What is R?

R in a nutshell

  • a free software for data analysis
  • an interpreted programming language, derived from `S-plus’
  • initially developed by R. Ihaka and R. Gentleman (1996)
  • currently developed by the R Core Team (20 people)
  • largest collection of tools for data analysis (1,000s of contributors)

Where can you get it?

What can you do with it?

  • basic statistics: statistical tests, linear modelling, multivariate analysis
  • spatial statistics: GIS, mapping, clustering
  • graph theory: social sciences, network analysis, graph algorithm
  • genetics: phylogenetic trees, genetic markers, genomics
  • epidemiology!
  • much more: see task views cran.r-project.org/web/views/

What does “free” mean?

  • Freedom = ability to make informed decisions
  • you don’t pay for it
  • the code is accessible by anyone
  • anyone can use, modify and share the code

Getting started