weixj2003ld, DEM = Digital Elevation Model
.img = Irdas Imagine Format DEM can be represented in most raster formats. Refer to http://en.wikipedia.org/wiki/Digital_elevation_model 2. There is only one band because there is only the elevation data to store. The colour table takes care of the colours. 2010/4/7 weixj2003ld <[email protected]> > 1.I use GDAL to read a DEM file,and its extension is .img ,what other > extensions for DEM file? > 2.When I reand a geotff file and a dem file,I find that the dfference > between them as follows: > > > geotiff: Dem > GetDriver()->GetDescription() > : GTiff, > HFA > GetDriver()->GetMetadatItem(GDAL_DMD_LONGNAME): > GeoTIFF Drdas Imagine Images(.img) > > bandnumber > 6 1 > > Now,I want to know that,the bandnumber of DEM file is always 1? > > > > _______________________________________________ > gdal-dev mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/gdal-dev > -- Best regards, Chaitanya kumar CH. /tʃaɪθənjə/ /kʊmɑr/ +91-9848167848 17.2416N 80.1426E
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