ctv-client.RdClient-side tools for installing CRAN task views.
ctv(view, repos = NULL, ...)
available.views(repos = NULL, ...)
install.views(views, coreOnly = FALSE, repos = NULL, ...)
update.views(views, coreOnly = FALSE, repos = NULL, lib.loc = NULL, filters = NULL, ...)
download.views(views, destdir, coreOnly = FALSE, repos = NULL, ...)
# S3 method for ctv
print(x, packagelist = TRUE, ...)
# S3 method for ctvlist
print(x, packagelist = FALSE, ...)character vector with the short names of the task views whose
associated packages should be downloaded and installed. Alternatively,
views can also be an object of class "ctvlist" (as returned
by available.views) or an object of class "ctv" (i.e., an element
of a "ctvlist").
logical. Should all packages or only core packages be installed?
(recycled to the same length as views)
character, the base URL of the repository. By default getOption("repos")
is tried and otherwise getOption("CRAN") is used.
character vector describing the location of R library trees to search through (and update packages therein).
a character vector or list to filter
available.packages, e.g., for filtering with respect to
operating system type or free and open-source software license.
directory where downloaded packages are to be stored.
further arguments passed to install.packages or
download.packages respectively.
an object of class "ctv" or "ctvlist" respectively.
logical. Should the packagelist also be printed?
install.views queries the file Views.rds located at
the src/contrib directory of repos and then simply calls
install.packages to install the packages associated with the
view specified. For each view it can be specified whether all packages or
only the core packages should be installed.
available.views returns the list of task views currently
available in the file Views.rds. In earlier versions, this was called
CRAN.views (which still works and provides the same functionality).
update.views queries which packages from a view are not yet
installed (using installed.packages) and which of the installed
packages are older than the packages available (using available.packages).
It subsequently installs only the packages that are not current or not
installed yet.
download.views works exactly as install.views except that it calls
download.packages instead of install.packages.
For a more detailed description of the arguments see also install.packages.
available.views returns an object of class "ctvlist" of the
available task views whose elements are of class "ctv".
install.views and update.views have no return value.
if (FALSE) {
## query only a single view (with known name)
ctv("Econometrics")
## extract corresponding citation
ctv("Econometrics")$citation
## query list of CRAN task views available
available.views()
## install Econometrics view
install.views("Econometrics")
## only with core packages
install.views("Econometrics", coreOnly = TRUE)
## update Econometrics view (i.e. only packages that are not current anyway)
update.views("Econometrics")
}