Difference between revisions of "R"

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run {{ic|help(startup)}} to read the documentation about system file  configuration, {{ic|help()}} for the on-line help,{{ic|help.start()}} for the HTML browser interface to help, {{ic|demo()}} for some demos and {{ic|q()}} to close the session and quit.
 
run {{ic|help(startup)}} to read the documentation about system file  configuration, {{ic|help()}} for the on-line help,{{ic|help.start()}} for the HTML browser interface to help, {{ic|demo()}} for some demos and {{ic|q()}} to close the session and quit.
  
When closing the session, you will be prompted : {{ic|Save workspace Image ?[y/n/c]}}. The ''workspace'' is your current working environment, include any user-defined objects and command history. The saved image will be automatically reloaded the next time {{ic|R}} is started. You can manually save the workspace at any time in the session with the {{ic|save.image()}} command.
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When closing the session, you will be prompted : {{ic|Save workspace Image ?[y/n/c]}}. The ''workspace'' is your current working environment and include any user-defined objects. The saved image will be automatically reloaded the next time {{ic|R}} is started. You can manually save the workspace at any time in the session with the {{ic|save.image()}} command.
  
 
=== Installing R packages ===
 
=== Installing R packages ===

Revision as of 17:14, 27 September 2013

Tango-document-new.pngThis article is a stub.Tango-document-new.png

Notes: please use the first argument of the template to provide more detailed indications. (Discuss in Talk:R#)

R is a free software environment for statistical computing and graphics (http://www.r-project.org/).

Installation

Install the r package available in the official repositories

Some external packages may require to be compile in Fortran as well, so installing the gcc-fortran can be a good idea

Initial configuration

The main main script is usr/bin/R, basic packages are found in $HOME/R/ and system-wide configuration files in /etc/R/.

Make sure R has been installed correctly by running the following command in a terminal to start a R session:

$ R
Note: Use Shift+u for the command (some terminals use the r letter to repeat the last entered command). Once in your R session, the prompt will change to >

run help(startup) to read the documentation about system file configuration, help() for the on-line help,help.start() for the HTML browser interface to help, demo() for some demos and q() to close the session and quit.

When closing the session, you will be prompted : Save workspace Image ?[y/n/c]. The workspace is your current working environment and include any user-defined objects. The saved image will be automatically reloaded the next time R is started. You can manually save the workspace at any time in the session with the save.image() command.

Installing R packages

There are many add-on R packages, which can be browsed on The R Website.. They can be installed from within R using the R install.packages command. It is not necessary to be superuser or have root privileges when doing this -- R can install its packages locally for the individual user. This is the safest way to install R packages and won't conflict with the pacman package management.

To set the location of your local R package library, create a ~/.Renviron file and append the following line:

R_LIBS_USER=/path/to/directory/R/packages

Upgrading R packages

> update.packages(ask=FALSE)

Or when you also need to rebuild packages which were built for an older version:

> update.packages(ask=FALSE,checkBuilt=TRUE)

Adding a graphical frontend to R

The linux version of R does not include a graphical user interface. However, third-party user interfaces for R are available, such as R commander and RKWard.

R Commander frontend

R Commander is a popular user interface to R. There is no Arch linux package available to install R commander, but it is an R package so it can be installed easily from within R. R Commander requires Tk:

# pacman -S tk

To install R Commander, run 'R' from the command line. Then type:

> install.packages("Rcmdr", dependencies=TRUE)

This can take some time.

You can then start R Commander from within R using the library command:

> library("Rcmdr")

RKWard frontend

RKWard is an open-source frontend which allows for data import and browsing as well as running common statistical tests and plots. You can install rkwardAUR from AUR.

Rstudio IDE

RStudio an open-source R IDE. It includes many modern conveniences such as parentheses matching, tab-completion, tool-tip help popups, and a spreadsheet-like data viewer.

Install rstudio-desktop-binAUR (binary version from the Rstudio project website) or rstudio-desktop-gitAUR (development version) from AUR.

The R library path is often configured with the R_LIBS environment variable. RStudio ignores this, so the user must set R_LIBS_USER in ~/.Renviron, as documented above.