data.table package provides an enhanced version of
data.frame that allows you to do blazing fast data manipulations.
data.table is being used in different fields such as finance and genomics, and is especially useful for those of you that are working with large data sets (e.g. 1GB to 100GB in RAM).
Although its typical syntax structure is not hard to master, it is unlike other things you might have seen in R. Hence the reason to create this cheat sheet. DataCamp’s
data.table cheat sheet is a quick reference for doing data manipulations in R with the
data.table package, and is a free-for-all supplement to DataCamp’s interactive course Data Analysis the data.table Way.
The cheat sheet will guide you from doing simple data manipulations using
i, j, by syntax, to chaining expressions, to using the famous
set()-family. You can learn more about data.table at DataCamp.com.