I am not quite clear what you mean by "intersection", but I think
?merge is what you are looking for. Cheers, Bert P.S. Please post in plain text, not HTML (though here it didn't matter). Bert Gunter "Data is not information. Information is not knowledge. And knowledge is certainly not wisdom." -- Clifford Stoll On Wed, Sep 9, 2015 at 12:39 PM, Lida Zeighami <lid.z...@gmail.com> wrote: > Hi there, > > I want to find the intersection between two different data frame or > matrices based on two columns. > for example in matrix A I have 5 columns, the first two columns are Id1 and > Id2 and I have the same columns in the other matrix B, (Id1, Id2 ,,,) > how can I find the intersection between these two matrices based on columns > Id1 and Id2 in R? > > Thanks > > [[alternative HTML version deleted]] > > ______________________________________________ > 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.
