Re: [mapserver-users] Black background with palette
Solved. For the record : http://trac.osgeo.org/mapserver/ticket/3217#comment:5 Alexandre Alexandre Dube wrote: Steve Lime wrote: Are you compiling with the experimental png support? No, but I just tried with it and it didn't resolved the issue. I noticed a slight change of the image quality though. Thanks, -- Alexandre Dubé Mapgears www.mapgears.com ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users
Re: [mapserver-users] Black background with palette
Steve Lime wrote: Are you compiling with the experimental png support? No, but I just tried with it and it didn't resolved the issue. I noticed a slight change of the image quality though. Thanks, -- Alexandre Dubé Mapgears www.mapgears.com ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users
[mapserver-users] Black background with palette
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 -- Alexandre Dubé Mapgears www.mapgears.com ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users
Re: [mapserver-users] Black background with palette
Alexandre, Do you have IMAGECOLOR #00 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 ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users
Re: [mapserver-users] Black background with palette
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 #00 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 ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users
Re: [mapserver-users] Black background with palette
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 #00 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 ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users -- Alexandre Dubé Mapgears www.mapgears.com ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users
Re: [mapserver-users] Black background with palette
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 #00 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 ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users
Re: [mapserver-users] Black background with palette
Are you compiling with the experimental png support? On 11/30/2009 at 12:47 PM, in message 4b141344.3040...@mapgears.com, Alexandre Dube ad...@mapgears.com wrote: 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 #00 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 ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users
