On Mon, Dec 13, 2010 at 11:16 AM, Simone Frigerio <simone.frige...@univie.ac.at> wrote: > Yes of course Alex, > sorry I didn't include in the example. I can generate pixel geolocation, > of course. > Suggestion?
You can use classes in your map file's layer declaration, where values within a certain range are given a color range, as in below: ================================== ... CLASS NAME "[-200..-175]" EXPRESSION ([pixel] >-255 AND [pixel] <=-175) KEYIMAGE "class2.gif" STYLE COLORRANGE 128 0 0 192 64 0 DATARANGE -255 -175 OUTLINECOLOR 0 0 0 END END CLASS NAME "[-175..-100]" EXPRESSION ([pixel] >=-175 AND [pixel] <=-100) KEYIMAGE "class3.gif" STYLE COLORRANGE 192 64 0 255 150 0 DATARANGE -175 -100 OUTLINECOLOR 0 0 0 END END ... =========================== In the example above, values start from -200, but you can adapt it to your case for values b/n 0 and 3008. class2.gif, class3.gif, etc are small images created by hand to show up in the legend with the color gradient. Using COLORRANGE will cut down significantly on the number of CLASS objects declared for your LAYER. Does this help? I hope I understand your problem correctly... Alex _______________________________________________ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users