> Those two are equivalent. And can be done with a little r.mapcalc math > or with r.recode rules (which you can embed in a script if you need to > calculate the intervals on the fly. What is the reason for not having this implemented in GRASS directly? Design considerations?
I am looking for raster classification in equvalents to * Equal Interval * Quantile (OK, see below) * Natural Breaks (Jenks) * Standard Deviation * Pretty Breaks Note: OSGEO4W does not install R. > > * automatically classification based on defined number of classes > > You can use r.quantile for quantile classification: > r.quantile elevation quantiles=5 -r --quiet | r.recode elevation > out=elev_quant5 rules=- How do I get "|" pipe in the GUI on OSGEO4W? I got a strange output using the example from the handbook: r.quantile -r --q input=RASTER_fullrange percentiles=0.2,0.4,0.6,0.8 900.000000:900.000000:1 900.000000:900.000000:2 900.000000:900.000000:3 900.000000:900.000000:4 900.000000:2000.000000:5 What is wrong here? And when I use the quanitles I get anther strange: r.quantile -r --quiet input=RASTER_fullrange quantiles=4 1120.000000:1120.000000:1 2120.000000:1340.000000:2 1340.000000:1560.000000:3 1560.000000:2000.000000:4 -> Why does ot not set class 1 to 900.000000:1120.000000:1 900 is the minimum value. Thanks a lot in advance, Timmie _______________________________________________ grass-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-user
