M. wrote > Dear all, > > I want to sum 13 raster maps, and calculate the mean of areas which > overlap > among them. I mean, sum all the maps, but in those areas which they > overlap > calculate the mean of the values. > > Does anybody know a method to do it? > > Thanks for the attention,
hope to understand it right, so maybe https://grass.osgeo.org/grass73/manuals/r.series.html r.series - Makes each output cell value a function of the values assigned to the corresponding cells in the input raster map layers. Following methods are available: average: average value count: count of non-NULL cells median: median value mode: most frequently occurring value minimum: lowest value maximum: highest value range: range of values (max - min) stddev: standard deviation sum: sum of values variance: statistical variance diversity: number of different values slope: linear regression slope offset: linear regression offset detcoeff: linear regression coefficient of determination tvalue: linear regression t-value min_raster: raster map number with the minimum time-series value max_raster: raster map number with the maximum time-series value HTH ----- best regards Helmut -- View this message in context: http://osgeo-org.1560.x6.nabble.com/How-to-get-the-mean-of-overlaping-areas-between-rasters-tp5294798p5294823.html Sent from the Grass - Users mailing list archive at Nabble.com. _______________________________________________ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
