[R] Installing spdep

[Suzanne E. Blatt]

Hello all,

I am trying to install the package 'spdep' and get the following error message when I invoke library(spdep) at the R prompt:

Error in loadNamespace(i, c(lib.loc, .libPaths()), keep.source)
    There is no package called 'maptools'
Error in library(spdep) : package/namespace load failed

I get this if I try to install 'on the fly' AND if I download directly from the download mirror (http://probability.ca/cran/) and then install inside my terminal (in superuser of course).

Any thoughts on where I can get 'maptools' or why it can't seem to locate it if it is indeed on my machine?

Thanks,

Suzanne