README.md

data.table

CRAN status R-CMD-check AppVeyor build status Codecov test coverage GitLab CI build status downloads CRAN usage BioC usage indirect usage

data.table provides a high-performance version of base R's data.frame with syntax and feature enhancements for ease of use, convenience and programming speed.

Why data.table?

Features

Installation

install.packages("data.table")

# latest development version that has passed all tests:
data.table::update_dev_pkg()

See the Installation wiki for more details.

Usage

Use data.table subset [ operator the same way you would use data.frame one, but...

library(data.table)
DT = as.data.table(iris)

# FROM[WHERE, SELECT, GROUP BY]
# DT  [i,     j,      by]

DT[Petal.Width > 1.0, mean(Petal.Length), by = Species]
#      Species       V1
#1: versicolor 4.362791
#2:  virginica 5.552000

Getting started

Cheatsheets

Community

data.table is widely used by the R community. It is being directly used by hundreds of CRAN and Bioconductor packages, and indirectly by thousands. It is one of the top most starred R packages on GitHub, and was highly rated by the Depsy project. If you need help, the data.table community is active on StackOverflow.

Stay up-to-date

Contributing

Guidelines for filing issues / pull requests: Contribution Guidelines.



Rdatatable/data.table documentation built on July 21, 2022, 10:05 p.m.