Hello, Please check function which().
> > m <- matrix(1:12,3,4) > which(m==5, arr.ind=T) row col [1,] 2 2> which(m==9, arr.ind=T) row col [1,] 3 3 > Regards, Carlos Ortega www.qualityexcellence.es 2012/1/27 chuck.01 <charliethebrow...@gmail.com> > Please use dput() to post your example matrix. > > > > > Rambler1 wrote > > > > I have run into a problem in my code. What I want to accomplish is this: > > I have a user input stock symbols into a list and from there I run the > > quantmod package to get historical data. I compute the correlation matrix > > and then turn that matrix into a simple matrix with 1's or 0's depending > > on how strong the correlation is. From here I would like to go into the > > matrix and take all the 1's and match them with their row/column titles. > > So for each 1 I have two stock symblos. For example: > > MMM ACE ABT ANF HD PEP K GOOG BIDU JNJ > > MMM 0 1 0 0 0 1 0 0 0 > > 0 > > ACE 1 0 0 0 0 0 0 0 > > 0 1 > > ABT 0 0 0 0 0 1 0 0 > > 0 1 > > ANF 0 0 0 0 0 0 0 0 > > 0 0 > > HD 0 0 0 0 0 0 0 0 > > 0 0 > > PEP 1 0 1 0 0 0 0 0 > > 0 1 > > K 0 0 0 0 0 0 0 0 > > 0 0 > > GOOG 0 0 0 0 0 0 0 0 0 > > 0 > > BIDU 0 0 0 0 0 0 0 0 > > 0 0 > > JNJ 0 1 1 0 0 1 0 0 > > 0 0 > > > > Say I have this matrix computed. I would like to locate every 1 and the > > corresponding two names that go with it. (eg MMM/ACE, MMM/PEP and so on.) > > Thank you for your help! > > > > > -- > View this message in context: > http://r.789695.n4.nabble.com/Grabbing-Column-and-Row-titles-tp4332136p4333698.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. > [[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.
