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    Hallo Scilab friends,<br>
    Is there a way to punch a<b> peak through</b> hole into a rectangle?<br>
    <br>
    The result below  looks like a hole but it is just white
    intransparent color. <br>
    <pre><span>xdel</span><span>(</span><span>)</span><span>;</span>
<span>xf</span><span>=</span><span></span><span>[</span><span>1</span><span>;</span><span>-</span><span>1</span><span>;</span><span>-</span><span>1</span><span>;</span><span>1</span><span>]</span><span>;</span> <span>yf</span><span>=</span><span></span><span>[</span><span>1</span><span>;</span><span>1</span><span>;</span><span>-</span><span>1</span><span>;</span><span>-</span><span>1</span><span>]</span><span>;</span> <span>zf</span><span>=</span><span>[</span><span>0</span><span>;</span><span>0</span><span>;</span><span>0</span><span>;</span><span>0</span><span>]</span><span>;</span>     
<span>plot3d</span><span>(</span><span>xf</span><span>,</span><span>yf</span><span>,</span><span>list</span><span>(</span><span>zf</span><span>,</span><span>5</span><span>)</span><span>)</span><span>//Facet</span>
  <span>ce</span><span>=</span><span>gce</span><span>(</span><span>)</span><span>;</span> <span>ce</span><span>.</span><span>hiddencolor</span> <span>=</span> <span>5</span><span>;</span>
<span>xf</span><span>=</span><span>0.5</span><span>*</span><span>[</span><span>1</span><span>;</span><span>-</span><span>1</span><span>;</span><span>-</span><span>1</span><span>;</span><span>1</span><span>]</span><span>;</span> <span>yf</span><span>=</span><span>0.5</span><span>*</span><span>[</span><span>1</span><span>;<span>1</span><span>;</span><span>-</span><span>1</span><span>;</span><span>-</span><span>1</span><span>]</span><span>;</span> <span>zf</span><span>=</span><span>[</span><span>0</span><span>;</span><span>0</span><span>;</span><span>0</span><span>;</span><span>0</span><span>]</span><span>;</span>
<span>plot3d</span><span>(</span><span>xf</span><span>,</span><span>yf</span><span>,</span><span>list</span><span>(</span><span>zf</span><span>,</span><span>8</span><span>)</span><span>)</span><span>//Hole</span>
  <span>ce</span><span>=</span><span>gce</span><span>(</span><span>)</span><span>;</span> <span>ce</span><span>.</span><span>hiddencolor</span> <span>=</span> <span>8</span><span>;

Cheers

Jens
</span></span></pre>
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