[gdal-dev] DEM format and what difference between dem and geotiff
Chaitanya kumar CH
chaitanya.ch at gmail.com
Wed Apr 7 00:34:45 EDT 2010
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 <weixj2003ld at 163.com>
> 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
> : GTiff,
> GeoTIFF Drdas Imagine Images(.img)
> 6 1
> Now,I want to know that,the bandnumber of DEM file is always 1?
> gdal-dev mailing list
> gdal-dev at lists.osgeo.org
Chaitanya kumar CH.
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