Contents

• S-PLUS Data Objects
  • Constants
  • Vectors
    • logical vectors
    • Selection using logical vectors
  • Matrices
    • scalar operations on matrices
    • Special matrix functions
  • Arrays
  • Lists
• S-PLUS function objects
  • Writing Functions
  • Functions with named arguments
  • Developing functions using Micro-emacs
• S-PLUS language features
  • if
  • switch
  • loops
  • BUT -- think Vector First
  • ifelse
• Reading and writing data
  • reading data
  • Writing results
• References
• About this document ...