The new addon module r.quantile.ref for grass7 calculates per pixel the corresponding quantile of an input map compared to a reference time series. The purpose of the module is to compare current environmental conditions, e.g. temperature, rainfall, NDVI, to the range of previous observations. The new module is equivalent to the reverse of r.series method=quantile: r.series calculates the value of a given quantile using a reference time series (the quantile is fixed with the quantile option), while r.quantile.ref calculates the quantile of a given value using a reference time series. Further on, the given value is not fixed but supplied as an input map. This allows easy investigation of how current conditions relate to the previously observed range. _______________________________________________ grass-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-user
