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2evs.2000.hunIndex6 2evs.2000.hunIndex6

2evs.2000.hunIndex6 - PDF document

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2evs.2000.hunIndex6 - PPT Presentation

evs2000hunEuropeanValuesSurvey2000Hungary DescriptionAsampleofEuropeanValuesSurvey2000datasetHungaryFormatAdataframewith1000observationsand34variablesDetailsThisisonlyasampledatasetforpackage ID: 162710

evs.2000.hunEuropeanValuesSurvey(2000)-Hungary DescriptionAsampleofEuropeanValuesSurvey(2000)dataset-HungaryFormatAdataframewith1000observationsand34variables.DetailsThisisonlyasampledatasetforpackage

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2evs.2000.hunIndex6 evs.2000.hunEuropeanValuesSurvey(2000)-Hungary DescriptionAsampleofEuropeanValuesSurvey(2000)dataset-HungaryFormatAdataframewith1000observationsand34variables.DetailsThisisonlyasampledatasetforpackageggptandevs.2000.hundoesnotcontainallvariablesfromtheoriginaldatasetavailabletodownloadfromtheEVSmainsite.Thedataismadeofquitealotofvariables,seebelow.Theeldworkwastakenin1999inHungary.ThecasesrepresentstheHungarianpopulation(n=1.000)andaweightvariableisalsogiven.Theincludedvariableswerechoosentobeabletotesttheggpotpackage'sfunctions,andmainlyincludes'multipleresponse'andsome'matrix/arraytype'questions.Theeseareanswerestothefollowingquestions:•howimportantinyourlife:work(Q1A)•howimportantinyourlife:family(Q1B)•howimportantinyourlife:friendsandacquaintances(Q1C)•howimportantinyourlife:leisuretime(Q1D)•howimportantinyourlife:politics(Q1E)•howimportantinyourlife:religion(Q1F)•howoftendiscusspoliticswithfriends(Q2)•takingallthingstogetherhowhappyareyou(Q4)•religiousserviceimportant:birth(Q27A)•religiousserviceimportant:marriage(Q27B)•religiousserviceimportant:death(Q27C)•areyouareligiousperson(Q28)•doyoubelievein:God(Q30A)•doyoubelievein:lifeafterdeath(Q30B)•doyoubelievein:hell(Q30C)•doyoubelievein:heaven(Q30D)•doyoubelievein:sin(Q30E)•doyoubelievein:telepathy(Q30F)•doyoubelievein:reincarnation(Q31) 4savesultra.fastboolean:ifTRUE,ultrafast(...)processingisdonewithoutanychecktoparam-etersorleexistence/permissions.Besureifusingthissettingasnodebuggingisdone!OnlyrecommendedforserversdealingwithlotofRobjects'savesandloadsinamonitoredenvironment.Also,forperformancegain,itisadvisednottoconvertthelisttodataframe(to.data.frame=FALSE).DetailsThepurposeofthisfunctionistobeableonlyafewvariablesofadata.framereallyfast.Itisdonebyreadingandwritingdatasinbinaryformatwithoutanytransformations,andcombiningthespeedofonlyreadingtheneededpartofanarchive.SomeminorexperimentsshowsahugeperformancegainagainstusingSQLite/MySQLbackendsorloadingwholebinarydata,butbeconsciousalwayschoosingtheaprropriatemethodtowriteandreaddata.Theauthorofthispackagewouldliketoemphasize:thispackagecouldbeusefulonlyinfewcases!ValueLoadeddata.frameSeeAlsosavestosaveRobjectstoRDatasbinaryformatExamples##Notrun:#Loadingthe'v1'and'v5'variablesofthedemodataset.data(evs.2000.hun)saves(evs.2000.hun)evs.filtered.listloads("evs.2000.hun.RDatas",c('v1','v5'))evs.filtered.dfloads("evs.2000.hun.RDatas",c('v1','v5'),to.data.frame=TRUE)##End(Notrun) savesSavethevariablesofadata.frameindistinctbinaryles Descriptionsavesdoeswhatthenamesuggests:itsavesdataframe(s)orlist(s)todiskinaspecial,binaryformat.Thisbinaryformatconsistsofdistinctbinarylesofallseparatevariablesofadataframe/listmergedintoanuncompressedtararchive.Thisisdoneviaaloop,whichsaveseachvariable/columntoananexternalrepresentationoftheRobjectsviasaveinatemporarydirectory.Theese'RData'lesarearchivedtoan'RDatas'tararchive,uncompressedforbetterspeed. IndexTopicdataevs.2000.hun,2evs.2000.hun,2loads,3,3save,3saves,3,4,46