Hi Michael, I dont think it is possible. Please see first the definition of a dataframe and matrix
----- Original Message ---- From: michael watson (IAH-C) <[EMAIL PROTECTED]> To: r-help@stat.math.ethz.ch Sent: Thursday, May 31, 2007 4:18:11 PM Subject: [R] A matrix with mixed character and numerical columns Is it possible to have one? I have a data.frame with two character columns and 6 numerical columns. I converted to a matrix as I needed to use the col() and row() functions. However, if I convert the data.frame to a matrix, using as.matrix, the numerical columns get converted to characters, and that messes up some of the calculations. Do I really have to split it up into two matrices, one character and the other numerical, just so I can use the col() and row() functions? Are there equivalent functions for data.frames? ______________________________________________ R-help@stat.math.ethz.ch 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. [[alternative HTML version deleted]] ______________________________________________ R-help@stat.math.ethz.ch 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.
