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Title stata

com clear Clear memory Syntax Description Remarks and examples Also see Syntax clear clear mata results matrix programs ado clear all Description clear by itself removes data and value labels from memory an

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Title stata






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2clear—Clearmemory clearallandclear*aresynonyms.Theyremovealldata,valuelabels,matrices,scalars,constraints,clusters,storedresults,sersets,andMatafunctionsandobjectsfrommemory.Theyalsocloseallopenlesandpostles,cleartheclasssystem,closeanyopenGraphwindowsanddialogboxes,dropallprogramsfrommemory,andresetalltimerstozero.Theyareequivalenttotyping.version13.drop_all(see[D]drop).labeldrop_all(see[D]label).matrixdrop_all(see[P]matrixutility).scalardrop_all(see[P]scalar).constraintdrop_all(see[R]constraint).clusterdrop_all(see[MV]clusterutility).fileclose_all(see[P]le).postutilclear(see[P]postle)._returndrop_all(see[P]_return).discard(see[P]discard).programdrop_all(see[P]program).timerclear(see[P]timer).mata:mataclear(see[M-3]mataclear)Remarksandexamplesstata.comYoucancleartheentiredatasetwithoutaffectingmacrosandprogramsbytypingclear.Youcanalsotypeclearall.Thiscommandhasthesameresultasclearbyitselfbutalsoclearsmatrices,scalars,constraints,clusters,storedresults,sersets,Mata,theclasssystem,businesscalendars,andprograms;closesallopenlesandpostles;closesallopenGraphwindowsanddialogboxes;andresetsalltimerstozero. Example1Weloadthebpwidedatasettocorrectamistakeinthedata..usehttp://www.stata-press.com/data/r13/bpwide(fictionalbloodpressuredata).listin1/5 patientsexagegrpbp_bef~ebp_after 1. 1Male30-45143153 2. 2Male30-45163170 3. 3Male30-45153168 4. 4Male30-45153142 5. 5Male30-45146141 .replacebp_after=145in3(1realchangemade)Wemadeanothermistake.Wemeanttochangethevalueofbp afterinobservation4.Itiseasiesttobeginagain..clear.usehttp://www.stata-press.com/data/r13/bpwide(fictionalbloodpressuredata)