Thanks very much. I don't really understand the row() function. I looked in the reference but I don't really get it. It says: Description Returns a matrix of integers indicating their row number in a matrix-like object, or a factor indicating the row labels.
Usage row(x, as.factor = FALSE) Arguments x a matrix-like object, that is one with a two-dimensional dim. I don't understand what row() does. And in the example in the documentation it says: x <- matrix(1:12, 3, 4) # extract the diagonal of a matrix dx <- x[row(x) == col(x)] dx [1] 1 5 9 I thought the single square bracket notation accepts a pair separated by a comma but I don't see how row(x)==col(x) produces that? Thanks again. onyourmark wrote: > > Hi. I have a 925 by 925 correlation matrix corM. I want to identify all > variables that have correlation greater than 0.9. Can anyone suggest an > "R way" of doing this? > > Thank you. > -- View this message in context: http://www.nabble.com/search-through-a-matrix-tp23153538p23155104.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.
