Dear Roger, Something like mat[mat[,1] == mat[,2],] or mat[mat[,1] != mat[,2],] should give you what you want.
I hope that this helps, John On 09 Feb 2004 12:22:48 -0800 Roger Levy <[EMAIL PROTECTED]> wrote: > Hi, > > I have a simple question about matrix/data frame manipulation. I > have > a data frame that looks a something like this > > X Y Z > 1 0 "apples" > -1 -1 "oranges" > ... > 0 -1 "bananas" > > and I'd like to pull out all the rows for which X and Y are (un)equal > into a submatrix. > > How can I do that? > > Many thanks, > > Roger Levy > > ______________________________________________ > [EMAIL PROTECTED] mailing list > https://www.stat.math.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! > http://www.R-project.org/posting-guide.html ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
