[mapserver-users] AGG renderer and paletted RGBA PNG's
Roger André
randre at gmail.com
Mon Dec 8 14:46:43 PST 2008
Hi All,
I'm seeing a problem in some of my raster data which have graduated color
ramps in them. When using the AGG renderer, the data appears to have
discreet colors (which is incorrect), whereas with the GD renderer, we get
correct color gradients.
The GD outputformat looks like this:
OUTPUTFORMAT
NAME 'png'
DRIVER GD/PNG
IMAGEMODE RGBA
EXTENSION "png"
FORMATOPTION "TRANSPARENT=ON"
FORMATOPTION "INTERLACE=OFF"
TRANSPARENT ON
END #end outputformat
The AGG outputformat looks like this:
OUTPUTFORMAT
NAME 'AGGA'
DRIVER AGG/PNG
IMAGEMODE RGBA
EXTENSION "png"
MIMETYPE "image/png; mode=24bit"
FORMATOPTION "TRANSPARENT=ON"
FORMATOPTION "INTERLACE=OFF"
END
In addition, the output image appears to have a color palette, instead of
being a 4-ch png. Finally, the problem is present in WMS requests, but not
straight MODE=map requests.
My WMS request looks like this:
http://localhost/cgi-bin/mapserv?map=/var/www/mapfiles/hydro/hydro.map&SERVICE=WMS&version=%221.1.1%22&REQUEST=GetMap&LAYERS=imagery&STYLES=&BBOX=-125,39,-108,54&WIDTH=600&HEIGHT=600&FORMAT=png&SRS=epsg:4326
Any ideas?
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/mapserver-users/attachments/20081208/00330794/attachment.htm>
More information about the MapServer-users
mailing list