The origin of this question is this ticket in QGIS: https://github.com/qgis/QGIS/issues/56288
The summary is that with rasters ordered bottom-up, QGIS is doing a Warped VRT. But Warp us using square pixels... that is distorting too much the image in some cases (and I would say it is more expensive, but that is not the problem). I know, looking at gdalwarp, that the warp can be done with different pixel size for X and Y. for instance, with this command: gdalwarp -tr 0.2 0.1 bottom-up.xyz warped.xyz I want to provide the pixel size of the original image. And I could use "GDALWarpAppOptions" dfXRes and dfYRes for that. However in the code in QGIS (mentioned in the ticket) https://github.com/qgis/QGIS/blob/3a18496f7c25a00cb26cb5abe0e53b2a13b3de68/src/core/providers/gdal/qgsgdalprovider.cpp#L3590 I only have access to "GDALWarpOptions" (see that there is no "App" in the name). I don't see how to provide that data to "GDALAutoCreateWarpedVRT". Any idea? Thanks. Javier .___ ._ ..._ .. . ._. .___ .. __ . _. . __.. ... .... ._ .__
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