Category «R FAQS»

R FAQs about R Basics

Here are R FAQS about R Basics. Questions and answers will be updated frequently and on the demand of visitors.

Question: On what Operating Systems R Language can Run.
Answer: R Language can run on Unix, Linux and Windows Operating System.

Question: On what machine R can Run?
Answer: R is developed for Unix-like, Windows and Mac families of operating systems. The current version of R Language is configured to run on machine such as cpu-linux-gnu for i386, amd64, alpha, arm/armel, hppa, ia64, m68k, mips/mipsel, powerpc, s390 and sparc CPUs, i386-hurd-gnu, cpu-kfreebsd-gnu for i386 and amd64, powerpc-apple-darwin, mips-sgi-irix, i386-freebsd, rs6000-ibm-aix and sparc-sun-solaris.

Question: What is the current version of R?
Answer: The current released version of R is 3.2.2.

Question: How and where from R can be obtained?
Answer: Sources, binaries and documentation of R language can be obtained via Comprehensive R Archive Network (CRAN).

Question: How to install R on Windows Operating System?
Answer: The “bin/windows” directory of CRAN site contains binaries for a base distribution and add-on packages from CRAN to run on Windows XP, Vista, Windows 7 etc (32-bit or 64bit versions of Windows) on ix86 and x86_64 chips.

Question: What is CRAN?
Answer: The CRAN is “Comprehensive R Archive Network”. CRAN is a collection of sites which carry identical material, consisting R distribution(s), the contributed extensions, documentation for R and binaries.

The CRAN master site is at WU (Wirtschaftsuniversität Wien) in Austria.

The mirros are include    (Wirtschaftsuniversität Wien, Austria)    (University of Melbourne, Australia)    (Universidade Federal do Paraná, Brazil)    (ETH Zürich, Switzerland)    (, Aalborg, Denmark)    (Spanish National Research Network, Madrid, Spain)    (Universidade do Porto, Portugal)    (U of Bristol, United Kingdom)


Reference: Hornik, K., (2015). R FAQs,

R FAQS about Packages

Question: What version of R do I run on my computer or laptop?

Answer: To get the information about version of R, sue the following command at R prompt.

# get version of R

You will get result like
[1] “R version 3.2.1 (2015-06-18)”

Question: What R packages are already installed?

Answer: To get a list of installed packages in R, write “library()” without quotation marks at the R prompt. R will first list all of the packages installed in local R directory of your computer system and then it will list all packages installed globally on your computer system.

# list all R packages installed

You would get results like (note that results below are given as example only, its not a complete list)

Packages in library ‘C:/Users/abcd/Documents/R/win-library/3.2’::
combinat     combinatorics utilities
proftools      Output Processing Tools for R
rgl                3D visualization device system (OpenGL)

Packages in library ‘C:/Program Files/R/R-3.2.1/library’:
KernSmooth      Functions for kernel smoothing for Wand & Jones (1995)
MASS                Support Functions and Datasets for Venables and Ripley’s MASS



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