Chris, Can you provide the gdalinfo output of the geotiff?
On Thu, Apr 7, 2011 at 2:29 PM, Goo Creations <[email protected]>wrote: > I've worked through some QGis code and noticed that if this happens, > GDALAutoCreateWarpedVRT is called on the image to create a copy. So > GDALAutoCreateWarpedVRT somehow retrieves some sort of metadata to > accomplish this. > > > > > On Thu, Apr 7, 2011 at 10:44 AM, Goo Creations <[email protected]>wrote: > >> A couple of different apps, such as QGis and Monteverdi (who rotated the >> image). If I view the image in a normal image viewer (or application not >> built on top of GDAL, the image is not rotated). Hence there must be some >> metadata from GDAL these applications use to rotate the image. >> >> And yes, I can read other metadata. >> >> Chris >> >> >> >> >> On Thu, Apr 7, 2011 at 10:34 AM, Chaitanya kumar CH <chaitanya.ch@ >> gmail.com> wrote: >> >>> Chris, >>> >>> What did you use to view the image? Were you able to read any other Geo >>> related data with that? >>> >>> On Thu, Apr 7, 2011 at 1:56 PM, Goo Creations <[email protected]>wrote: >>> >>>> Hi all >>>> >>>> I tried to read the transformation coefficients by using >>>> GDALDataset::GetGeoTransform. This function however returned CE_Failure, so >>>> i assume that the values are not stored in the metadat. >>>> When I view the image, the image is rotated. There is no world file or >>>> anything that could cause the rotation. >>>> >>>> So my question: If these values are not stored in the metadata, how does >>>> GDAL handle the rotation, pixel size, etc? >>>> >>>> Chris >>>> >>>> >>>> _______________________________________________ >>>> gdal-dev mailing list >>>> [email protected] >>>> http://lists.osgeo.org/mailman/listinfo/gdal-dev >>>> >>> >>> >>> >>> -- >>> Best regards, >>> Chaitanya kumar CH. >>> /tʃaɪθənjə/ /kʊmɑr/ >>> +91-9494447584 >>> 17.2416N 80.1426E >>> >> >> > -- Best regards, Chaitanya kumar CH. /tʃaɪθənjə/ /kʊmɑr/ +91-9494447584 17.2416N 80.1426E
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