[R] date conversation

Hello, when I convert a factor like this a=01.10.2009 into a date using b=strptime(a, format=%d. %m. %Y). It works very well. But when I try to convert c = 2009/10 into a date using d=strptime(c, format=%Y/%m) it doesnt work at all. I get d=NA. What did I do wrong? Thank you very much for your

Re: [R] date conversation

You have to supply a 'day' or the date is not known: c = '2009/10' d=strptime(paste0(c, '/1'), format=%Y/%m/%d) d [1] 2009-10-01 On Mon, Jul 23, 2012 at 9:05 AM, paladini palad...@beuth-hochschule.de wrote: Hello, when I convert a factor like this a=01.10.2009 into a date using

Re: [R] date conversation

HI, You can try, library(zoo) c2-2009/10  as.Date(as.yearmon(c2,%Y/%m)) [1] 2009-10-01 str(c3)  Date[1:1], format: 2009-10-01 A.K. - Original Message - From: paladini palad...@beuth-hochschule.de To: r-help@r-project.org Cc: Sent: Monday, July 23, 2012 9:05 AM Subject: [R] date