2 R statistical program
R is an open source statistical program and coding language.
Robust user community of coders & problem solvers.
Everything that exists is an object.
Everything that happens is a function call.
— John Chambers
2.2 Functions & packages
A block of code that performs a particular task or set of tasks. A function has a name, arguments, a body (code), and a return value.
Change-able inputs to a function.
A portable collection of R functions.
2.2.4 Function & package documentation:
- Help files:
- Package manuals
Markdown & bookdown