data.table: Extension of Data.frame

Fast aggregation of large data (e.g. 100GB in RAM), fast ordered joins, fast add/modify/delete of columns by group using no copies at all, list columns and a fast file reader (fread). Offers a natural and flexible syntax, for faster development.

Version: 1.9.6
Depends: R (≥ 2.14.1)
Imports: methods, chron
Suggests: ggplot2 (≥ 0.9.0), plyr, reshape, reshape2, testthat (≥ 0.4), hexbin, fastmatch, nlme, xts, bit64, gdata, GenomicRanges, caret, knitr, curl, zoo, plm
Published: 2015-09-19
Author: M Dowle, A Srinivasan, T Short, S Lianoglou with contributions from R Saporta, E Antonyan
Maintainer: Matt Dowle <mattjdowle at>
License: GPL-2 | GPL-3 [expanded from: GPL (≥ 2)]
NeedsCompilation: yes
Materials: README
In views: Finance, HighPerformanceComputing
CRAN checks: data.table results


Reference manual: data.table.pdf
Vignettes: Vignette Title
Vignette Title
Vignette Title
Vignette Title
Frequently asked questions
Quick introduction
Package source: data.table_1.9.6.tar.gz
Windows binaries: r-devel:, r-release:, r-oldrel:
OS X Mavericks binaries: r-release: data.table_1.9.6.tgz, r-oldrel: data.table_1.9.6.tgz
Old sources: data.table archive

Reverse dependencies:

Reverse depends: AF, ARTP2, BuyseTest, cffdrs, cvAUC, drgee, edgeRun, EurosarcBayes, GenomicTools, greport, ie2misc, iemisc, JWileymisc, lookupTable, LSPFP, musica, oec, orgR, panelaggregation, partools, psidR, Rbitcoin, robCompositions, sdcMicro, simPop, simstudy, splitstackshape, surveyplanning, synthACS, tcpl, ttwa, validateRS, vardpoor, VIM, word.alignment
Reverse imports: AFM, alakazam, aLFQ, APSIM, bedr, benford.analysis, biomartr, blscrapeR, brainGraph, caretEnsemble, CatEncoders, Causata, ChannelAttributionApp, chromer, clickstream, DataCombine, datadr, DataExplorer, dataview, dtplyr, ecoengine, edeaR, eeptools, eiCompare, emil, emuR, extracat, FactoMineR, FAOSTAT, fbRads, FedData, Fgmutils, freqweights, gems, genderizeR, getlandsat, githubinstall, GSODR, gunsales, hisse, Hmisc, hoardeR, inbreedR, Information, IPtoCountry, ITGM, joinXL, Kmisc, lar, ldamatch, livechatR, lllcrc, LogisticDx, Luminescence, mapview, metaMix, mlr, mregions, msmtools, mtconnectR, mvQuad, ndjson, noncompliance, OptiQuantR, optiRum, originr, PAC, partialAR, pcrsim, PGRdup, polmineR, popEpi, PopGenReport, PSF, pxweb, qdapTools, quanteda, R6Frame, RAM, rAmCharts, randomNames, rangeMapper, RAPIDR, rBayesianOptimization, RbioRXN, Rdice, rdrop2, RecordLinkage, REDCapR, repmis, rerddap, retrosheet, rfisheries, rFTRLProximal, rgbif, rio, ritis, rlist, RndTexExams, RNewsflow, rnpn, rplexos, RxnSim, SafeQuant, SciencesPo, sdcTable, sentimentr, SetRank, SGP, SGPdata, shazam, simcausal, simPH, SocialMediaLab, solarius, SpaDES, SpATS, spocc, squid, statar, StatMeasures, stdReg, stplanr, strvalidator, survMisc, SWMPr, tableMatrix, taxize, tcR, text2vec, TideCurves, TideTables, tmlenet, toxboot, traits, translateSPSS2R, treemap, trelliscope, TSTr, xgboost, yCrypticRNAs
Reverse suggests: assertive.types, bikeshare14, checkmate, csvy, ggswissmaps, googleVis, ie2miscdata, iemiscdata, installr, itsadug, Lahman, lava, Matrix.utils, NEArender, ProjectTemplate, rbokeh, rpivotTable, rtop, seleniumPipes, sticky, taRifx, vaersNDvax, vaersvax, Xmisc
Reverse enhances: dendextend, repr


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