I ran a quick test and confirmed that gdal.AutoCreateWarpedVRT is returning
different results than osr.CoordinateTransformation.
I.E. I opened a file using:
Dataset dataset = gdal.Open("/images/image.tif");
I grabbed the corner point and used
osr.CoordinateTransformation.TransformPoint(), to transform the point into
EPSG:4326.
I warped the dataset using gdal.AutoCreateWarpedVRT, grabbed the corner
point and the corner point was a little different.
I am not sure if that is expected behavior or not. Hopefully I am just
missing some static files and one of the transformations was not quite
right. I tried all the different sampling algos available for the
AutoCreateWarpedVRT and that did not make a huge difference.
Is warp using a different method to transform the points? If so is that
transformation available via the API?
I understand that not all calcs may be exact between these two but I would
expect the corner point to be almost exact.
Any ideas?
Thanks,
Billy
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