On 7 April 2011 12:09, Dmitry Berman <ravenb...@gmail.com> wrote: > Listers, > > I have a question regarding correlation matrices. It is fairly straight > forward to build a correlation matrix of an entire data frame. I simply use > the command cor(MyDataFrame). However, what I would like to do is construct > a smaller correlation matrix using just three of the variable out of my data > set. > > When I run this: > cor(MyDataFrame$variable1, MyDataFrame$variable2,MyDataFrame$variable3) I > get an error. > > Is there a way to do this through a built in function or is this something I > have to construct manually? >
You can use cbind(). cor(cbind(MyDataFrame$variable1, MyDataFrame$variable2,MyDataFrame$variable3) ) Jeremy ______________________________________________ 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.
