Tom,
Try this output definition:
OUTPUTFORMAT
NAME "agg_qn"
DRIVER "AGG/PNG"
EXTENSION "png"
MIMETYPE "image/png"
IMAGEMODE RGB
FORMATOPTION "INTERLACE=false"
FORMATOPTION "QUANTIZE_NEW=ON"
FORMATOPTION "QUANTIZE_FORCE=ON"
FORMATOPTION "QUANTIZE_DITHER=OFF"
FORMATOPTION "QUANTIZE_COLORS=256"
#TRANSPARENT ON
#FORMATOPTION "TRANSPARENT=ON"
END
-Steve W
On 4/12/2012 12:20 AM, Thomas Joseph wrote:
We have recently upgraded from Mapserver 5.7 to 6.0 and although the AGG
anti-alias lines look great the output image size has increased
significantly from the previous rendering without anti-alias. I was just
wondering if there is a way to turn off the anti-alias for polyline
rendering in Mapserver 6.0. From the documentation it appeared that the
previous GD driver did not include anti-alias by default. We have
attempted to switch the outputformat from the new default AGG to the
previous GD driver using the outputformat directive in the map file as
shown below. This changed the image size slightly suggesting that
mapserver was using a different driver to render, however the lines were
still rendered with anti-alias on and the image was still relatively
large compared to previous mapserver verison.
OUTPUTFORMAT
NAME "GDpng"
DRIVER GD/PNG
MIMETYPE "image/png"
IMAGEMODE RGB
EXTENSION "png"
END
Previously in Mapserver 5.7 we did not specify an outputformat we simply
used IMAGETYPE PNG24 and the output was generated without anti-alias.
Any suggestions would be greatly appreciated. If you need additional
information let me know.
tom
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