g.region raster=elevation -p r.quantile input=elevation percentiles=0.1,1,10,25,50,75,90,99,99.9
g.region raster=elevation -p r.quantile elevation quantiles=5 -r --quiet | r.recode elevation \ out=elev_quant5 rules=-
Last changed: $Date: 2014-12-19 13:55:37 -0800 (Fri, 19 Dec 2014) $