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I have a raster (25X25 meter) and I will make a new raster where each cell get the value of the sum of all the raster cells in a radius of 500m. I use QGIS. What is the best option to do this?

PolyGeo
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Pieter-Frank Van Boven
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  • Ref. http://gis.stackexchange.com/questions/24933/raster-generalization-buffers-in-rasters-expand-pixels and http://gis.stackexchange.com/questions/74592/is-there-a-focal-statistics-spatial-analyst-tool-in-arcgis-equivalent-in-qgis -- the best tool is probably r.neighbors (with method sum) – Erica Jan 08 '15 at 12:55

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I would recommend using a moving analysis window approach (Focal Statistics) to solve this. You can use the r.neighbors tool available in the QGIS GRASS toolkit. Make sure to specify a sum statistic, a circular neighborhood and the desired neighborhood size.

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Aaron
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