<p>I'm trying to render a single vector layer that has overlapping polygons, but I cant seem to get the settings correct for what I want. There are overlapping polygons on the layer, and I would like them to each be drawn transparently so that I can see the overlapping regions. However, no matter what I try I can't seem to get this effect and the rendering will make the shapes draw over each other.&nbsp;</p>
<p>&nbsp;</p>
<p>I'm using Mapserver 6.0.1</p>
<p>&nbsp;</p>
<p>OUTPUTFORMAT&nbsp;</p>
<p><span style="white-space: pre;"> </span>NAME "png"&nbsp;</p>
<p><span style="white-space: pre;"> </span>DRIVER AGG/PNG&nbsp;</p>
<p><span style="white-space: pre;"> </span>MIMETYPE "image/pngt"&nbsp;</p>
<p><span style="white-space: pre;"> </span>IMAGEMODE RGBA&nbsp;</p>
<p><span style="white-space: pre;"> </span>EXTENSION "png"&nbsp;</p>
<p><span style="white-space: pre;"> </span>FORMATOPTION "GAMMA=1.0"&nbsp;</p>
<p><span style="white-space: pre;"> </span>TRANSPARENT TRUE</p>
<p>END</p>
<p>&nbsp;</p>
<p>I have a very simple class for my layer</p>
<p>&nbsp; CLASS<span> </span></p>
<p><span>&nbsp;</span><span style="white-space: pre;"> </span>STYLE<span> </span> &nbsp;</p>
<p><span style="white-space: pre;"> </span>OPACITY 25<span> </span> &nbsp;</p>
<p><span style="white-space: pre;"> </span>COLOR [color]<span> </span> &nbsp;</p>
<p><span style="white-space: pre;"> </span>OUTLINECOLOR -1 -1 -1&nbsp; &nbsp; &nbsp;</p>
<p><span style="white-space: pre;"> </span>ANTIALIAS TRUE&nbsp; &nbsp;</p>
<p><span style="white-space: pre;"> </span>END<span> </span></p>
<p><span>&nbsp;</span><span style="white-space: pre;"> </span>LABEL&nbsp; &nbsp; &nbsp;</p>
<p><span style="white-space: pre;"> </span>COLOR &nbsp;0 0 255&nbsp; &nbsp; &nbsp;</p>
<p><span style="white-space: pre;"> </span>OUTLINECOLOR 250 250 250&nbsp; &nbsp; &nbsp;</p>
<p><span style="white-space: pre;"> </span>OUTLINEWIDTH 3&nbsp; &nbsp; &nbsp;</p>
<p><span style="white-space: pre;"> </span>FONT stMYFont&nbsp; &nbsp; &nbsp;</p>
<p><span style="white-space: pre;"> </span>TYPE truetype&nbsp; &nbsp; &nbsp;</p>
<p><span style="white-space: pre;"> </span>SIZE 9&nbsp; &nbsp; &nbsp;</p>
<p><span style="white-space: pre;"> </span>POSITION AUTO&nbsp; &nbsp; &nbsp;</p>
<p><span style="white-space: pre;"> </span>PARTIALS FALSE&nbsp; &nbsp; &nbsp;</p>
<p><span style="white-space: pre;"> </span>MINFEATURESIZE AUTO&nbsp; &nbsp;</p>
<p><span style="white-space: pre;"> </span>END&nbsp;</p>
<p>&nbsp;END</p>
<p>&nbsp;</p>