R is a programming language and software environment for statistical computing and graphics. R is widely used for statistical software development and data analysis.R provides a wide variety of statistical (linear and nonlinear modeling, classical statistical tests, time-series analysis, classification, clustering, and others) and graphical techniques.R is a pen source statistical analysis program which is widely used in bioinformatics.
First tutorial on the statistical software R covers: How to get R Variables Simple data types Operations Functions How to get help
Second tutorial on the statistical software R covers: Vectors Lists Data Frames Tables Basic creation and modification
Third tutorial on the statistical software R covers: Index vectors Index lists Index data frames Index tables Index by conditions
Fourth tutorial on the statistical software R covers: Read vectors from file Write vectors to file Read data frames from clipboard Read data frames from file Write data frames to file