I am having the same problem as the OP. I understand Robert's response, but I don't think it applies to my situation. Any ideas?
Here are my rasters: > from.rast class : RasterLayer band : 2 dimensions : 96, 192, 18432 (nrow, ncol, ncell) resolution : 1.875, 1.864677 (x, y) extent : -0.9375, 359.0625, -89.50451, 89.50451 (xmin, xmax, ymin, ymax) coord. ref. : +proj=longlat +datum=WGS84 +ellps=WGS84 +towgs84=0,0,0 data source : /Volumes/Gonzo/mpi_sd/cmip5/mpi_esm_p/past1000/tas_Amon_MPI-ESM-P_past1000_r1i1p1_085001-184912.nc names : Near.Surface.Air.Temperature z-value : 0850-02-15 zvar : tas > to.rast class : RasterLayer dimensions : 100, 100, 10000 (nrow, ncol, ncell) resolution : 1000, 1000 (x, y) extent : -56204.44, 43795.56, 1590440, 1690440 (xmin, xmax, ymin, ymax) coord. ref. : +proj=aea +lat_1=55 +lat_2=65 +lat_0=50 +lon_0=-154 +x_0=0 +y_0=0 +ellps=GRS80 +datum=NAD83 +units=m +no_defs +towgs84=0,0,0 data source : in memory names : X1kmt_1860_6 values : 8.016666, 15.00667 (min, max) And here's how I'm trying to project them, along with the result: > proj.rast = projectRaster(from=from.rast, to=to.rast) > > proj.rast class : RasterLayer dimensions : 100, 100, 10000 (nrow, ncol, ncell) resolution : 1000, 1000 (x, y) extent : -56204.44, 43795.56, 1590440, 1690440 (xmin, xmax, ymin, ymax) coord. ref. : +proj=aea +lat_1=55 +lat_2=65 +lat_0=50 +lon_0=-154 +x_0=0 +y_0=0 +ellps=GRS80 +datum=NAD83 +units=m +no_defs +towgs84=0,0,0 data source : in memory names : Near.Surface.Air.Temperature values : NA, NA (min, max) I note that printing my 'from.rast' gives no 'values' field like my 'to.rast' has. The former came from a netCDF file, the latter from a geotiff [both input with 'raster()']. I can confirm that 'from.rast' really does have the values in there though: > summary(from.rast) Min. 223.8 1st Qu. 258.0 Median 280.8 Mean 275.7 3rd Qu. 295.4 Max. 305.3 And now I'm stumped. Thanks for the help in advance... Bagel -- View this message in context: http://r-sig-geo.2731867.n2.nabble.com/projectRaster-produces-an-object-with-no-values-tp7580263p7581107.html Sent from the R-sig-geo mailing list archive at Nabble.com. _______________________________________________ R-sig-Geo mailing list R-sig-Geo@r-project.org https://stat.ethz.ch/mailman/listinfo/r-sig-geo