?strptime and ?paste (to combine your 2 date vector pieces) Cheers,
Bert Bert Gunter "The trouble with having an open mind is that people keep coming along and sticking things into it." -- Opus (aka Berkeley Breathed in his "Bloom County" comic strip ) On Tue, Apr 4, 2017 at 6:51 AM, Tunga Kantarcı <tungakanta...@gmail.com> wrote: > I have a data frame. One column (call this column a) contains years, > like 1871, and another column (call this column b) contains months, > like 2. I need to convert these year-month combinations, stored in > these two date vectors, into a single serial date number. E.g. year > 1871 and month 2, stored in different vectors, should return 683429. > Meanwhile, when I check the class type of columns a and b, they are > both integer. > > In MATLAB this can easily be done using the syntax > > output = datenum(a,b,1) > > In R, I have tried the as.POSIXct function but did not succeed. I also > tried the ISOdatetime function but that returned NA for all entries. > It should be a simple operation but I cannot seem to figure it out. > > ______________________________________________ > R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see > 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. ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.
