Hello, I have a question about how to properly set the -tr flag when using gdalwarp. In particular, I'm using gdalwarp for resampling a GeoTiff from its original resolution to a target resolution. Let's consider, for simplicity, the original pixel size equal to (5m, 5m) and the target resolution equal to (10m, 10m).
This is the command I use: gdalwarp -tr 10 -10 input.tif output.tif I'm using a negative <yres> because when I open the GeoTiff file in QGIS, or if I use gdalinfo, I get a pixel size equal to (5, -5) for the source raster. Is it correct to use a negative <yres> with gdalwarp? I also tried -tr 10 10, but the result seems to be the same as the case in which I use -tr 10 -10. In both cases gdalinfo and QGIS display (10,-10) as the pixel size. How does gdalwarp treat a negative yres value? Thank you Giovanni -- **Fai crescere le giovani ricercatrici e i giovani ricercatori* **con il 5 per mille alla Sapienza *Scrivi il codice fiscale dell'Università *80209930587 Cinque per mille <https://www.uniroma1.it/it/node/23149>*
_______________________________________________ gdal-dev mailing list gdal-dev@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/gdal-dev
