Hi everyone, I hope you can help me in solving this issue. Basically, what I want to do is to create a new raster map whose cells are simply given by the "or" of other two maps (possibly for specific categories), as follows:
r.mapcalc test=if(vegcover==1 || railroads==1) However, maps like railroads are null() when not equal to 1. The resulting map "test" is null() wherever cells in railroads are null(), therefore making null() also cells where vegcover is 1. How can I solve this issue? Thanks! Fulvio -- Fulvio Mastrogiovanni DIST|University of Genova|Italy Email: fulvio.mastrogiova...@unige.it WWW: http://www.laboratorium.dist.unige.it/~fulvio/ Phone: (+39)0103532801 "Chi è abile nel sortire bizzarri stratagemmi è inesauribile come il Cielo, la Terra e i grandi fiumi. Giunto al termine riparte, come il Sole e la Luna; dopo morto rinasce, come le quattro stagioni." _______________________________________________ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
