For example it works in case of ASCII rasters: $ cat test.ascii.aux.xml <PAMDataset> <PAMRasterBand band="1"> <ColorInterp> Palette</ColorInterp> <ColorTable> <Entry c1="0" c2="0" c3="0" c4="0" /> < Entry c1="1" c2="2" c3="3" c4="4" /> <Entry c1="2" c2="4" c3="6" c4="8" /> < Entry c1="3" c2="6" c3="9" c4="12" /> <Entry c1="4" c2="8" c3="12" c4="16" /> </ColorTable> <Metadata> <MDI key="STATISTICS_MAXIMUM">4</MDI> <MDI key= "STATISTICS_MEAN">1.75</MDI> <MDI key="STATISTICS_MINIMUM">0</MDI> <MDI key= "STATISTICS_STDDEV">1.4790199457749</MDI> </Metadata> </PAMRasterBand> </ PAMDataset>
$ gdalinfo test.ascii Driver: AAIGrid/Arc/Info ASCII Grid Files: test.ascii test.ascii.aux.xml Size is 5, 1 Origin = (0.000000000000000,0.000000000000000) Pixel Size = (1.000000000000000,-1.000000000000000) Corner Coordinates: Upper Left ( 0.0000000, 0.0000000) Lower Left ( 0.0000000, -1.0000000) Upper Right ( 5.0000000, 0.0000000) Lower Right ( 5.0000000, -1.0000000) Center ( 2.5000000, -0.5000000) Band 1 Block=5x1 Type=Int32, ColorInterp=Palette Min=0.000 Max=4.000 Minimum=0.000, Maximum=4.000, Mean=1.750, StdDev=1.479 NoData Value=3 Metadata: STATISTICS_MAXIMUM=4 STATISTICS_MEAN=1.75 STATISTICS_MINIMUM=0 STATISTICS_STDDEV=1.4790199457749 Color Table (RGB with 5 entries) 0: 0,0,0,0 1: 1,2,3,4 2: 2,4,6,8 3: 3,6,9,12 4: 4,8,12,16 But the same approach (having a color table in external .aux.xml PAM file) doesn't work for GeoTIFF rasters. According to the output of gdal_translate we can see that GDAL doesn't take into account the color table defined in the external file.
_______________________________________________ gdal-dev mailing list gdal-dev@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/gdal-dev
