Hi, I'd like to identify the cell of maximum flow accumulation for each subbasin.
For example, I have a cover raster map representing all my subbasins (each subbasin has its own cat value). Additionally, I have a flow accumulation map. Now, I'd like to get a map with cells that are actually those with the largest flow accumulation per subbasin (all other cell should be NULL). I guess, using r.stats.zonal/r.statistics I can identify the maximum flow accumulation value for each subbasin, but this doesn't provide me a map with the corresponding cells!? Is there a straight forward way to do that in GRASS with e.g. the mapcalc? Or do I need to loop over each subbasin? Any suggestions? cheers, Johannes
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