The goal of tl is to provide an R equivalent to the tldr command line tool, a community-contributed set of quick reference guides for R functions.

“Perfection is achieved not when there is nothing more to add, but when there is nothing left to take away” - Antoine de Saint-Exupéry

Briefly forgotten how a function works? Don’t want to scroll through a long help file to find the example usage? You need tl;dr!


You can install the current version of tl from github with:



Here are some basic examples of how to use tl:

Use the dr function to find a help page

fits a linear model

- fits a linear model of y dependent on x1 and x2
  m1 <- lm(y ~ x1 + x2)

- fits on data in data frame df
  m1 <- lm(y ~ x1 + x2, data = df)

- fits model of y on categorical variable xc
  m1 <- lm(y ~ as.factor(xc), data = df)

- print model

converts data from wide to long

- collapse columns x1 to x5 into 5 rows
  gather(data, key = "key", value = "value", x1:x5)

- collapse all columns
  gather(data, key = "key", value = "value")

Page you are looking for does not exist? Use the create_page function to make one! Please follow the instructions to keep it brief.

Want to submit your new page to the tl package? Use the submit_page function to get instructions on how to add your help page to tl.