Hi,
I want to go from x,y (pixels) to lon,lat and vice versa, using geotiffs.
I have found the GetGeoTransform() <http://www.gdal.org/classGDALDataset.html#af9593cc241e7d140f5f3c4798a43a668> function, but the documentations says:

"NOTE: GetGeoTransform() <http://www.gdal.org/classGDALDataset.html#af9593cc241e7d140f5f3c4798a43a668> isn't expressive enough to handle the variety of OGC Grid Coverages pixel/line to projection transformation schemes. Eventually this method will be depreciated in favour of a more general scheme."

I googled a lot, but cannot find out what is meant exactly by "OGC Grid Coverages". I am just working with a simple cartesian x,y grid.

Anyone willing to explain a bit more.
Thanks.
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