Hi, I'm not familiar with the dataset, but I am guessing it is related to how the labels are encoded. If that is the case, then it is possible the stored class labels are not literally 1-23 but are 23 labels selected from the range of 0-255. You could do a brief check with ...
table(r[]) Cheers, Ben On Tue, Mar 2, 2021 at 12:15 PM Manuel Spínola <mspinol...@gmail.com> wrote: > Dear list members, > > I am working with a .tif file from the Copernicus Global Land Service with > land cover data. The file has 23 discrete classes but the raster shows a > continuous range of values (0 to 255). > > r = > > raster(W100N20_PROBAV_LC100_global_v3.0.1_2019-nrt_Discrete-Classification-map_EPSG-4326.tif) > > class : RasterLayer > dimensions : 20160, 20160, 406425600 (nrow, ncol, ncell) > resolution : 0.0009920635, 0.0009920635 (x, y) > extent : -100, -80, 0, 20 (xmin, xmax, ymin, ymax) > crs : +proj=longlat +datum=WGS84 +no_defs > source : > /Users/manuelspinola/Documents/01-Manolo/R_OVS_material/landscape_ecology/datos_copernicus/W100N20_PROBAV_LC100_global_v3.0.1_2019-nrt_Discrete-Classification-map_EPSG-4326.tif > names : > W100N20_PROBAV_LC100_global_v3.0.1_2019.nrt_Discrete.Classification.map_EPSG.4326 > values : 0, 255 (min, max) > > > > How can I recognize the different discrete classes included in the raster > representing each land cover type. > > Manuel > > > -- > *Manuel Spínola, Ph.D.* > Instituto Internacional en Conservación y Manejo de Vida Silvestre > Universidad Nacional > Apartado 1350-3000 > Heredia > COSTA RICA > mspin...@una.cr <mspin...@una.ac.cr> > mspinol...@gmail.com > Teléfono: (506) 8706 - 4662 > 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 > -- Ben Tupper Bigelow Laboratory for Ocean Science East Boothbay, Maine http://www.bigelow.org/ https://eco.bigelow.org [[alternative HTML version deleted]] _______________________________________________ R-sig-Geo mailing list R-sig-Geo@r-project.org https://stat.ethz.ch/mailman/listinfo/r-sig-geo
