Even Rouault
Even Rouault
> Gdalwarp with `-r lanczos` can cause aliased edges. you'll have to explain more the issue with some highlighting to show where you see something wrong. I can't even notice...
> It has 160GB so I will provide a description where to download it and create it. you can also try to use gdal_translate -projwin or -srcwin to create a...
> and the issue will not reproduce. actually it does, for example when comparing the cubicspline vs lanczos around coordinate 2365033.68, 6240237.04 in EPSG:3857
I've made a significant breakthrough in debugging this. The following patch disabling the Lanczos optimized code path (used since 12 years...) seems to fix the aliasing issue. ``` diff --git...
> Please post a screenshot so I could see your result Lanczos:  vs cubic spline: 
Fix in #11046
Workaround: if just reprojecting without trying to downsample/oversample, adding ``-wo XSCALE=1 -wo YSCALE=1`` will avoid the issue
The crash also happens without Valgrind. It occurs around https://github.com/OSGeo/gdal/blob/master/frmts/exr/exrdataset.cpp#L131
> You'd better mark them as `[ci skip]` in the commit message true, but it must only be used for really trivial changes, like a typo. Anything more involved related...
nipicky=true enabled in https://github.com/OSGeo/gdal/pull/12715 but with mass suppression for all Python related warnings