| zpackages {base} | R Documentation |
.packages returns information about package availability.
.packages(all.available = FALSE, lib.loc = NULL)
all.available |
logical; if TRUE return a character vector
of all available packages in lib.loc. |
lib.loc |
a character vector describing the location of R
library trees to search through, or NULL. The default value
of NULL corresponds to all libraries currently known. |
.packages() returns the names of the currently
attached packages invisibly whereas
.packages(all.available = TRUE) gives (visibly) all
packages available in the library location path lib.loc.
If versioned installs have been used, the names returned will be of the
form pkgname_version.
For a package to be regarded as being available it must have a
‘DESCRIPTION’ file containing a valid version field.
A character vector of package base names, invisible unless
all.available = TRUE.
R core;
Guido Masarotto for the all.available=TRUE part of
.packages.
(.packages()) # maybe just "base"
.packages(all.available = TRUE) # return all available as character vector
require(splines)
(.packages()) # "splines", too
detach("package:splines")