On Mon, Mar 12, 2012 at 11:42 AM, huang jialin <huangps...@gmail.com> wrote: > Hello, > > I have a vector {a, b1, b2, b3, b4}.
What does this mean? Is this a character vector giving names of objects that exist elsewhere in the workspace? Else, how do you tell a/b1/b2 apart in a vector? You probably want ?cov but applying it is going to depend on the shape of your data. Michael > How can I calculate the following > matrix: > > var(a) cov(a, b1) cov(a, b2) cov(a, b3) cov(a, b4) > cov(a, b1) var(b1) cov(a, b2) cov(a, b3) cov(a, b4) > ... > ... > cov(a, b1) cov(a, b2) cov(a, b3) cov(a, b4) var(b4) > > I would very appreciate your inputs. Thank you very much. > > Sincerely, > Jialin Huang > > [[alternative HTML version deleted]] Plain text please. > > ______________________________________________ > 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. ______________________________________________ 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.