Thank you for your answers.
At the time I installed mapserver 5.2, I didn't manage to compile in AGG support so I left it out. Of course that is then just the feature you need... I'll have to give it a retry.
Reinoud
Fawcett, David wrote:
Of course Thomas would have had the right answer! I happily stand
corrected.
The opacity of overlapping symbols is cumulative.
David.
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of thomas
bonfort
Sent: Thursday, September 25, 2008 4:48 AM
To: Reinoud Bokhorst
Cc: mapserver-users@lists.osgeo.org
Subject: Re: [mapserver-users] Color filled transparent polygons
yes,
from version 5.2 AND with AGG output, you can obtain this by setting the
OPACITY keyword at the STYLE level.
cheers,
thomas
On Thu, Sep 25, 2008 at 11:20, Reinoud Bokhorst <[EMAIL PROTECTED]>
wrote:
Hi,
I have a PostGIS table with about 12000 polygons scattered around the
globe. The polygons outline areas where I have particular model data.
To get an impression about the data density, I want to plot the
polygons with a fill color and a high transparency value. This would
mean that the colour on the map gets darker depending on how many
polygons overlap at a particular location because the color values
will add up. I can do this for example in QGIS but not in Mapserver.
It requires that the polygons themselves are drawn using a
transparency value but it seems that mapserver first draws all
polygons and them applies the transparency value to the resulting
image. Is there a solution for this?
Reinoud Bokhorst
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