Try: A[A[,2] > 15,]
On Wed, May 12, 2010 at 4:14 PM, Clark Johnston <clarks...@clarktx.com>wrote: > > Is there a way to create a new matrix from and existing matrix with > > A > [,1] [,2] > [1,] 1 13 > [2.] 2 18 > [3,] 3 14 > [4,] 4 20 > > if(A[,2] > 15) > > B > [,1] [,2] > [1,] 2 18 > [2,] 4 20 > > > -- > View this message in context: > http://r.789695.n4.nabble.com/manipulating-a-matrix-tp2196610p2196610.html > Sent from the R help mailing list archive at Nabble.com. > > ______________________________________________ > R-help@r-project.org 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. > -- Henrique Dallazuanna Curitiba-Paraná-Brasil 25° 25' 40" S 49° 16' 22" O [[alternative HTML version deleted]]
______________________________________________ R-help@r-project.org 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.