tep)
stackplot(x,y,scale,step,labels)
stackplot(x,y,scale,step,labels,colors)
</pre>

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<div class="subtitle">Description</div>

<p>
This function plots 1D slices (columns or rows) of the matrix <code>y</code>
stacked on top of each other, with the 1D array <code>x</code> as the
x coordinate. The number of elements in <code>x</code> determines whether
the columns or rows of <code>y</code> are plotted.
 </p>

<p>
If <code>scale</code> is give