Restore the R environment to a snapshot
restoreEnvironment( snapshot, stopOnWrongRVersion = FALSE, strict = FALSE, skipLast = TRUE )
The snapshot data frame as generated using the
Should the function stop when the wrong version of R is installed? Else just a warning will be thrown when the version doesn't match.
If TRUE, the exact version of each package will installed. If FALSE, a package will only be installed if (a) a newer version is required than currently installed, or (b) the major version number is different.
Skip last entry in snapshot? This is usually the study package that needs to be installed manually.
This function restores the R environment to a previous snapshot, meaning all the packages will be restored to the versions they were at at the time of the snapshot. Note: on Windows you will very likely need to have RTools installed to build the various packages.