On Tue, 7 Oct 2014 10:32:42 AM Frederic Ntirenganya wrote: > Dear All, > > How can I change the format of date of day of the year ? for example r > (i.e. "17 Apr" rather than "108"). > > The following is the type of the dataset I have > > head(Samaru) > Year Start End Length > 1 1930 108 288 180 > 2 1931 118 288 170 > 3 1932 115 295 180 > 4 1933 156 294 138 > 5 1934 116 291 175 > 6 1935 134 288 154 > Hi Frederic, The easiest method I can think of is this:
Samaru$Start<-format(as.Date( paste(Samaru$Year,"01-01",sep="-"))+Samaru$Start, "%b %d") Samaru$End<-format(as.Date( paste(Samaru$Year,"01-01",sep="-"))+Samaru$End, "%b %d") Samaru Year Start End Length 1 1930 Apr 19 Oct 16 180 2 1931 Apr 29 Oct 16 170 3 1932 Apr 25 Oct 22 180 4 1933 Jun 06 Oct 22 138 5 1934 Apr 27 Oct 19 175 6 1935 May 15 Oct 16 154 Jim ______________________________________________ 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.
