The document discusses how R is used at The New York Times Graphics desk for various tasks like text analysis, spatial smoothing, correlations, live election forecasts, and seasonal adjustment. It provides examples of code for passing data between R and JavaScript, running R scripts asynchronously from JavaScript, and using Makefiles with R. It also notes some potential issues like packages not being installed that could cause errors when running R code.

1. Using R at NYT Graphics
Josh Katz
Graphics Editor
The New York Times

4. Text analysis

5. Spatial smoothing

6. Correlations

7. Live election forecasts

8. Seasonal adjustment

11. R
do.call(rep, input) %>%
strsplit(NULL) %>%
sapply(sample) %>%
apply(2, paste, collapse = "")
final output from R returns
to javascript as parsed JSON
Javascript
var R = require(“r-script");
var out = R("example.R")
.data("hello world", 20)
.callSync();
data is passed to R
as variable input

12. R
attach(input[[1]])
df %>%
mutate(group = cut(rating, nGroups)) %>%
group_by(group) %>%
summarize_each(funs_(fxn)) %>%
transmute(group = as.character(group),
rating, advance)
Javascript
var R = require(“r-script");
R("example/ex-async.R")
.data({df: attitude,
nGroups: 3,
fxn: "mean" })
.call(function(err, d) {
if (err) throw err;
console.log(d);
});

13. Using R with Makefiles

15. What could go wrong?

17. > source(“r-work/fail.R”)
Error in library(readr) : there is no package called ‘readr’

18. Error in library(kissmig) :
there is no package called
‘kissmig’
Error in library(lazyData) :
there is no package called
‘lazyData’
Error in
library(ecotoxicology) : there
is no package called
‘ecotoxicology’
Error in
library(AdaptiveSparsity) :
there is no package called
‘AdaptiveSparsity’
Error in library(FindMinIC) :
there is no package called
‘FindMinIC’
Error in library(geoaxe) : there
is no package called ‘geoaxe’
Error in library(JM) : there is
no package called ‘JM’
Error in library(cvxbiclustr) :
there is no package called
‘cvxbiclustr’
Error in library(cwm) : there is
no package called ‘cwm’
Error in library(SEL) : there is
no package called ‘SEL’
Error in library(ForIT) : there
is no package called ‘ForIT’
Error in library(solidearthtide)
: there is no package called
‘solidearthtide’
Error in library(MEMSS) : there
is no package called ‘MEMSS’
Error in library(mirt) : there
is no package called ‘mirt’
Error in library(marked) : there
is no package called ‘marked’
Error in library(luzlogr) :
there is no package called
‘luzlogr’
Error in library(corrgram) :
there is no package called
‘corrgram’
Error in library(dynCorr) :
there is no package called
‘dynCorr’
Error in library(DiceOptim) :
there is no package called
‘DiceOptim’
Error in library(LCA) : there is
no package called ‘LCA’
Error in library(ldbounds) :
there is no package called
‘ldbounds’
Error in library(plotpc) : there
is no package called ‘plotpc’
Error in library(ppiPre) : there
is no package called ‘ppiPre’
Error in library(hcp) : there is
no package called ‘hcp’
Error in library(CMC) : there is
no package called ‘CMC’
Error in library(randstr) :
there is no package called
‘randstr’
Error in library(clinfun) :
there is no package called
‘clinfun’
Error in library(AutoModel) :
there is no package called
‘AutoModel’
Error in library(SIMMS) : there
is no package called ‘SIMMS’
Error in library(audiolyzR) :
there is no package called
is no package called ‘prob’
Error in library(seas) : there
is no package called ‘seas’
Error in library(CopyDetect) :
there is no package called
‘CopyDetect’
Error in library(ABHgenotypeR) :
there is no package called
‘ABHgenotypeR’
Error in
library(gettingtothebottom) :
there is no package called
‘gettingtothebottom’
Error in library(flowDiv) :
there is no package called
‘flowDiv’
Error in library(Sequential) :
there is no package called
‘Sequential’
Error in library(smoothHR) :
there is no package called
‘smoothHR’
Error in library(iemiscdata) :
there is no package called
‘iemiscdata’
Error in
library(RootsExtremaInflections)
: there is no package called
‘RootsExtremaInflections’
Error in library(molaR) : there
is no package called ‘molaR’
Error in library(KRLS) : there
is no package called ‘KRLS’
Error in library(nls2) : there
is no package called ‘nls2’
Error in library(SAMURAI) :
there is no package called
‘SAMURAI’
Error in library(crimelinkage) :
there is no package called
‘crimelinkage’
Error in library(DiffCorr) :
there is no package called
‘DiffCorr’
Error in library(micromap) :
there is no package called
‘micromap’
Error in library(Matrix.utils) :
there is no package called
‘Matrix.utils’
Error in library(apcluster) :
there is no package called
‘apcluster’
Error in library(bnclassify) :
there is no package called
‘bnclassify’
Error in library(ctsem) : there
is no package called ‘ctsem’
Error in library(fgpt) : there
is no package called ‘fgpt’
Error in library(refset) : there
is no package called ‘refset’
Error in library(ParallelPC) :
there is no package called
‘ParallelPC’
Error in library(muhaz) : there
is no package called ‘muhaz’
Error in library(relaxnet) :
there is no package called
‘relaxnet’
Error in library(qualityTools) :
there is no package called
‘qualityTools’
Error in
library(PerformanceAnalytics) :
there is no package called
‘PerformanceAnalytics’
‘deconstructSigs’
Error in library(kzs) : there is
no package called ‘kzs’
Error in library(heritability) :
there is no package called
‘heritability’
Error in library(blme) : there
is no package called ‘blme’
Error in library(dkDNA) : there
is no package called ‘dkDNA’
Error in library(NBPSeq) : there
is no package called ‘NBPSeq’
Error in library(profdpm) :
there is no package called
‘profdpm’
Error in library(reports) :
there is no package called
‘reports’
Error in library(wikibooks) :
there is no package called
‘wikibooks’
Error in library(xgboost) :
there is no package called
‘xgboost’
Error in library(EloChoice) :
there is no package called
‘EloChoice’
Error in library(shinyAce) :
there is no package called
‘shinyAce’
Error in library(PubBias) :
there is no package called
‘PubBias’
Error in library(ProfessR) :
there is no package called
‘ProfessR’
Error in library(gpmap) : there
is no package called ‘gpmap’
Error in library(fracdiff) :
there is no package called
‘fracdiff’
Error in library(paran) : there
is no package called ‘paran’
Error in library(rjags) : there
is no package called ‘rjags’
Error in library(gazepath) :
there is no package called
‘gazepath’
Error in library(jomo) : there
is no package called ‘jomo’
Error in library(caret) : there
is no package called ‘caret’
Error in library(smcUtils) :
there is no package called
‘smcUtils’
Error in library(pdmod) : there
is no package called ‘pdmod’
Error in library(LCAextend) :
there is no package called
‘LCAextend’
Error in library(qcr) : there is
no package called ‘qcr’
Error in library(boxr) : there
is no package called ‘boxr’
Error in library(optCluster) :
there is no package called
‘optCluster’
Error in library(srd) : there is
no package called ‘srd’
Error in library(Deducer) :
there is no package called
‘Deducer’
Error in library(dendsort) :
there is no package called
‘dendsort’
Error in library(dlmap) : there
is no package called ‘dlmap’
in
y(KernSmoothIRT) : there
package called
moothIRT’
in library(rspa) : there
package called ‘rspa’
in library(dse) : there is
kage called ‘dse’
in library(emdist) : there
package called ‘emdist’
in library(data.tree) :
is no package called
tree’
in
y(UScensus2000cdp) : there
package called
sus2000cdp’
in library(superMDS) :
is no package called
MDS’
in library(PROFANCY) :
is no package called
NCY’
in
y(CrypticIBDcheck) : there
package called
icIBDcheck’
in library(FREGAT) : there
package called ‘FREGAT’
in library(probemod) :
is no package called
mod’
in library(gitter) : there
package called ‘gitter’
in library(phangorn) :
is no package called
orn’
in library(NormPsy) :
is no package called
sy’
in library(gRbase) : there
package called ‘gRbase’
in library(gRapHD) : there
package called ‘gRapHD’
in library(redcapAPI) :
is no package called
pAPI’
in library(Quandl) : there
package called ‘Quandl’
in library(sprinter) :
is no package called
ter’
in library(cytoDiv) :
is no package called
iv’
in library(rchess) : there
package called ‘rchess’
in library(BioStatR) :
is no package called
atR’
in library(lsbclust) :
is no package called
ust’
in library(tmvnsim) :
is no package called
im’
in
y(Segmentor3IsBack) :
is no package called
ntor3IsBack’
in library(rrBLUP) : there
package called ‘rrBLUP’
in library(Sofi) : there
package called ‘Sofi’
in library(RANKS) : there
package called ‘RANKS’
in library(entropart) :
is no package called
is no package called ‘datacheck’
Error in library(MNM) : there is no
package called ‘MNM’
Error in library(VBmix) : there is
no package called ‘VBmix’
Error in library(FCMapper) : there
is no package called ‘FCMapper’
Error in library(ParentOffspring) :
there is no package called
‘ParentOffspring’
Error in library(LRcontrast) :
there is no package called
‘LRcontrast’
Error in library(PabonLasso) :
there is no package called
‘PabonLasso’
Error in library(cna) : there is no
package called ‘cna’
Error in library(CALF) : there is
no package called ‘CALF’
Error in library(RcmdrPlugin.MA) :
there is no package called
‘RcmdrPlugin.MA’
Error in library(crimCV) : there is
no package called ‘crimCV’
Error in library(SAPP) : there is
no package called ‘SAPP’
Error in library(pystr) : there is
no package called ‘pystr’
Error in library(oc) : there is no
package called ‘oc’
Error in library(GAMBoost) : there
is no package called ‘GAMBoost’
Error in library(bisectr) : there
is no package called ‘bisectr’
Error in library(bodenmiller) :
there is no package called
‘bodenmiller’
Error in library(SoftClustering) :
there is no package called
‘SoftClustering’
Error in library(fptdApprox) :
there is no package called
‘fptdApprox’
Error in library(choroplethrMaps) :
there is no package called
‘choroplethrMaps’
Error in library(elec.strat) :
there is no package called
‘elec.strat’
Error in library(RTextureMetrics) :
there is no package called
‘RTextureMetrics’
Error in library(gensemble) : there
is no package called ‘gensemble’
Error in library(inarmix) : there
is no package called ‘inarmix’
Error in library(rvgtest) : there
is no package called ‘rvgtest’
Error in library(svKomodo) : there
is no package called ‘svKomodo’
Error in library(twitteR) : there
is no package called ‘twitteR’
Error in library(spcosa) : there is
no package called ‘spcosa’
Error in library(qtutils) : there
is no package called ‘qtutils’
Error in library(informR) : there
is no package called ‘informR’
Error in library(mousetrack) :
there is no package called
‘mousetrack’
Error in library(GMCM) : there is
no package called ‘GMCM’
Error in library(NetComp) : there
is no package called ‘NetComp’
Error in library(linERR) : there is
no package called ‘linERR’
Error in library(gnm) : there is no
package called ‘gnm’
Error in library(robeth) : there is
no package called ‘robeth’
Error in library(bootRes) : there
is no package called ‘tidyr’
Error in library(mosaicData) :
there is no package called
‘mosaicData’
Error in library(PogromcyDanych)
: there is no package called
‘PogromcyDanych’
Error in library(SeleMix) :
there is no package called
‘SeleMix’
Error in library(flacco) : there
is no package called ‘flacco’
Error in library(ngspatial) :
there is no package called
‘ngspatial’
Error in library(wpp2015) :
there is no package called
‘wpp2015’
Error in library(groupRemMap) :
there is no package called
‘groupRemMap’
Error in library(ETAS) : there
is no package called ‘ETAS’
Error in library(bmrm) : there
is no package called ‘bmrm’
Error in library(pegas) : there
is no package called ‘pegas’
Error in library(pragma) : there
is no package called ‘pragma’
Error in
library(robCompositions) : there
is no package called
‘robCompositions’
Error in library(jmuOutlier) :
there is no package called
‘jmuOutlier’
Error in
library(customizedTraining) :
there is no package called
‘customizedTraining’
Error in library(DCODE) : there
is no package called ‘DCODE’
Error in
library(VertexSimilarity) :
there is no package called
‘VertexSimilarity’
Error in library(validate) :
there is no package called
‘validate’
Error in
library(splusTimeDate) : there
is no package called
‘splusTimeDate’
Error in library(multivator) :
there is no package called
‘multivator’
Error in library(colorhcplot) :
there is no package called
‘colorhcplot’
Error in library(pocrm) : there
is no package called ‘pocrm’
Error in library(mlxR) : there
is no package called ‘mlxR’
Error in library(SpeciesMix) :
there is no package called
‘SpeciesMix’
Error in library(JacobiEigen) :
there is no package called
‘JacobiEigen’
Error in library(PoweR) : there
is no package called ‘PoweR’
Error in library(aqp) : there is
no package called ‘aqp’
Error in
library(Weighted.Desc.Stat) :
there is no package called
‘Weighted.Desc.Stat’
Error in library(biogas) : there
is no package called ‘biogas’
Error in library(SGP) : there is
no package called ‘SGP’
Error in library(PoisNonNor) :
there is no package called
‘PoisNonNor’
Error in library(readr) : there
is no package called ‘readr’
Error in library(simctest) :
there is no package called
‘simctest’
Error in library(rationalfun) :
there is no package called
‘rationalfun’
Error in library(SEMID) : there
is no package called ‘SEMID’
Error in library(heatex) : there
is no package called ‘heatex’
Error in library(wPerm) : there
is no package called ‘wPerm’
Error in library(rstpm2) : there
is no package called ‘rstpm2’
Error in
library(safeBinaryRegression) :
there is no package called
‘safeBinaryRegression’
Error in library(rich) : there
is no package called ‘rich’
Error in library(gcbd) : there
is no package called ‘gcbd’
Error in library(gvcm.cat) :
there is no package called
‘gvcm.cat’
Error in library(wgaim) : there
is no package called ‘wgaim’
Error in library(YPmodel) :
there is no package called
‘YPmodel’
Error in library(emme2) : there
is no package called ‘emme2’
Error in library(nFactors) :
there is no package called
‘nFactors’
Error in library(RVideoPoker) :
there is no package called
‘RVideoPoker’
Error in library(mgraph) : there
is no package called ‘mgraph’
Error in
library(SemiCompRisks) : there
is no package called
‘SemiCompRisks’
Error in library(HTSCluster) :
there is no package called
‘HTSCluster’
Error in library(kselection) :
there is no package called
‘kselection’
Error in library(Tides) : there
is no package called ‘Tides’
Error in library(selfingTree) :
there is no package called
‘selfingTree’
Error in library(Oncotree) :
there is no package called
‘Oncotree’
Error in library(ECctmc) : there
is no package called ‘ECctmc’
Error in library(SetMethods) :
there is no package called
‘SetMethods’
Error in library(np) : there is
no package called ‘np’
Error in library(GCPM) : there
is no package called ‘GCPM’
Error in library(FField) : there
there is no package called
‘forensim’
Error in library(BlockMessage) :
there is no package called
‘BlockMessage’
Error in library(semdiag) :
there is no package called
‘semdiag’
Error in library(cartography) :
there is no package called
‘cartography’
Error in library(semsfa) : there
is no package called ‘semsfa’
Error in library(tis) : there is
no package called ‘tis’
Error in library(dpglasso) :
there is no package called
‘dpglasso’
Error in library(NPC) : there is
no package called ‘NPC’
Error in library(orclus) : there
is no package called ‘orclus’
Error in library(RESS) : there
is no package called ‘RESS’
Error in library(EpiBayes) :
there is no package called
‘EpiBayes’
Error in library(plot3D) : there
is no package called ‘plot3D’
Error in library(bios2mds) :
there is no package called
‘bios2mds’
Error in library(CpGFilter) :
there is no package called
‘CpGFilter’
Error in library(MiRSEA) : there
is no package called ‘MiRSEA’
Error in library(psData) : there
is no package called ‘psData’
Error in library(BSGW) : there
is no package called ‘BSGW’
Error in library(fAssets) :
there is no package called
‘fAssets’
Error in library(GetTDData) :
there is no package called
‘GetTDData’
Error in library(fgac) : there
is no package called ‘fgac’
Error in library(steadyICA) :
there is no package called
‘steadyICA’
Error in library(gdistance) :
there is no package called
‘gdistance’
Error in library(surveyplanning)
: there is no package called
‘surveyplanning’
Error in library(QualInt) :
there is no package called
‘QualInt’
Error in library(hybridModels) :
there is no package called
‘hybridModels’
Error in library(qPCR.CT) :
there is no package called
‘qPCR.CT’
Error in library(sejmRP) : there
is no package called ‘sejmRP’
Error in library(datapack) :
there is no package called
‘datapack’
Error in
library(batteryreduction) :
there is no package called
‘batteryreduction’
Error in
Error in library(TraMineR) :
there is no package called
‘TraMineR’
Error in library(saeSim) : there
is no package called ‘saeSim’
Error in library(NPsimex) :
there is no package called
‘NPsimex’
Error in library(BEDMatrix) :
there is no package called
‘BEDMatrix’
Error in library(GEVStableGarch)
: there is no package called
‘GEVStableGarch’
Error in library(forensim) :
there is no package called
‘forensim’
Error in library(BlockMessage) :
there is no package called
‘BlockMessage’
Error in library(semdiag) :
there is no package called
‘semdiag’
Error in library(cartography) :
there is no package called
‘cartography’
Error in library(semsfa) : there
is no package called ‘semsfa’
Error in library(tis) : there is
no package called ‘tis’
Error in library(dpglasso) :
there is no package called
‘dpglasso’
Error in library(NPC) : there is
no package called ‘NPC’
Error in library(orclus) : there
is no package called ‘orclus’
Error in library(RESS) : there
is no package called ‘RESS’
Error in library(EpiBayes) :
there is no package called
‘EpiBayes’
Error in library(plot3D) : there
is no package called ‘plot3D’
Error in library(bios2mds) :
there is no package called
‘bios2mds’
Error in library(CpGFilter) :
there is no package called
‘CpGFilter’
Error in library(MiRSEA) : there
is no package called ‘MiRSEA’
Error in library(psData) : there
is no package called ‘psData’
Error in library(BSGW) : there
is no package called ‘BSGW’
Error in library(fAssets) :
there is no package called
‘fAssets’
Error in library(GetTDData) :
there is no package called
‘GetTDData’
Error in library(fgac) : there
is no package called ‘fgac’
Error in library(steadyICA) :
there is no package called
‘steadyICA’
Error in library(gdistance) :
there is no package called
‘gdistance’
Error in library(surveyplanning)
: there is no package called
‘surveyplanning’
Error in library(QualInt) :
there is no package called
‘QualInt’
Error in library(hybridModels) :
Error in library(password) :
there is no package called
‘password’
Error in library(profileModel) :
there is no package called
‘profileModel’
Error in library(qrjoint) :
there is no package called
‘qrjoint’
Error in library(compound.Cox) :
there is no package called
‘compound.Cox’
Error in library(GlobalFit) :
there is no package called
‘GlobalFit’
Error in library(MCI) : there is
no package called ‘MCI’
Error in library(cvAUC) : there
is no package called ‘cvAUC’
Error in library(stima) : there
is no package called ‘stima’
Error in library(hypergea) :
there is no package called
‘hypergea’
Error in library(eqs2lavaan) :
there is no package called
‘eqs2lavaan’
Error in library(Demerelate) :
there is no package called
‘Demerelate’
Error in library(varComp) :
there is no package called
‘varComp’
Error in library(radarchart) :
there is no package called
‘radarchart’
Error in library(ssfa) : there
is no package called ‘ssfa’
Error in library(tgram) : there
is no package called ‘tgram’
Error in
library(snpEnrichment) : there
is no package called
‘snpEnrichment’
Error in library(gWidgets2RGtk2)
: there is no package called
‘gWidgets2RGtk2’
Error in
library(DeducerPlugInScaling) :
there is no package called
‘DeducerPlugInScaling’
Error in library(elmNN) : there
is no package called ‘elmNN’
Error in library(fslr) : there
is no package called ‘fslr’
Error in
library(SemiParSampleSel) :
there is no package called
‘SemiParSampleSel’
Error in library(leiv) : there
is no package called ‘leiv’
Error in library(datacheck) :
there is no package called
‘datacheck’
Error in library(MNM) : there is
no package called ‘MNM’
Error in library(VBmix) : there
is no package called ‘VBmix’
Error in library(FCMapper) :
there is no package called
‘FCMapper’
Error in
library(ParentOffspring) : there
is no package called
‘ParentOffspring’
Error in library(LRcontrast) :
there is no package called
there is no package called
‘ngspatial’
Error in library(wpp2015) :
there is no package called
‘wpp2015’
Error in library(groupRemMap) :
there is no package called
‘groupRemMap’
Error in library(ETAS) : there
is no package called ‘ETAS’
Error in library(bmrm) : there
is no package called ‘bmrm’
Error in library(pegas) : there
is no package called ‘pegas’
Error in library(pragma) : there
is no package called ‘pragma’
Error in
library(robCompositions) : there
is no package called
‘robCompositions’
Error in library(jmuOutlier) :
there is no package called
‘jmuOutlier’
Error in
library(customizedTraining) :
there is no package called
‘customizedTraining’
Error in library(DCODE) : there
is no package called ‘DCODE’
Error in
library(VertexSimilarity) :
there is no package called
‘VertexSimilarity’
Error in library(validate) :
there is no package called
‘validate’
Error in
library(splusTimeDate) : there
is no package called
‘splusTimeDate’
Error in library(multivator) :
there is no package called
‘multivator’
Error in library(colorhcplot) :
there is no package called
‘colorhcplot’
Error in library(pocrm) : there
is no package called ‘pocrm’
Error in library(mlxR) : there
is no package called ‘mlxR’
Error in library(SpeciesMix) :
there is no package called
‘SpeciesMix’
Error in library(JacobiEigen) :
there is no package called
‘JacobiEigen’
Error in library(PoweR) : there
is no package called ‘PoweR’
Error in library(aqp) : there is
no package called ‘aqp’
Error in
library(Weighted.Desc.Stat) :
there is no package called
‘Weighted.Desc.Stat’
Error in library(multisensi) :
there is no package called
‘multisensi’
Error in library(guess) : there
is no package called ‘guess’
Error in library(mateable) :
there is no package called
‘mateable’
Error in library(httk) : there
is no package called ‘httk’
Error in library(wrspathrowData)
: there is no package called
‘wrspathrowData’
is no package called ‘gitter’
Error in library(phangorn) :
there is no package called
‘phangorn’
Error in library(NormPsy) :
there is no package called
‘NormPsy’
Error in library(gRbase) : there
is no package called ‘gRbase’
Error in library(gRapHD) : there
is no package called ‘gRapHD’
Error in library(redcapAPI) :
there is no package called
‘redcapAPI’
Error in library(Quandl) : there
is no package called ‘Quandl’
Error in library(sprinter) :
there is no package called
‘sprinter’
Error in library(cytoDiv) :
there is no package called
‘cytoDiv’
Error in library(rchess) : there
is no package called ‘rchess’
Error in library(BioStatR) :
there is no package called
‘BioStatR’
Error in library(lsbclust) :
there is no package called
‘lsbclust’
Error in library(tmvnsim) :
there is no package called
‘tmvnsim’
Error in
library(Segmentor3IsBack) :
there is no package called
‘Segmentor3IsBack’
Error in library(rrBLUP) : there
is no package called ‘rrBLUP’
Error in library(Sofi) : there
is no package called ‘Sofi’
Error in library(RANKS) : there
is no package called ‘RANKS’
Error in library(entropart) :
there is no package called
‘entropart’
Error in library(ipw) : there is
no package called ‘ipw’
Error in library(netgen) : there
is no package called ‘netgen’
Error in library(orca) : there
is no package called ‘orca’
Error in library(VBLPCM) : there
is no package called ‘VBLPCM’
Error in library(DCluster) :
there is no package called
‘DCluster’
Error in library(dcemriS4) :
there is no package called
‘dcemriS4’
Error in library(Runiversal) :
there is no package called
‘Runiversal’
Error in library(gamlss.data) :
there is no package called
‘gamlss.data’
Error in library(timetree) :
there is no package called
‘timetree’
Error in library(MGLM) : there
is no package called ‘MGLM’
Error in library(geoR) : there
is no package called ‘geoR’
Error in library(jiebaR) : there
is no package called ‘jiebaR’
Error in library(RQuantLib) :
there is no package called

19. needs to the rescue

20. A simple wrapper around library and install.packages
that loads/attaches packages and automatically installs
any that are missing

21. > install.packages("needs")
> library(needs)
Should `needs` load itself when it’s... needed?
(this is recommended)
1: Yes
2: No
Selection: 1
Restarting R session...
> needs(dplyr)
installing packages:
dplyr
> summarize(mtcars, mean(mpg))
mean(mpg)
1 20.09062

24. > needs(dplyr, plyr, .printConflicts = T)
FUNCTION
arrange
count
desc
failwith
filter
id
lag
mutate
rename
summarise
summarize
LOCATION
package:plyr
package:plyr
package:plyr
package:plyr
package:dplyr
package:plyr
package:dplyr
package:plyr
package:plyr
package:plyr
package:plyr

25. > needs(dplyr, plyr)
> prioritize(dplyr)
> needs(.printConflicts = T)
FUNCTION
arrange
count
desc
failwith
filter
id
lag
mutate
rename
summarise
summarize
LOCATION
package:dplyr
package:dplyr
package:dplyr
package:dplyr
package:dplyr
package:dplyr
package:dplyr
package:dplyr
package:dplyr
package:dplyr
package:dplyr

26. > library(dplyr)
Attaching package: ‘dplyr’
The Following objects are masked from ‘package:stats’:
filter, lag
The following objects are masked from ‘package:base’:
intersect, setdiff, setequal, union
> library(plyr)
-----------—--------—-------------—--------—-------------—--------—--
You have loaded plyr after dplyr - this is likely to cause problems.
If you need functions from both plyr and dplyr, please load plyr first,
then dplyr:
library(plyr); library(dplyr)
-----------—--------—-------------—--------—-------------—--------—--
Attaching package: ‘plyr’
The following objects are masked from ‘package:dplyr’:
arrange, count, desc, failwith, id, mutate, rename,
summarise, summarize
>iris %>%
+ group_by(Species) %>%
+ summarize(mean(Sepal.Length))
mean(Sepal.Length)
1 5.84333
>
> needs(dplyr, plyr)
> prioritize(dplyr)
> iris %>%
+ group_by(Species) %>%
+ summarize(mean(Sepal.Length))
Source: local data frame [3 x 2]
Species mean(Sepal.Length)
(fctr) (dbl)
1 setosa 5.006
2 versicolor 5.936
3 virginica 6.588
>

27. THANKS