New posts in R Faq

Cleaning up factor levels (collapsing multiple levels/labels)

How can I view the source code for a function?

Dynamically select data frame columns using $ and a character value

How can I avoid having my R script printed every time I run it?

How do I make a list of data frames?

Installing older version of R package

Logical operators (AND, OR) with NA, TRUE and FALSE

Dealing with TRUE, FALSE, NA and NaN

Warning message: In `...` : invalid factor level, NA generated

Create an ID (row number) column