A Tutorial Introduction to R

Aaron A. King, Stu Field, Ben Bolker, Steve Ellner

• 1 How to use this document
• 2 What is R ?
• 3 Getting started with R
  • 3.1 Installing R on your computer
  • 3.2 Starting R
  • 3.3 Stopping R
• 4 Interactive calculations
• 5 The help system
• 6 A first interactive session
  • 6.1 Descriptive statistics
  • 6.2 Linear regression
• 7 Statistics in R
• 8 The R package system
• 9 Data structures in R
  • 9.1 Vectors
    • 9.1.1 Element recycling
    • 9.1.2 Functions for creating vectors
    • 9.1.3 Vector indexing
    • 9.1.4 Logical operations
    • 9.1.5 More on vector indexing
  • 9.2 Matrices and arrays
    • 9.2.1 Creating matrices
    • 9.2.2 cbind and rbind
    • 9.2.3 Matrix indexing
  • 9.3 Arrays
  • 9.4 Factors
  • 9.5 Lists
  • 9.6 Data frames
• 10 Probability distributions in R
• 11 Scripts and data files
• 12 Looping in R
  • 12.1 for loops
  • 12.2 while loops
  • 12.3 repeat loops
• 13 Functions and environments
  • 13.1 Definitions and examples
  • 13.2 Function scope
  • 13.3 Nested functions and environments
• 14 The apply family of functions
  • 14.1 List apply: lapply
  • 14.2 Sloppy list apply: sapply
  • 14.3 Multiple-list apply: mapply
  • 14.4 Array apply: apply
  • 14.5 Table apply: tapply
  • 14.6 sapply with expected result: vapply
• 15 Vectorized functions vs loops
• 16 Acknowledgments
• References