R.utils: useRepos – R documentation

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useRepos

Sets package repositories

Sets package repositories.

useRepos(repos=NULL, where=c("before", "after", "replace"), unique=TRUE, fallback=TRUE,
  ...)

`repos`	A `character` `vector` of repositories to use. If `NULL`, nothing is replaced.
`where`	A `character` string specifying how to add them to the current set of repositories.
`unique`	If `TRUE`, only unique repositories are set.
`fallback`	If `TRUE`, any remaining non-specified repository value of format '`...`@' (e.g. '@CRAN@') than could not be recovered by other means, will be assigned to a pre-defined known value, if possible. If so, then an informative warning is given.
`...`	Not used.

Returns a list with element 'repos' reflecting options("repos") as the options where prior to calling this function.

Henrik Bengtsson