Thank you very much Barry. Manuel
2014-02-01 Barry Rowlingson <[email protected]>: > Some raster file types don't let you store the coordinate reference > system. Arc/Info Ascii Grid files are just the grid size and shape in > a header and the values, with no provision for a CRS field. (Unless > esri updated the file spec since I last used them...) > > Saving as a GeoTIFF should preserve it in the file's metadata. > > Barry > > > On Fri, Jan 31, 2014 at 10:13 PM, Manuel Spínola <[email protected]> > wrote: > > Dear list members, > > > > When using the function writeRaster (raster package) the coord. ref shows > > NA, even when the raster has a coord. ref. > > > > How can I keep the coord. ref. in my output raster? > > > >> show(distAc_gam) > > class : RasterLayer > > dimensions : 477, 746, 355842 (nrow, ncol, ncell) > > resolution : 100, 100 (x, y) > > extent : 450664.7, 525264.7, 1076344, 1124044 (xmin, xmax, ymin, > ymax) > > coord. ref. : +proj=tmerc +lon_0=-84 +lat_0=0 +x_0=500000 +k=0.9999 > > +datum=WGS84 +ellps=WGS84 +towgs84=0,0,0 > > data source : in memory > > names : layer > > values : 0, 12081.39 (min, max) > > > > > >> writeRaster(distAc_gam, filename = "Raster_distAc.asc", overwrite = > TRUE) > > class : RasterLayer > > dimensions : 477, 746, 355842 (nrow, ncol, ncell) > > resolution : 100, 100 (x, y) > > extent : 450664.7, 525264.7, 1076344, 1124044 (xmin, xmax, ymin, > ymax) > > coord. ref. : NA > > data source : > > > /Users/manuelspinola/Dropbox/Proyectos_en_R/Viviana_Narvaez/Raster_distAc.asc > > names : Raster_distAc > > > > > > > > > > > > -- > > *Manuel Spínola, Ph.D.* > > Instituto Internacional en Conservación y Manejo de Vida Silvestre > > Universidad Nacional > > Apartado 1350-3000 > > Heredia > > COSTA RICA > > [email protected] > > [email protected] > > 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]] > > > -- *Manuel Spínola, Ph.D.* Instituto Internacional en Conservación y Manejo de Vida Silvestre Universidad Nacional Apartado 1350-3000 Heredia COSTA RICA [email protected] [email protected] 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]]
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