Tutorials

A slang term that programmers use for themselves is "hacker". This does not mean that they envision themselves breaking into corporate computers. It means they envision themselves trying a lot [...]

Some people have a hard time coming to terms with vectorization. If it is hard for you, you may be trying to make it more complicated than it is. The [...]

The technical term for magic is "object orientation". Object orientation is voluntary in R, and in fact there are two different versions of it in R. They are called -- [...]

This page has the following sections: Base graphics grid lattice ggplot2 Resources Producing a plot in R for your own consumption is generally very easy. If you want complete control [...]

When there is an error that you don't understand, you are almost certainly making an assumption that is not true. Check your assumptions. Reacting to an error When you get [...]

This page has the following sections: Saving Removing Using saved files Writing Remember that any files that you create with commands on this page will be put into R's working [...]

This page has the following sections: Listing objects Numbers in square brackets Keep it simple May not be simple Listing objects The command: > ls() lists all of the objects [...]

Resources The data basics section of the Portfolio Probe cookbook This has some examples of reading data. An Introduction to R This includes a chapter on reading data from files. [...]

This page has the following sections: Value and Side Effects Three types of function Operator precedence Some simple data creation Resources Value and Side Effect There are two possible results [...]

This page has the following sections: Generation of normals Two types of uniform Random permutations Seed setting Probability distributions Pseudorandomness Resources Generation of normals If you want to generate 200 [...]