I've just spent most of the afternoon banging my head against the desk because
it appears that you cannot set a geotransform of (0, 1, 0, 0, 0, -1). Any other
value works fine, but with this particular GT, the change is not saved when you
close the ds. Is this a known issue? I'm using GDAL 2.2.0 on Python 3.6.8.
IPython console:
In [269]:
ds=gdal.GetDriverByName('GTiff').Create('/tmp/test.tif',5,5,1,gdal.GDT_Byte)
In [270]: ds.GetGeoTransform()
Out[270]: (0.0, 1.0, 0.0, 0.0, 0.0, 1.0)
In [271]: ds.SetGeoTransform((0,1,0,0,0,-1))
Out[271]: 0
In [272]: del ds
In [273]: ds=gdal.OpenEx('/tmp/test.tif',gdal.GA_Update)
In [274]: ds.GetGeoTransform()
Out[274]: (0.0, 1.0, 0.0, 0.0, 0.0, 1.0)
In [275]: ds.SetGeoTransform((0,1,0,0,0,-1.000000001))
Out[275]: 0
In [276]: del ds
In [277]: ds=gdal.OpenEx('/tmp/test.tif',gdal.GA_Update)
In [278]: ds.GetGeoTransform()
Out[278]: (0.0, 1.0, 0.0, 0.0, 0.0, -1.000000001)
Thanks,
Jon
Jon Morris
Software Developer
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