R: Select Package Repositories

setRepositories {utils} | R Documentation

## Select Package Repositories

### Description

Interact with the user to choose the package repositories to be used.

### Usage

    setRepositories(graphics = getOption("menu.graphics"),
                    ind = NULL, addURLs = character())

### Arguments

`graphics` | Logical. If true, use a graphical list: on Windows or OS X GUI use a list box, and on a Unix-alike if tcltk and an X server are available, use Tk widget. Otherwise use a text `menu`.
`ind` | `NULL` or a vector of integer indices, which have the same effect as if they were entered at the prompt for `graphics = FALSE`.
`addURLs` | A character vector of additional URLs: it is often helpful to use a named vector.

### Details

The default list of known repositories is stored in the file ‘R_HOME/etc/repositories’. That file can be edited for a site, or a user can have a personal copy in ‘HOME/.R/repositories’ which will take precedence.

A Bioconductor mirror can be selected by setting `options("BioC_mirror")`, e.g. via `chooseBioCmirror` the default value is "http://www.bioconductor.org".

The items that are preselected are those that are currently in `options("repos")` plus those marked as default in the list of known repositories.

The list of repositories offered depends on the setting of option `"pkgType"` as some repositories only offer a subset of types (e.g., only source packages or not OS X binary packages). Further, for binary packages some repositories (notably R-Forge) only offer packages for the current or recent versions of R.

Repository CRAN is treated specially: the value is taken from the current setting of `getOption("repos")` if this has an element `"CRAN"`: this ensures mirror selection is sticky.

This function requires the R session to be interactive unless `ind` is supplied.

### Value

This function is invoked mainly for its side effect of updating `options("repos")`. It returns (invisibly) the previous `repos` options setting (as a `list` with component `repos`) or `NULL` if no changes were applied.

### Note

This does not set the list of repositories at startup: to do so set `options(repos =)` in a start up file (see help topic Startup).

### See Also

`chooseCRANmirror`, `chooseBioCmirror`, `install.packages`.

### Examples

    ## Not run:
    setRepositories(addURLs =
                    c(CRANxtras = "http://www.stats.ox.ac.uk/pub/RWin"))

    ## End(Not run)

[Package utils version 3.1.2 Index]