Hi Manuel, raster[] will give you a vector of the raster values so #create a new raster of the same red and extent as cob_r forest_raster<-cob_r
# assuming forest pixels have a value of 1 forest_raster[forest_raster[]!=1]<-0 plot(forest_raster) Does that work? Date: Tue, 15 Oct 2013 10:49:50 -0600 From: mspinol...@gmail.com To: r-sig-geo@r-project.org Subject: [R-sig-Geo] Selecting cells in a raster Dear list members, I have a raster with land use data (with values from 1 to 9). I want to select the cells with value 1 wich belong to forest. How can I do that? I was trying: forest <- cob_r ==1 plot(forest) but it didn´t work > cob_r class : RasterLayer dimensions : 314, 236, 74104 (nrow, ncol, ncell) resolution : 300, 300 (x, y) extent : 447181, 517981, 1121851, 1216051 (xmin, xmax, ymin, ymax) coord. ref. : +proj=tmerc +lat_0=0 +lon_0=-84 +k=0.9999 +x_0=500000 +y_0=0 +datum=WGS84 +units=m +no_defs +ellps=WGS84 +towgs84=0,0,0 data source : in memory names : layer values : 1, 9 (min, max) -- *Manuel Spínola, Ph.D.* Instituto Internacional en Conservación y Manejo de Vida Silvestre Universidad Nacional Apartado 1350-3000 Heredia COSTA RICA mspin...@una.ac.cr mspinol...@gmail.com Teléfono: (506) 2277-3598 Fax: (506) 2237-7036 Personal website: Lobito de río <https://sites.google.com/site/lobitoderio/> Institutional website: ICOMVIS <http://www.icomvis.una.ac.cr/> [[alternative HTML version deleted]] _______________________________________________ R-sig-Geo mailing list R-sig-Geo@r-project.org https://stat.ethz.ch/mailman/listinfo/r-sig-geo [[alternative HTML version deleted]]
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