The CRAN OSX rgdal binaries 1.3-3 and 1.3-4 do not include PROJ datum metadata files. To check whether your OSX binary rgdal has the PROJ datum metadata files, try: library(rgdal) projNAD() If they are not present, consider running this snippet: pkg <- "rgdal" exdir <- file.path(system.file(package=pkg), "proj") list.files(exdir) tf <- tempfile() fl <- "http://download.osgeo.org/proj/proj-datumgrid-1.7.zip" download.file(fl, tf) unzip(tf, exdir=exdir) list.files(exdir) Hope this helps, Roger
Roger Bivand Department of Economics, Norwegian School of Economics, Helleveien 30, N-5045 Bergen, Norway. voice: +47 55 95 93 55; e-mail: Roger.Bivand at nhh.no http://orcid.org/0000-0003-2392-6140 https://scholar.google.no/citations?user=AWeghB0AAAAJ&hl=en