[gdal-dev] Question about .aux.xml sidecar file handling...

[jratike80]

Carl Godkin-2 wrote
> Hi,
> 
> I have a geological map in a pair of files called USGS.tif and
> USGS.tif.aux.xml
> 
> The XML seems to have ground control points (
> <SourceGCPs>
> ) and a geographic
> coordinate system (
> <SpatialReference>
> )
> 
> I was hoping that GDAL would treat the file as if it's a GeoTIFF.  But if
> I
> run gdalinfo on the .tif, it doesn't seem to read the coordinate system or
> GCPs.  Instead, I see this:
> 
> Driver: GTiff/GeoTIFF
> Files: USGS.tif
>        USGS.tif.aux.xml
> Size is 11451, 12188
> Coordinate System is `'
> ...
> Corner Coordinates:
> Upper Left  (    0.0,    0.0)
> Lower Left  (    0.0,12188.0)
> Upper Right (11451.0,    0.0)
> Lower Right (11451.0,12188.0)
> Center      ( 5725.5, 6094.0)
> ...
> 
> Am I missing something?  I have GDAL_DATA set appropriately and am using
> GDAL 2.1.1 on Windows.
> 
> I would like to either treat the .tif + .tif.aux.xml as a GeoTIFF or else
> translate it to one.
> 
> Thanks very much,
> 
> carl

Hi,

Image is georeferenced with ground control points. I wonder what happens if
you push it through gdalwarp:

gdalwarp -s_srs epsg:xxxx -t_srs epsg:xxxx USGS.tif USGS_warped.tif

-Jukka Rahkonen-




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