Mapping dependencies among R packages packdep elucidates the dependencies between user-contributed R packages and identifies key packages according to social network analysis metrics. Software Depends: R (>= 2.9.0), igraph (>= 0.5.2), utils, tools Marco Scutari <marco.scutari@stat.unipd.it> Radhakrishnan Nagarajan <rnagarajan@uams.edu> and Marco Scutari <marco.scutari@stat.unipd.it> GPL (>= 2) 2009-07-26 application/tgz http://CRAN.R-project.org/package=packdep