31 Date 20111226 Author TszKin Julian Chan Maintainer TszKin Julian Chan Description Some handy function in R License GPL 2 LazyLoad yes Suggests testthat BugReports TszKin Julian Chan NeedsCompilation no Repository CRAN DatePublication 20140307 082 ID: 75362
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2demeanIndex13 addColAddaconstantcolumntoadata.frameormatrix DescriptionAddaconstantcolumntodata.frameormatrix.UsageaddCol(x,...,value)Argumentsxdata.frameormatrix...constantsvaluevectoravectorofconstantsValueadata.frameormatrixcontainsallcolumnsinxandthoseconstantcolumns.Author(s)TszKinJulianChantsz;&#xkin@;&#xgmai;&#xl.co;&#xm000;Examplesd=data.frame(x=1:5,y=11:15)addCol(d,a=1,b=2,c=3)addCol(d,value=c(a=100,b=200,c=300)) demeanDemeanavectororamatrix(bycolumn) DescriptionDemeanavectororamatrix(bycolumn)Usagedemean(x)ArgumentsxVectorormatrix 4JBTest generateSignificanceGeneratet-statistics,p-valueandsignicance DescriptionGeneratet-statistics,p-valueandsignicancefromestimatesanditssd.EstimatesanditsSDistherstandsecondcolumnrespectivelyUsagegenerateSignificance(x,row_names)ArgumentsxAmatrixordata.framerow_namesnamesofrowValueadata.frameAuthor(s)TszKinJulianChantsz;&#xkin@;&#xgmai;&#xl.co;&#xm000;Examplesnx_data(()())x_estimates(()()())generateSignificance(x_estimates)generateSignificance(x_estimates,row_names=c("mean0","mean1")) JBTestpValueofJarqueBeratest DescriptionReturnthepValueofJarqueBeratest.TheJarqueBeratesttestthenullhypothesisthatthedataarefromanormaldistribution.UsageJBTest(x) label_both_parsed_recode5ArgumentsxdataValuepValueofJarqueBeratestAuthor(s)TszKinJulianChantsz;&#xkin@;&#xgmai;&#xl.co;&#xm000;ExamplesJBTest(rnorm(50))JBTest(rt(50,3))n=100#sizemean(replicate(n,JBTest(rnorm(100))))#powermean(replicate(n,JBTest(rt(100,3)))) label_both_parsed_recodeCombinelabel_bothandlabel_parsedinggplot2. DescriptionCombinelabel_bothandlabel_parsedinggplot2.Alsoaddedarenamefunctiontoitseelabel_bothandlabel_parsedinggplot2fordetails.Usagelabel_both_parsed_recode(display_name)Argumentsdisplay_nameAvectorcontainsthedisplayname.Namesofthevectoraretheoriginalname.ValueAfunctionsimilartolabel_bothandlabel_parsedinggplot2fordetails.Author(s)TszKinJulianChantsz;&#xkin@;&#xgmai;&#xl.co;&#xm000; packages7 packagesloadpackageswithauto-installation Descriptionloadadd-onpackages.Ifthepackagescannotbefound,install.packagesiscalled.Usagepackages(x,...)Argumentsxnameofthepackages...argumentstoinstall.packagesAuthor(s)TszKinJulianChantsz;&#xkin@;&#xgmai;&#xl.co;&#xm000;SeeAlsorequireinstall.packagesExamples##Notrun:packages("foreach")##End(Notrun) recodeRecodethevalueofavector DescriptionRecodethevalueofavectorormatrix.Usagerecode(x,from,to)Argumentsxavectorormatrixfromoriginalvalueofxtonewvalueofx repRow9 repRowRepeatavectorbyrow DescriptionRepeatavectorbyrowUsagerepRow(x,n)ArgumentsxvectorormatrixnnumberofreplicationAuthor(s)TszKinJulianChantsz;&#xkin@;&#xgmai;&#xl.co;&#xm000;SeeAlsorepColExamplesrepRow(c(a=1,b=2,c=3),5)repCol(c(a=1,b=2,c=3),5) shiftshiftavectorbyshift_byunit DescriptionRepeatavectorbyrowUsageshift(x,shift_by)Argumentsxavectorshift_bynumberofshift splitBy11 splitBySplitavectorbyasequenceoflength DescriptionSplitavectorbyasequenceoflengthThisfunctionwillsplitthevectorxintolength(x)subvector.Thelengthofeachsubvectorisgivenbyby.UsagesplitBy(x,by)ArgumentsxAvectortobesplittedbyAvectoroflengthValuealistofsubvectorAuthor(s)TszKinJulianChantsz;&#xkin@;&#xgmai;&#xl.co;&#xm000;ExamplessplitBy((1:10)*10,c(2,2))splitBy((1:10)*10,c(2,3,4))##Notrun:expect_equivalent(splitBy((1:10)*10,c(2,2)),list(c(10,20),c(30,40)))expect_equivalent(splitBy((1:10)*10,c(2,3,4)),list(c(10,20),c(30,40,50),c(60,70,80,90)))##End(Notrun) ticStartStopclocktomeasureperformance DescriptionStart/clocktomeasureperformance.SameasticandtocinmatlabUsagetic(name=".time_Jmisc",envir=.GlobalEnv)toc() 12%+%ArgumentsnameNameofthetemporarytimevariableenvirenvironmentofthetemporarytimevariableAuthor(s)TszKinJulianChantsz;&#xkin@;&#xgmai;&#xl.co;&#xm000;Examples##Notrun:tic()Sys.sleep(1)toc##End(Notrun) %+%Concatenatetwostrings DescriptionPastetwostringstogetherwithoutseparation.Usages1%+%s2Argumentss1FirstStrings2SecondStringValuepaste(s1,s2,sep="")Author(s)TszKinJulianChantsz;&#xkin@;&#xgmai;&#xl.co;&#xm000;Examplescat("Hello"%+%"World")