(R-intro.info)Packages

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13 Packages
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All R functions and datasets are stored in _packages_.  Only when a
package is loaded are its contents available.  This is done both for
efficiency (the full list would take more memory and would take longer
to search than a subset), and to aid package developers, who are
protected from name clashes with other code.  The process of developing
packages is described in Note: Creating R packages.
  Here, we will describe them from a user's point of view.

   To see which packages are installed at your site, issue the command

     > library()

with no arguments.  To load a particular package (e.g., the *boot*
(https://CRAN.R-project.org/package=boot) package containing functions
from Davison & Hinkley (1997)), use a command like

     > library(boot)

   Users connected to the Internet can use the 'install.packages()' and
'update.packages()' functions (available through the 'Packages' menu in
the Windows and macOS GUIs, Note: (R-admin)Installing packages) to
install and update packages.

   To see which packages are currently loaded, use

     > search()

to display the search list.  Some packages may be loaded but not
available on the search list (Note: Namespaces): these will be
included in the list given by

     > loadedNamespaces()

   To see a list of all available help topics in an installed package,
use

     > help.start()

to start the HTML help system, and then navigate to the package listing
in the 'Reference' section.

Standard packages

Contributed packages and CRAN

Namespaces