[mapserver-users] Turn off anti-alias Mapserver 6.0

[Thomas Joseph]

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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