Sorry, now it's much easier to see the code. yan Yan Boulanger, Chercheur scientifique / Research scientist Ressources Naturelles Canada, Canadian Forest Service Centre de Foresterie des Laurentides 1055, rue du P.E.P.S. C.P. 10380, succ. Sainte-Foy Québec (Québec) Canada G1V 4C7 Tel. : +1 418 649-6859
-----Original Message----- From: r-sig-geo-boun...@r-project.org [mailto:r-sig-geo-boun...@r-project.org] On Behalf Of Boulanger, Yan Sent: 12 mars 2014 20:52 To: r-sig-geo@r-project.org Subject: [R-sig-Geo] loops in rasterEngine Hi folks, I guess I have a lot to learn to write functions but I'm stuck when using rasterEngine. It seems that it should be very easy to do but I'm missing something, apparently... I have a raster, Safranyik_zones_1961_1990, with values (integer) from 1 to 5. I would like to create five rasters for which value will be 1 when the raster Safranyik_zones_1961_1990 is equal to "i", and NA otherwise. I would like to run everything in a loop . Here's what I thought would be ok. fun_zone <- function(Safranyik_zones,i,...) { Safranyik_zonesb <- Safranyik_zones Safranyik_zonesb[] <- NA Safranyik_zonesb[Safranyik_zones == i] <- 1 return(Safranyik_zonesb) } for (i in 1:5){ Safranyik_zones_1961_1990b <- rasterEngine(Safranyik_zones=Safranyik_zones_1961_1990,i=i, fun=fun_zone) assign(paste("Safranyik_zones_1961_1990b_",i, sep=""),Safranyik_zones_1961_1990b[[1]]) } Of course, it says that « i » is missing...: >Erreur dans Safranyik_zones == i : 'i' est manquant Any help? Thanks in advance, Yan Yan Boulanger, Chercheur scientifique / Research scientist Ressources Naturelles Canada, Canadian Forest Service Centre de Foresterie des Laurentides 1055, rue du P.E.P.S. C.P. 10380, succ. Sainte-Foy Québec (Québec) Canada G1V 4C7 Tel. : +1 418 649-6859 [[alternative HTML version deleted]] _______________________________________________ R-sig-Geo mailing list R-sig-Geo@r-project.org https://stat.ethz.ch/mailman/listinfo/r-sig-geo
