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What is R
• R is a programming language which is geared towards using a statistical approach and graphics
• Statisticians and data miners use R for statistical software and data analysis
• R is an implementation of the S programming language in combination with lexical scoping
• R programming language was created by Ross Ihaka and Robert Gentleman
• R was created by the two creators at the University of Auckland in New Zealand
What is R
• The letter R was chosen to represent the programming language because of the first letters of the names of the creators
• R is available for free under the GNU general public license.
• R uses command line interface
• There are also versions that have the capability of providing graphical front-ends.
• The command line interpreter is used to interpret the R language
What is R
• R Can perform:• Linear modeling
• Nonlinear modeling
• Classical statistical tests
• Time-series analysis
• Classification
• Clustering
• R can be modified to include functions and extentions
What is R
• Many of the functions are written in R which makes it easier for users to use R’s algorithmic choice mode
• C, C++ and Fortran code can be linked and used in advanced functions
• Advanced users can implement C, C++, Java, .NET, or Python to make changes to R
• Since R has been inspired by S it has a lot of object-oriented programming
• R is able to manufacture static graphics which makes it easier to generate graphs for publications
What is R
• R is also able to generate mathematical symbols since it able to create static graphics
• Dynamic or interactive graphics can be implemented by purchasing additional packages.
• R is used using an interpreter command line
• For example if a user types in 2+2 then the command line prompt will return back 4 as the answer
What is R
• With the usage of R, the users are able to download and use methods shared amongst other statisticians.
• The information shared by other users in R is free to use.
• Representing complex data into easy to use and understand the data is what R helps users do.
• By usage of data visualization the users are able to create charts and graphs which are not boring.
• With R the users are also able to implement 3-D surfaces making the data more lively.
What is R
• The graphs and data that have been used in top companies include; • New York Times
• The Economist
• FlowingData Blog
• Users are able to pick up on using R faster than the results given by legacy statistical software
• R also lets users mix and match graphs and charts according to their liking
• R scripts are easily automated and prompt research and production deployments
What is R
• Since R is an open source, the users are able to share ideas and work with millions of users worldwide
• By sharing ideas and work and keeping this an open source, the programming language R is able to get recognized and widely used
• Once the statisticians put their mind together to come up with an idea it gets packaged and is able to be used by users
What is R
• R is a fully planned and a functioning system.
• It has flexible tools for users with little knowledge or tools for experts in the field
• There are about 8 packages which are supported by R Distribution community
• Other packages can be found on CRAN which has many different packages
• Modern statistical packages can also be found on CRAN
What is R
• Many of the updates and information can be found on r-project
• The updates are always announced to keep the users informed of the changes
• The current presidents of R are Duncan Murdoch, and Martyn Plummer
• R also has manuals on their website for users to learn on their own
References• http://en.wikipedia.org/wiki/R_%28programming_language%29
• http://www.revolutionanalytics.com/what-r
• http://www.r-project.org/
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