Dear All, I'm trying to figure out how to set the OFFSITE value for an 8bit paletted img file - I've been searching the archive for quite some time now but couldn't find an answer :(
I got the following gdalinfo: Driver: HFA/Erdas Imagine Images (.img) [..] Coordinate System is: GEOGCS["GCS_WGS_1984", DATUM["WGS_1984", SPHEROID["WGS_1984",6378137.0,298.257223563]], PRIMEM["Greenwich",0.0], UNIT["Degree",0.017453292519943295]] [..] Band 1 Block=64x64 Type=Byte, ColorInterp=Palette [..] NoData Value=0 Overviews: 7197x7624, 3599x3812, 1800x1906, 900x953, 450x477, 225x239 Metadata: [..] Color Table (RGB with 256 entries) 0: 0,0,0,255 1: 0,0,0,0 2: 0,0,0,0 3: 113,235,47,255 [..] so the NoData Value corresponds to index 0, with rgb 0,0,0 and opacity 255. In the mapfile I tried both OFFSITE 0,0,0 and PROCESSING "NoData=0" which didn't work. "OFFSITE 0", as one could expect, doesn't work either (generates an error). My output format is OUTPUTFORMAT NAME png DRIVER "GD/PNG" MIMETYPE "image/png" # IMAGEMODE RGBA IMAGEMODE PC256 EXTENSION "png" TRANSPARENT ON FORMATOPTION "transparent=on" END With my other RGB-Layers with 3bands the above setting works well, we're overlaying these WMS layers in the Google Earth API (browser plugin) using the function "ge.createGroundOverlay". We're using MapServer version 5.4.1 OUTPUT=GIF OUTPUT=PNG OUTPUT=JPEG OUTPUT=WBMP OUTPUT=SVG SUPPORTS=PROJ SUPPORTS=FREETYPE SUPPORTS=ICONV SUPPORTS=WMS_SERVER SUPPORTS=WMS_CLIENT SUPPORTS=THREADS SUPPORTS=GEOS INPUT=TIFF INPUT=EPPL7 INPUT=POSTGIS INPUT=OGR INPUT=GDAL INPUT=SHAPEFILE Any idea/clues what might be wrong here? Help is highly appreciated. Thanks and advance and greetings, Chris -- View this message in context: http://osgeo-org.1803224.n2.nabble.com/NoDATA-value-transparency-for-paletted-IMG-file-tp6305135p6305135.html Sent from the Mapserver - User mailing list archive at Nabble.com. _______________________________________________ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users