Utilizar la herramienta SCP, dentro de ella, reproyectar bandas raster El mar, 3 de mar de 2026, 12:02 p. m., Burley, James (ASC/CSA) via QGIS-User <[email protected]> escribió:
> NON CLASSIFIÉ / UNCLASSIFIED > > Hello to the QGIS user’s community, > > > > I’m a planetary scientist working for the Canadian Space Agency who is > working with lunar south pole data. I’m struggling with an issue when > running a simple multiplication raster calculation that I’ve included below > (sorry for vague layer names, data is not public): > > > > “Layer1” * “Layer2” * “Layer3” * “Layer4” * “Layer5” * “Layer6” > > > > The output raster is set to the spatial resolution of the highest > resolution layer, as I’m trying to gather contextual data from coarser > datasets at very specific locations. > > > > Most cells are calculated correctly, but many cells (<10-20%) are > miscalculated to the tune of 10-30% of the expected value (sometime values > are calculated lower than they should be, sometimes higher. Even when the > highest spatial resolution cell is fully contained within a single cell in > all other layers (no overlapping cell boundaries that might lead to > different resampling values under a nearest neighbour protocol), the > calculated value can still be incorrect. > > > > I’m running QGIS 3.44.7, my system is using an i7-1265U with 32 gb of ram. > The rasters are large, 5000x5000 cell 32-bit float Geotiffs. All are using > the same coordinate system (ESRI:103878 - > Moon_2000_South_Pole_Stereographic). > > > > I’ve exported the input layers so I can run the same calculation in > ArcPro, and the cells are all calculated correctly. Not sure if that helps > narrow down the issue. > > > > Cheers, > > James > > > _______________________________________________ > QGIS-User mailing list > [email protected] > List info: https://lists.osgeo.org/mailman/listinfo/qgis-user > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user >
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