/c.html" class="external-link">c</a></span><span class="op">(</span><span class="st">"date"</span>, <span class="st">"channelGrouping"</span><span class="op">)</span>, </span>
<span>                   max <span class="op">=</span> <span class="op">-</span><span class="fl">1</span><span class="op">)</span></span>
<span><span class="op">}</span></span></code></pre></div>
<p>The modelling step is copied over from the <a href="http://www.dartistics.com/timeseries.html" class="external-link">dartistics.com
time-