Hello.
Is it possible to access metadata from the data file in a mapfile? We get data from variable sources and need to scale the colour lookup table with a metadata item from the data file. We tried to write the name of the metadata directly in the mapfile, but it didn't work. Look below in the EXPRESSION line in the mapfile. I have also added the output from the gdalinfo command. Regards, Espen Messel ------------------------------------------------------------------------ ---------------- LAYER NAME "radar" STATUS DEFAULT TYPE RASTER DUMP TRUE STATUS OFF DATA 'HDF5:"d:\\etc\data\norsa.ss.pcappi-1116-dbz.aeqd-1000.20080828T080038Z. hdf"://image1/data' METADATA "wms_extent" "5.706560 61.303028 15.411345 65.598137" "ows_include_items" "all" "ows_title" "radar" END CLASS EXPRESSION (([pixel]*[what:gain]) >= 64) COLOR 255 0 0 END +++ END ------------------------------------------------------------------------ ---------------- gdalinfo output Driver: HDF5/Hierarchical Data Format Release 5 Files: norsa.ss.pcappi-1116-dbz.aeqd-1000.20080828T080038Z.hdf Size is 512, 512 Coordinate System is `' Metadata: ..... what:gain=0.500000 what:offset=-31.500000 what:nodata=255.000000 ..... Subdatasets: SUBDATASET_0_NAME=HDF5:"norsa.ss.pcappi-1116-dbz.aeqd-1000.20080828T0800 38Z.hdf"://image1/data SUBDATASET_0_DESC=[480x480] //image1/data (8-bit unsigned character) Corner Coordinates: Upper Left ( 0.0, 0.0) Lower Left ( 0.0, 512.0) Upper Right ( 512.0, 0.0) Lower Right ( 512.0, 512.0) Center ( 256.0, 256.0)
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