Hi, I'd like to generate multiple random surface with different spatial autocorrelation. Of course I can do that with multiple runs of r.random.surface (GRASS7) by setting different values for the distance parameter for each run (this works fine). In the manual I read that if "If multiple values are given [for the distance parameter?], each output map will have multiple filters, one for each set of distance, exponent, and weight values." Indeed, I can provide multiple names for the desired output maps, but if I want to use multiple values for the distance parameter only the first is considered. Maybe I understood the manual wrong and somebody can explain it. Here an example (e.g. for the NC dataset):
r.random.surface --overwrite output=r1,r2,r3 distance=50000.0,2.0,2000.0 seed=999 high=20000 There are multiple different maps generated but the spatial dependence of the maps seems the same. Any ideas? Anyway, there is of course still the easy way of running r.random.surface in loops. cheers, Johannes
_______________________________________________ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user