> On Jul 20, 2016, at 1:31 PM, lily li <chocol...@gmail.com> wrote: > > Hi R users, > > I have a dataframe, where there is a column 'time' represents time series > but is not complete. How to expand the dataframe so this column will become > complete, where other columns with the newly added rows have NA values? > Thanks. > > df > A B C time > 10 5 3.3 1990-01-01 > 11 5 4 1990-02-07 > 12 4 3 1990-02-14 > ...
Make a dataframe with a 'time' column using seq.Date and merge that dataframe with your df dataframe. > > [[alternative HTML version deleted]] Really .... isn't it time you learned how to send plain text. You've posted many questions on Rhelp. It's really not that difficult on gmail. I also have a gmail account and have had no difficulty finding instructions on how to do it. > > ______________________________________________ > 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. David Winsemius Alameda, CA, USA ______________________________________________ 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.