I have trouble with this: as.Date("Sep-1981", format="%b-%Y") Returns "NA">From documentation for strftime'%b' Abbreviated month name in the current locale. (Also matches full name on input.) '%Y' Year with century. What am I doing wrong? cheers Worik [[alternative HTML version deleted]]
Worik, You need a day! as in: as.Date("1-Sep-1981", format="%d-%b-%Y") ## first of the month HTH, Jim Porzak Ancestry.com San Francisco, CA www.linkedin.com/in/jimporzak use R! Group SF: www.meetup.com/R-Users/ On Thu, Sep 24, 2009 at 4:15 PM, Worik R <worikr@gmail.com> wrote:> I have trouble with this: > > as.Date("Sep-1981", format="%b-%Y") > > Returns "NA" > > >From documentation for strftime > > '%b' Abbreviated month name in the current locale. (Also matches > full name on input.) > > '%Y' Year with century. > > What am I doing wrong? > > cheers > Worik > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide > http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. >[[alternative HTML version deleted]]
Try this:> library(zoo) > as.yearmon("Sep-1981", "%b-%Y")[1] "Sep 1981"> as.Date(as.yearmon("Sep-1981", "%b-%Y"))[1] "1981-09-01"> as.Date(paste(1, "Sep-1981"), "%d %b-%Y")[1] "1981-09-01" On Thu, Sep 24, 2009 at 7:15 PM, Worik R <worikr at gmail.com> wrote:> I have trouble with this: > > as.Date("Sep-1981", format="%b-%Y") > > Returns "NA" > > >From documentation for strftime > > ?'%b' Abbreviated month name in the current locale. (Also matches > ? ? ? ? ?full name on input.) > > ? '%Y' Year with century. > > What am I doing wrong? > > cheers > Worik > > ? ? ? ?[[alternative HTML version deleted]] > > ______________________________________________ > R-help at r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. >