[Gdal-dev] Determining Opened File Format?

[Frank Warmerdam]

Ayman Kamal wrote:
> Your technique didn't work, I tried it with two files
> of type TIF ( not GeoTiff )
> 
> and your code didn't return that the file format isn't
> GeoTiff
> 
> here is the code snap:
> //////////////////////////////////////////////////////
>    GDALDriverH hInputDriver;
>    const char *szShortDriverName;
>    hInputDriver = GDALGetDatasetDriver( hDataset );
>    szShortDriverName = GDALGetDriverShortName(
> hInputDriver );
>    if ( 0 != strcmp(szShortDriverName,"GTiff") )
>    {
>       printf("\nThis is not a GeoTiff file format\n");
>       return 1;
>    }
> //////////////////////////////////////////////////////

Ayman,

TIFF and GeoTIFF both go through the GTiff driver.  There is no certain
way of establishing that a TIFF file is not also a GeoTIFF file through
GDAL, but if the driver is "GTiff", and projection string is "" and the
geotransform is [0,1,0,0,0,1] then it is likely not a geotiff file.

Best regards,

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I set the clouds in motion - turn up   | Frank Warmerdam, warmerdam at pobox.com
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