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1

You can either leave the -s_srs empty or use +proj=sinu +R=6371007.181 +nadgrids=@null +wktext gdalwarp -of GTIFF -s_srs '+proj=sinu +R=6371007.181 +nadgrids=@null +wktext' -r cubic -t_srs '+proj=longlat +datum=WGS84 +no_defs' {inputfile} {outputfile} Note that inputfile must be the full subdataset (SDS) name, which you can get from gdalinfo. For example, ...


0

I just happened to come across this question and a potential answer when looking for something else. gdal_merge.py uses nearest neighbor resampling. If you want control over the resampling used, you should use gdalwarp instead. source: trac.osgeo.org


4

Your assumption is right, you need the correct values for the corner coordinates. Since the source image is slightly larger than the Earth, you can not simply reproject the corner coordinates. You may use a different approach: According to the project site, the 5500x5500pix data is providing a 2km resolution on the center. So the extent from the center is ...



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