text_combined: lazarus mramba lmrambakilifikemriwellcomeorg dear prof brian true used epicalc package functions use des epicalc problem occur use libraryforeign tmp readdtamaltreatdta convertdatesfalse sessioninfo r version 271 20080623 i386pcmingw32 locale lc_collateenglish_united states1252lc_ctypeenglish_united states1252lc_monetaryenglish_united states1252lc_numericclc_timeenglish_united states1252 attached base packages 1 splines stats graphics grdevices utils datasets methods 8 base attached packages 1 epicalc_2712 survival_2341 foreign_0826 libraryforeign tmp readdtamaltreatdta convertdatesfalse strtmp dataframe 670 obs 43 variables thanks able read dataset however epicalc function use call data libraryepicalc usemaltreatdta error fromcharx character string standard unambiguous format usemalvacdta error fromcharx character string standard unambiguous format attached two datasets herein kind regards lazarus mramba junior statistician po box 986 80108 kilifi kenya mobile 254721292370 tel 254 41 522063 tel 254 41 522390 office extension 419 prof brian ripley 0806 1238 pm use des please note footer message using package epicalc without telling us suspect foreignreaddta used argument convertdates could try setting false message asdatecharacter complaining date format likely difference version foreign version r posting guide asked output sessioninfo would told us versions short try libraryforeign tmp readdtamaltreatdta convertdatesfalse strtmp tmpdob tmptodaydate latter two numbers try converting eg asdatetmpdob origin19600101 would help make dataset available developers investigate wed 6 aug 2008 lazarus mramba wrote dear installed r 270 tried call dataset ealier called r262 keep getting error usemaltreatdta error fromcharx character string standard unambiguous format tried r271 get error however call r 262 error usemaltreatdta des observations 670 variable class description 1 scrno integer 2 todaydate date 3 ethnic character 4 othtribe character 5 dob date 6 ageyrs integer 7 agemths integer 8 sex character figure problem please help kind regards lazarus mramba junior statistician po box 986 80108 kilifi kenya mobile 254721292370 tel 254 41 522063 tel 254 41 522390 office extension 419 ______________________________________________ rhelprprojectorg mailing list httpsstatethzchmailmanlistinforhelp please read posting guide httpwwwrprojectorgpostingguidehtml provide commented minimal selfcontained reproducible code brian ripley ripleystatsoxacuk professor applied statistics httpwwwstatsoxacukripley university oxford tel 44 1865 272861 self 1 south parks road 44 1865 272866 pa oxford ox1 3tg uk fax 44 1865 272595 wed 06 aug 2008 130621 0300 r help running stata dataset r