="r-out co"><span class="r-pr">#></span> 3 5 20 50 </span>
<span class="r-out co"><span class="r-pr">#></span> 29.20 19.89 2.77 0.30 </span>
<span class="r-in"><span><span class="fu">drift_percentages_rautmann</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">3</span>, <span class="fl">5</span>, <span class="fl">20</span>, <span class="fl">50</span><span class="op">)</span>, crop_group <span class="op">=</span> <span class="st">"fruit, early"</span><span class="op">)</span></span></span>
<span class="r-out co"><span class="r-pr">#></span> [1] 29.1973659 19.8844422 2.7618138 0.3012008</span>
<span class="r-in"><span><span class="fu">drift_percentages_rautmann</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">3</span>, <span class="fl">5</span>, <span class="fl">20</span>, <span class="fl">50</span><span class="op">)</span>, crop_group <span class="op">=</span> <span class="st">"fruit, early"</span>,</span></span>
<span class="r-in"><span> formula <span class="op">=</span> <span class="st">"FOCUS"</span><span class="op">)</span></span></span>
<span class="r-out co"><span class="r-pr">#></span> [1] 26.1193421 18.5428680 2.6038558 0.2940792</span>
<span class="r-in"><span><span class="va">drift_data_JKI</span><span class="op">[[</span><span class="fl">1</span><span class="op">]</span><span class="op">]</span><span class="op">[</span><span class="fu"><a href="https://rdrr.io/r/base/character.html" class="external-link">as.character</a></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">3</span>, <span class="fl">5</span>, <span class="fl">20</span>, <span class="fl">50</span><span class="op">)</span><span class="op">)</span>, <span class="st">"Obstbau spaet"</span><span class="op">]</span></span></span>
<span class="r-out co"><span class="r-pr">#></span> 3 5 20 50 </span>
<span class="r-out co"><span class="r-pr">#></span> 15.73 8.41 1.09 0.22 </span>
<span class="r-in"><span><span class="fu">drift_percentages_rautmann</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">3</span>, <span class="fl">5</span>, <span class="fl">20</span>, <span class="fl">50</span><span class="op">)</span>, crop_group <span class="op">=</span> <span class="st">"fruit, late"</span><span class="op">)</span></span></span>
<span class="r-out co"><span class="r-pr">#></span> [1] 15.7246994 8.4108487 1.0813887 0.2155992</span>
<span class="r-in"><span><span class="fu">drift_percentages_rautmann</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">3</span>, <span class="fl">5</span>, <span class="fl">20</span>, <span class="fl">50</span><span class="op">)</span>, crop_group <span class="op">=</span> <span class="st">"fruit, late"</span>,</span></span>
<span class="r-in"><span> formula <span class="op">=</span> <span class="st">"FOCUS"</span><span class="op">)</span></span></span>
<span class="r-out co"><span class="r-pr">#></span> [1] 13.1414350 7.5123244 1.0359007 0.2118734</span>
<span class="r-in"><span></span></span>
<span class="r-in"><span><span class="co"># We get a continuum if the waterbody covers the hinge distance</span></span></span>
<span class="r-in"><span><span class="co"># (11.4 m for 1 early app to fruit)</span></span></span>
<span class="r-in"><span><span class="va">x</span> <span class="op"><-</span> <span class="fu"><a href="https://rdrr.io/r/base/seq.html" class="external-link">seq</a></span><span class="op">(</span><span class="fl">3</span>, <span class="fl">30</span>, by <span class="op">=</span> <span class="fl">0.1</span><span class="op">)</span></span></span>
<span class="r-in"><span><span class="va">d</span> <span class="op"><-</span> <span class="fu">drift_percentages_rautmann</span><span class="op">(</span><span class="va">x</span>, crop_group <span class="op">=</span> <span class="st">"fruit, early"</span>, formula <span class="op">=</span> <span class="st">"FOCUS"</span><span class="op">)</span></span></span>
<span class="r-in"><span><span class="fu"><a href="https://rdrr.io/r/graphics/plot.default.html" class="external-link">plot</a></span><span class="op">(</span><span class="va">x</span>, <span class="va">d</span>, type <span class="op">=</span> <span class="st">"l"</span>,</span></span>
<span class="r-in"><span> xlab <span class="op">=</span> <span class="st">"Distance of near edge [m]"</span>, </span></span>
<span class="r-in"><span> ylab <span class="op">=</span> <span class="st">"Mean drift percentage over waterbody width"</span>,</span></span>
<span class="r-in"><span> main <span class="op">=</span> <span class="st">"One application to fruit, early"</span><span class="op">)</span></span></span>
<span class="r-in"><span><span class="fu"><a href="https://rdrr.io/r/graphics/abline.html" class="external-link">abline</a></span><span class="op">(</span>v <span class="op">=</span> <span class="fl">11.4</span>, lty <span class="op">=</span> <span class="fl">2</span><span class="op">)</span></span></span>
<span class="r-plt img"><img src="drift_percentages_rautmann-1.png" alt="" width="700" height="433"></span>
</code></pre></div>
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