col(matrix(0, 5, 5), as.factor=TRUE) fails > col(matrix(0, 5, 5), as.factor=TRUE) Error in factor(.Internal(col(dim(x))), labels = colnames(x)) : invalid labels; length 0 should be 1 or 5
when the matrix has no dimnames. This is not as advertised. I would have expected the equivalent of factor(.Internal(col(dim(x))), labels=colnames(x, do.NULL=FALSE, prefix="")) > sessionInfo() R version 2.8.0 Under development (unstable) (2008-05-13 r45682) x86_64-unknown-linux-gnu Martin -- Martin Morgan Computational Biology / Fred Hutchinson Cancer Research Center 1100 Fairview Ave. N. PO Box 19024 Seattle, WA 98109 Location: Arnold Building M2 B169 Phone: (206) 667-2793 ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel