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href="https://github.com/jranke/mkin/"> <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>Hockey-Stick kinetics</h1> <small class="dont-index">Source: <a href='https://github.com/jranke/mkin/blob/master/R/parent_solutions.R'><code>R/parent_solutions.R</code></a></small> <div class="hidden name"><code>HS.solution.Rd</code></div> </div> <div class="ref-description"> <p>Function describing two exponential decline functions with a break point between them.</p> </div> <pre class="usage"><span class='fu'>HS.solution</span><span class='op'>(</span><span class='va'>t</span>, <span class='va'>parent_0</span>, <span class='va'>k1</span>, <span class='va'>k2</span>, <span class='va'>tb</span><span class='op'>)</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>t</th> <td><p>Time.</p></td> </tr> <tr> <th>parent_0</th> <td><p>Starting value for the response variable at time zero.</p></td> </tr> <tr> <th>k1</th> <td><p>First kinetic constant.</p></td> </tr> <tr> <th>k2</th> <td><p>Second kinetic constant.</p></td> </tr> <tr> <th>tb</th> <td><p>Break point. Before this time, exponential decline according to <code>k1</code> is calculated, after this time, exponential decline proceeds according to <code>k2</code>.</p></td> </tr> </table> <h2 class="hasAnchor" id="value"><a class="anchor" href="#value"></a>Value</h2> <p>The value of the response variable at time <code>t</code>.</p> <h2 class="hasAnchor" id="references"><a class="anchor" href="#references"></a>References</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'>http://esdac.jrc.ec.europa.eu/projects/degradation-kinetics</a> FOCUS (2014) “Generic guidance for Estimating Persistence and Degradation Kinetics from Environmental Fate Studies on Pesticides in EU Registration” Report of the FOCUS Work Group on Degradation Kinetics, Version 1.1, 18 December 2014 <a href='http://esdac.jrc.ec.europa.eu/projects/degradation-kinetics'>http://esdac.jrc.ec.europa.eu/projects/degradation-kinetics</a></p> <h2 class="hasAnchor" id="see-also"><a class="anchor" href="#see-also"></a>See also</h2> <div class='dont-index'><p>Other parent solutions: <code><a href='DFOP.solution.html'>DFOP.solution</a>()</code>, <code><a href='FOMC.solution.html'>FOMC.solution</a>()</code>, <code><a href='IORE.solution.html'>IORE.solution</a>()</code>, <code><a href='SFO.solution.html'>SFO.solution</a>()</code>, <code><a href='SFORB.solution.html'>SFORB.solution</a>()</code>, <code><a href='logistic.solution.html'>logistic.solution</a>()</code></p></div> <h2 class="hasAnchor" id="examples"><a class="anchor" href="#examples"></a>Examples</h2> <pre class="examples"><div class='input'> <span class='fu'><a href='https://rdrr.io/r/graphics/plot.default.html'>plot</a></span><span class='op'>(</span><span class='kw'>function</span><span class='op'>(</span><span class='va'>x</span><span class='op'>)</span> <span class='fu'>HS.solution</span><span class='op'>(</span><span class='va'>x</span>, <span class='fl'>100</span>, <span class='fl'>2</span>, <span class='fl'>0.3</span>, <span class='fl'>0.5</span><span class='op'>)</span>, <span class='fl'>0</span>, <span class='fl'>2</span>, ylim<span class='op'>=</span><span class='fu'><a href='https://rdrr.io/r/base/c.html'>c</a></span><span class='op'>(</span><span class='fl'>0</span>,<span class='fl'>100</span><span class='op'>)</span><span class='op'>)</span> </div><div class='img'><img src='HS.solution-1.png' alt='' width='700' height='433' /></div><div class='input'> </div></pre> </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"> <p>Developed by Johannes Ranke.</p> </div> <div class="pkgdown"> <p>Site built with <a href="https://pkgdown.r-lib.org/">pkgdown</a> 1.6.1.</p> </div> </footer> </div> </body> </html>