n>
<span class="r-in"><span>  <span class="fu"><a href="hplm.html">hplm</a></span><span class="op">(</span><span class="op">)</span></span></span>
<span class="r-out co"><span class="r-pr">#&gt;</span> Hierarchical Piecewise Linear Regression</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> Estimation method ML </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> Contrast model: W / level: first, slope: first</span>
<span 