Hi, I tried to install R packages required for the GRASS-R interface by using the following command (copied from http://www.geog.uni-hannover.de/grass/statsgrass/grass6_r_install.html): /install.packages (c("sp", "spgrass6","rgdal","maptools"), dependencies =TRUE)/ rgdal package was installed successfully; There were problems to find 'sp' and 'maptools' packages. The error message was /: dependencies 'sp' and 'maptools' are not available/. I tried to download the packages from three different mirrors with the same result ( http://cran.fr.r-project.org/ , http://cran.mirroring.de/, http://probability.ca/cran/ ) <http://probability.ca/cran/> I then failed to download 'spgrass6' since it required to download first "sp" can anybody tell me what mistake I did and how (where?) I can get these packages Thank you very much by advance <http://probability.ca/cran/>
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