Hi Doug, Why not call GRASS r.series through the python interface, average the stack > of rasters there, then select the point value from the result. It's a bit > brute force, but when I have used r.series directly in GRASS with hundreds > of large rasters at a time, there was fairly low memory usage. >
thanks for the response. My example was really just to explain myself a bit better. The idea is to be able to just walk the raster, being it row by row, but maybe also in a more morphologic way to follow certain terrain attributes (could be flowdirections or particular slope attributes). Currently I am putting this information together for teaching purposes. So without relying on external modules or the processing toolbox, simply be able to access raster data (and ideally also create a new raster). Cheers, Adrea > > Doug > > > Doug Newcomb - Cartographer > USFWS > 551F Pylon Dr > Raleigh, NC > 919-856-4520 ext. 14 [email protected] > > --------------------------------------------------------------------------------------------------------- > > *NOTE: This email correspondence and any attachments to and from this > sender is subject to the Freedom of Information Act (FOIA) and may be > disclosed to third parties.* > > _______________________________________________ > 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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