A big problem in reproducible research is that software changes. The code you used to do a piece of research may depend on a specific version of software that has since been changed. This is an annoying problem in R because
install.packages only installs the most recent version of a package. It can be tedious to collect the old versions.
On Toby Dylan Hocking's suggestion, I added tools to the repmis package so that you can install, load, and cite specific R package versions. It should work for any package version that is stored on the CRAN archive (http://cran.r-project.org).
To only install old package versions use the new repmis command
InstallOldPackages. For example:
# Install old versions of the e1071 and gtools packages. # Create vectors of the package names and versions to install # Note the names and version numbers must be in the same order Names <- c("e1071", "gtools") Vers <- c("1.6", "2.6.1") # Install old package versions into the default library InstallOldPackages(pkgs = Names, versions = Vers)
You can also now have
LoadandCite install specific package versions:
# Install, load, and cite specific package versions # Create vectors of the package names and versions to install # Note the names and version numbers must be in the same order Names <- c("e1071", "gtools") Vers <- c("1.6", "2.6.1") # Run LoadandCite LoadandCite(pkgs = Names, versions = Vers, install = TRUE, file = "PackageCites.bib")
See this post for more details on
I intend to continue improving these capabilities. So please post any suggestions for improvement (or report any bugs) at on the GitHub issues page.