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 "#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 >>>>>> >>>>>> >>>>> >>>>> _______________________________________________ >>>>> mapserver-users mailing list >>>>> mapserver-users@lists.osgeo.org >>>>> http://lists.osgeo.org/mailman/listinfo/mapserver-users >>>> >>> >>> >> >
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