data structure at the moment contains:</p>
<ul class="simple">
<li>the geometry profile of the branch as <code class="docutils literal notranslate"><span class="pre">ppl.data[variable_index][0]</span></code></li>
<li>the selected profile at the timestep 0 as
<code class="docutils literal notranslate"><span class="pre">ppl.data[variable_index][1][0]</span></code></li>
<li>the selected profile at the last timestep as
<code class="docutils literal notranslate"><span class="pre">ppl.data[variable_index][1][-1]<