Stephen,
Everything is there : http://trac.osgeo.org/mapserver/ticket/3217
Kind regards,
Alexandre
Stephen Woodbridge wrote:
Alexandre,
Try this as a hack and see if it helps.
Create a dummy LAYER like:
LAYER
NAME "pixel"
STATUS DEFAULT
TYPE POINT
TRANSFORM OFF
FEATURE
POINTS 0 0 END
END
CLASS
COLOR <backgroundcolor>
END
END
and make it your first layer. This will draw a one pixel dot in the
upper left corner of the image in background color, but it might fake
out mapserver if you have it some funny corner case.
Also can you reproduce this with a mapfile with one layer like the
above, but with POINTS -2 -2 END so that it is drawn off the image?
THen post you that makefile and we can try it.
What version of mapserver?
Otherwise if that doesn't work, maybe someone has other ideas.
-Steve W
Alexandre Dube wrote:
Stephen,
The MAP imagecolor isn't black and to put it at first position in my
palette file but that didn't help.
Thanks for your help,
Alexandre
Stephen Woodbridge wrote:
Another thought on this is the because you are asking for a
transparent image, the IMAGECOLOR tag is usually transparent and I
have seen that come up as black in some cases.
-Steve W
Stephen Woodbridge wrote:
Alexandre,
Do you have IMAGECOLOR "#000000" set at the MAP level? Also I would
put the background color as the first color in the mypalette.txt
file and see if that helps.
-Steve W
Alexandre Dube wrote:
Hi,
== problem ==
I'm pretty sure I saw this problem on the list somewhere, but I
couldn't find the actual thread so here it is : while using
agg & palette option, when there's no data to draw, instead of
having the backgroundcolor drawn it's all black instead.
How can I go around this problem ?
== my actual need ==
I want to produce smaller images. Currently, my getMap renders a
66K png image. With the palette, it's down to 17K but with a
black background.
== ouputformat definition ==
OUTPUTFORMAT
NAME aggpng24
DRIVER AGG/PNG
MIMETYPE "image/png"
IMAGEMODE RGB
EXTENSION "png"
FORMATOPTION "INTERLACE=OFF"
FORMATOPTION "PALETTE_FORCE=ON"
FORMATOPTION "PALETTE=/my/path/mypalette.txt"
TRANSPARENT ON
FORMATOPTION "TRANSPARENT=ON"
END
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Alexandre Dubé
Mapgears
www.mapgears.com
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