bo...@club-internet.fr wrote:
No problem. I have re-uploaded a new version: http://bosow.free.fr/bundle.rar I compiled it and the same error occurs: ch2d (float* buffer) remains unchanged after WarpRegionToBuffer() call.
Matthieu, The core problem is that you setup a transformer that goes from pixel/line coordinates on the source raster to georeferenced coordinates, instead of going to pixel/line coordinates on the destination raster. It is a clue that you use GDALSuggestedWarpOutput() to get a geotransform and pixel size for the output buffer but you never actually make any use of those values. One approach is to define your own transformer instead of using GDALCreateGenImgProjTransformer() that maps between source and destination buffer pixel/line coordinates using the geotransforms or perhaps even other mechanisms. Another approach might be to create a sort of fake output file, based on the output of GDALSuggestedWarpOutput() and then pass that in to GDALCreateGenImgProjTransformer() but still pass NULL for the destination dataset when you setup the psWarpOptions. I realize using WarpRegionToBuffer() directly is rather complication - but it was not really intended to be widely used outside of the warp engine itself. If you wish to followup feel free to do it by direct email to me. Best regards, -- ---------------------------------------+-------------------------------------- I set the clouds in motion - turn up | Frank Warmerdam, warmer...@pobox.com light and sound - activate the windows | http://pobox.com/~warmerdam and watch the world go round - Rush | Geospatial Programmer for Rent _______________________________________________ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev