Hello, > > I'm trying to build a lower triangular matrix (with zeros in the diagonal) > from a particular dataframe. >
This example constructs a lower triangular matrix from a vector, not a data.frame. (In your example, you also use a vector, the last column of the DF.) x <- runif(15) y <- matrix(0, nrow=6, ncol=6) y[lower.tri(y)] <- x # See the result y Hope this helps, Rui Barradas -- View this message in context: http://r.789695.n4.nabble.com/built-a-lower-triangular-matrix-from-dataframe-tp4390813p4391162.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.
