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reshape2

Flexibly Reshape Data: A Reboot of the Reshape Package

v1.4.5 · Nov 11, 2025 · MIT + file LICENSE

Description

Flexibly restructure and aggregate data using just two functions: melt and 'dcast' (or 'acast').

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CRAN Check Status

14 OK
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Flavor Status
r-devel-linux-x86_64-debian-clang OK
r-devel-linux-x86_64-debian-gcc OK
r-devel-linux-x86_64-fedora-clang OK
r-devel-linux-x86_64-fedora-gcc OK
r-devel-macos-arm64 OK
r-devel-windows-x86_64 OK
r-oldrel-macos-arm64 OK
r-oldrel-macos-x86_64 OK
r-oldrel-windows-x86_64 OK
r-patched-linux-x86_64 OK
r-release-linux-x86_64 OK
r-release-macos-arm64 OK
r-release-macos-x86_64 OK
r-release-windows-x86_64 OK

Check History

OK 14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE Mar 10, 2026

Reverse Dependencies (802)

imports

ABHgenotypeR ANN2 ASML AgeTopicModels AppliedPredictiveModeling AvInertia BACCT BAwiR BBEST BEKKs BIGr BOLDconnectR BTSPAS BayesCTDesign BayesChange BayesPET BayesPostEst BayesianReasoning BinarybalancedCut CAinterprTools CJIVE CMapViz CNVScope CSTools CalibratR ChemoSpec Cleanet ClimClass ClussCluster ClustAssess Cluster.OBeu ClusterGVis CoDaLoMic CoDiNA CommKern CompositeReliability ConsensusOPLS CoreMicrobiomeR Cubist CytOpT CytoProfile DBHC DDESONN DImodelsMulti DVHmetrics DataExplorer DataVisualizations DeductiveR DescribeDisplay DiscreteDLM DiscreteGapStatistic DramaAnalysis DrugSim2DR EEM EFA.MRFA EZFragility EcoEnsemble EloOptimized EpiDynamics EpiEstim EstimDiagnostics EvaluateCore EvolutionaryGames Evomorph FARS FRK FinCal ForeCA FreqProf FuncNN GCCfactor GCalignR GEInter GISSB GMSimpute GPflexViz GREENeR GRIDCOPULA GeRnika GenHMM1d GowerSom GseaVis HH HLMdiag HMDA HVT HaDeX HetSeq HuraultMisc IATscores IMTest IPV IRTM ITNr InterfaceqPCR Irescale Kmedians L0Learn LOMAR LPRelevance LSX LambertW LatentBMA LeadSense LipidomicsR LongDat MBMethPred MBNMAdose MBNMAtime MCTrend MEAanalysis MF.beta4 MIGEE MIMER MLFS MLZ MPTmultiverse MRFcov MSclassifR MantaID MarketMatching MetaNet MicrobTiSDA MitoHEAR MixSIAR NMADTA NMAoutlier NMF NPBayesImputeCat NPflow NetworkComparisonTest NetworkComparr NeuralNetTools NeuralSens OpenRepGrid.ic OptCirClust OralOpioids PANACEA PAutilities PCADSC PLMIX PSAboot PTXQC PlotPrjNetworks PolicyPortfolios PopComm PopGenHelpR PopGenReport R3port RARfreq RDS REN RGMM RNeXML RSSL RStoolbox RareComb ReSurv RelimpPCR ReporterScore Rirt RobKF Rprofet SCdeconR SEERaBomb SISIR SLEMI SMASH SQMtools SSDM SSplots SUMMER SVMMaj SWMPr SensMap SensoMineR SepTest SeuratExplorer ShinyQuickStarter SixSigma SleepCycles SlideCNA SoundShape SoyNAM SpaCCI StMoMo Superpower TBA TCGAretriever TCIU TSstudio TcGSA TopDom TopKSignal TripleR TropFishR TwoTimeScales UPG UVdose Umatrix VDAP WINS WaverideR WebAnalytics WordListsAnalytics ZetaSuite aLFQ aMNLFA abe actel adace adegenet afex aiRly aifeducation allMT anabel animint2 archeoViz aslib asremlPlus assignPOP atable augmentedRCBD autoGO backShift baker bartXViz bayefdr bayesPop bayesdfa bayesplot bayesvl bikm1 bioclim biomod2 birdscanR blrm bnmonitor boral bspcov burnr cancerGI caret cartograflow cassandRa causalPAF cellWise chem16S childsds chillR chooseGCM clhs climatehealth clmplus clustMD clusterMI cmahalanobis coefplot compareMCMCs compositeReliabilityInNestedDesigns conText connected conos corona cosimmr cplm crctStepdown critpath csa csodata cuRe dartR dartR.base dartR.captive dartR.sim data360r dataprep dbhydroR dbmss dendroNetwork dendroTools denovolyzeR desplot detectRUNS detectXOR dgpsi diffEnrich dlim do dpGMM drimmR drpop dsBase dsa dtwclust duet dynRB dynr dynwrap eSIR easynem eat eatRep ebvcube econullnetr ecr edina elaborator emdi enpls ensembleTax entropart epicR epinetr esviz ethnobotanyR etrm evolqg expDB exreport extraSuperpower exvatools ez fSRM fabisearch fastTopics fastml fcm fdaPOIFD fdapaceShiny fect fitbitViz fmriqa footBayes foqat frailtySurv freesurfer funModeling fuzzylink gWQS gdm geeLite genBaRcode geneticae geocmeans gfoRmulaICE ggaligner ggcorrplot gge ggenealogy ggiraphExtra ggrisk ggscidca ghypernet glmmPen glmmfields grabsampling grandR grapesAgri1 graphPAF grapherator gridsampler gspcr gstar gumboot hJAM handwriter handwriterRF hdflex heatmaply henna hicream hlaR hybridModels hydraulics hydroToolkit hydroroute hydrotoolbox hyfo iCARH iNEXT iNEXT.3D iNEXT.4steps icardaFIGSr icpack ideanet idiffomix idopNetwork immunarch imputeR imputeTestbench inDAGO inTextSummaryTable intRinsic intradayModel iprior irtQ isobxr ivmodel jollofR jtdm kaos kehra kernelPhil kerntools kgraph laketemps lans2r latbias lavaSearch2 lddmm lfproQC likert lipidomeR lolog longreadvqs lsl mFD macrosyntR mandelbrot manhplot mapStats mappoly marmap matricks matrixdist mbsts mcb mcvis mdpeer meconetcomp metadeconfoundR metaprotr mfpp microeco mipplot mispitools mizer mlergm moderate.mediation modnets morse mortAAR motifr mplot mpower mrct mrfDepth mstclustering mudfold multiSA multibreakeR multifear multivar musclesyneRgies mvdalab mvnimpute mxfda nandb ncappc nestedpp netcom netgsa networktools networktree nlpembeds nonmem2R nonsmooth oCELLoc oaxaca obAnalytics onemap opImputation optiSel ordinalLBM otuSummary outreg pRF pacheck panelvar patientProfilesVis patterncausality pcFactorStan pctax pcutils petersenlab phase1PRMD phylter pingers pixiedust plot4fun plotthis plsgenomics polypoly polyqtlR pompom powerbydesign predict3d predictMe prepdat primerTree promor promotionImpact pscore ptycho puzzle pvars qape qdap qgraph quadrupen quantkriging rACMEMEEV rADA rKOMICS rYoutheria randomForestExplainer randomizeR rapportools rbcc rbi rbi.helpers rcontroll rdiversity reddPrec refund.shiny remaCor riverconn rlfsm rmcfs rnaCrosslinkOO rnmamod robCompositions robin romic rrda rrobot rtpcr rusk rwty sValues saeTrafo salmonMSE sampcompR santaR sbm scCATCH scGate scITD scTenifoldKnk scistreer scitb scorecardModelUtils scpi sctransform segclust2d sgdGMF sharpshootR shinyKGode shinystan signed.backbones siland simmr simrel singleCellHaystack sitepickR snplinkage sparsevar spatialAtomizeR speaq specieschrom spectacles spectralR stability structSSI superb survSens svars sysid tashu tcgaViz tcplfit2 telraamStats testarguments testcorr tetraclasse theftdlc thisplot tldr topolow transforEmotion treeDA treediff tsentiment tsiR tvm twig updog vacalibration vannstats veccompare viewpoly visa viscomp vivainsights wTO warpMix weaana welo wevid widyr wpa wppExplorer wql wqspt xsp yorkr zebu

suggests

ALUES ARPobservation AdaptGauss BioMonTools CGGP CimpleG DanielBiostatistics10th DeclareDesign DirectEffects EMJMCMC ENMTools FCPS GeneralizedUmatrix GeneralizedUmatrixGPU IceSat2R IncDTW Information LMMstar Lahman MGLM MOEADr MSEtool MTLR MTPS Markovchart MiscMetabar MortalityTables NitrogenUptake2016 OpenMx PDQutils ParamHelpers Perc ProjectionBasedClustering RDML RGENERATEPREC ROKET RaJIVE ReliabilityTheory Rnvd3 SAMtool SDMtune ShinyWizard SightabilityModel SongEvo Tmisc adept admix agridat aldvmm alluvial analyzer baseballr bmlm bmscstan bodenmiller bootCT bridgedist camtrapR causaldrf classmap clayringsmiletus clustNet codyn colorBlindness complexlm contsurvplot countfitteR csdata cytofan dartR.popgen datplot dominanceanalysis ecostats ecotraj epca explainer fastei fddm firebehavioR fitHeavyTail fitODBOD frequencyConnectedness funData funtimes genekitr germinationmetrics ggforce ghcm glmmTMB hdf5r heplots heuristica hilbertSimilarity iheatmapr irtrees kergp knitrBootstrap lda matrixStrucTest metR metafolio mgc microplot missoNet mlrMBO mosaicData mutSignatures nLTT nc neurobase nser opticskxi outstandR pals pdSpecEst penppml phylosamp polymapR primer prioriactions productplots psd qad r4ss rAmCharts4 ragtop rankrate rayshader refund remotePARTS rfordummies rmoo robustbase robustlmm rpf rrcov3way rrscale rtop scanstatistics sdmpredictors sensitivity simdata socialmixr spNetwork sparklyr sparsesurv spatialwarnings ssdtools stepgbm steprf sumup survout swag tableone tci tcpl tictactoe tidytext treespace tstools tukeytrend vcfR vkR webSDM wxgenR

Dependency Network

Dependencies Reverse dependencies plyr Rcpp stringr AFheritability AurieLSHGaussian DIMORA MicroNiche SKFCPD ScottKnottESD TriMatch clickstream eirm gapmap ifaTools interlineaR mhtboot morph oceanmap +787 more reverse deps reshape2

Version History

new 1.4.5 Mar 10, 2026
updated 1.4.5 ← 1.4.4 diff Nov 11, 2025
updated 1.4.4 ← 1.4.3 diff Apr 8, 2020
updated 1.4.3 ← 1.4.2 diff Dec 10, 2017
updated 1.4.2 ← 1.4.1 diff Oct 21, 2016
updated 1.4.1 ← 1.4 diff Dec 5, 2014
updated 1.4 ← 1.2.2 diff Apr 22, 2014
updated 1.2.2 ← 1.2.1 diff Dec 3, 2012
updated 1.2.1 ← 1.2 diff Jan 9, 2012
updated 1.2 ← 1.1 diff Nov 17, 2011
updated 1.1 ← 1.0 diff Jan 3, 2011
new 1.0 Sep 9, 2010