?merge On Tue, Jul 14, 2009 at 9:07 PM, Christopher Desjardins<[email protected]> wrote: > Hi, > > I am trying to combine two data frames by ID. The first data frame is the > whole data set and the second data frame is a subset of the first. What I > would like to do is take the values from variable, p1, from the second data > frame and merge them back into that variable in the first data frame. I have > ID variables that match for both data frames and the data frames obviously > have differing number of rows where the first data frame > second data > frame. I want to keep the pre existing data for this variable that is > present in the first data frame and only write over the data that I edited > in the second. > > Thanks and please cc me as I am a digest subscriber, > Chris > > ______________________________________________ > [email protected] 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. >
-- Jim Holtman Cincinnati, OH +1 513 646 9390 What is the problem that you are trying to solve? ______________________________________________ [email protected] 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.
