Sorry I forgot my session info: > sessionInfo() R version 2.15.2 (2012-10-26) Platform: x86_64-pc-linux-gnu (64-bit)
locale: [1] LC_CTYPE=en_US.UTF-8 LC_NUMERIC=C LC_TIME=en_US.UTF-8 LC_COLLATE=en_US.UTF-8 LC_MONETARY=en_US.UTF-8 LC_MESSAGES=en_US.UTF-8 [7] LC_PAPER=C LC_NAME=C LC_ADDRESS=C LC_TELEPHONE=C LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C attached base packages: [1] stats graphics grDevices utils datasets methods base other attached packages: [1] rgdal_0.7-5 raster_2.0-12 sp_0.9-99 loaded via a namespace (and not attached): [1] grid_2.15.2 lattice_0.19-30 tools_2.15.2 Agus On Tue, Nov 13, 2012 at 10:41 AM, Agustin Lobo <alobolis...@gmail.com> wrote: > Hi! > I modify the CRS of a raster object: >> vinedomosaicMCA03 <- brick(paste(mosdir,"mosaico_envi.dat",sep="/")) >> proj <- CRS("+init=epsg:3042") >> proj > CRS arguments: > +init=epsg:3042 +proj=utm +zone=30 +ellps=GRS80 > +towgs84=0,0,0,0,0,0,0 +units=m +no_defs >> projection(vinedomosaicMCA03) <- proj >> vinedomosaicMCA03 > class : RasterBrick > dimensions : 1486, 1162, 1726732, 6 (nrow, ncol, ncell, nlayers) > resolution : 0.170881, 0.170881 (x, y) > extent : 578587.4, 578785.9, 4722025, 4722279 (xmin, xmax, ymin, ymax) > coord. ref. : +init=epsg:3042 +proj=utm +zone=30 +ellps=GRS80 > +towgs84=0,0,0,0,0,0,0 +units=m +no_defs > data source : /media/Iomega_HDD/UAVetal/vinedo/Clara_final/mosaico_envi.dat > names : mosaico_envi.1, mosaico_envi.2, mosaico_envi.3, > mosaico_envi.4, mosaico_envi.5, mosaico_envi.6 > > But then, after a reordering, the CRS changes again on its own: >> vinedomosaicMCA03v2 <- subset(vinedomosaicMCA03,c(3,1,2,4,5,6)) >> vinedomosaicMCA03v2 > class : RasterStack > dimensions : 1486, 1162, 1726732, 6 (nrow, ncol, ncell, nlayers) > resolution : 0.170881, 0.170881 (x, y) > extent : 578587.4, 578785.9, 4722025, 4722279 (xmin, xmax, ymin, ymax) > coord. ref. : +proj=utm +zone=30 +ellps=WGS84 +towgs84=0,0,0,0,0,0,0 > +units=m +no_defs > names : mosaico_envi.3, mosaico_envi.1, mosaico_envi.2, > mosaico_envi.4, mosaico_envi.5, mosaico_envi.6 > min values : NA, NA, NA, NA, NA, NA > max values : NA, NA, NA, NA, NA, NA > > The correct CRS is conserved if I write to GTiff: >> projection(vinedomosaicMCA03v2) <- proj >> vinedomosaicMCA03v2 > class : RasterStack > dimensions : 1486, 1162, 1726732, 6 (nrow, ncol, ncell, nlayers) > resolution : 0.170881, 0.170881 (x, y) > extent : 578587.4, 578785.9, 4722025, 4722279 (xmin, xmax, ymin, ymax) > coord. ref. : +init=epsg:3042 +proj=utm +zone=30 +ellps=GRS80 > +towgs84=0,0,0,0,0,0,0 +units=m +no_defs > names : mosaico_envi.3, mosaico_envi.1, mosaico_envi.2, > mosaico_envi.4, mosaico_envi.5, mosaico_envi.6 > min values : NA, NA, NA, NA, NA, NA > max values : NA, NA, NA, NA, NA, NA > >> writeRaster(vinedomosaicMCA03v2,file="mosaico_enviv2",overwrite=T,format="GTiff") > class : RasterBrick > dimensions : 1486, 1162, 1726732, 6 (nrow, ncol, ncell, nlayers) > resolution : 0.170881, 0.170881 (x, y) > extent : 578587.4, 578785.9, 4722025, 4722279 (xmin, xmax, ymin, ymax) > coord. ref. : +proj=utm +zone=30 +ellps=GRS80 +units=m +no_defs > data source : /media/Iomega_HDD/UAVetal/vinedo/RNavarra/mosaico_enviv2.tif > names : mosaico_enviv2.1, mosaico_enviv2.2, mosaico_enviv2.3, > mosaico_enviv2.4, mosaico_enviv2.5, mosaico_enviv2.6 > min values : 0, 0, 0, 0, 0, 0 > max values : 175, 224, 179, 199, 196, 204 > > But it is modified if I write to ENVI format: > >> writeRaster(vinedomosaicMCA03v2,file="mosaico_enviv2",overwrite=T,format="ENVI") > class : RasterBrick > dimensions : 1486, 1162, 1726732, 6 (nrow, ncol, ncell, nlayers) > resolution : 0.170881, 0.170881 (x, y) > extent : 578587.4, 578785.9, 4722025, 4722279 (xmin, xmax, ymin, ymax) > coord. ref. : +proj=utm +zone=30 +datum=NAD27 +units=m +no_defs > +ellps=clrk66 +nadgrids=@conus,@alaska,@ntv2_0.gsb,@ntv1_can.dat > data source : /media/Iomega_HDD/UAVetal/vinedo/RNavarra/mosaico_enviv2.envi > names : mosaico_enviv2.1, mosaico_enviv2.2, mosaico_enviv2.3, > mosaico_enviv2.4, mosaico_enviv2.5, mosaico_enviv2.6 > min values : 0, 0, 0, 0, 0, 0 > max values : 175, 224, 179, 199, 196, 204 > > > Is this a bug in raster or rgdal, or am I doing something wrong? > > Agus _______________________________________________ R-sig-Geo mailing list R-sig-Geo@r-project.org https://stat.ethz.ch/mailman/listinfo/r-sig-geo