> Lists? Do you mean vectors? Columns of dataframes are not supposed to be > lists.
Ah. I've been using commands like > x <- list(c(1,2,3),c(2,1),c(6,6,1)) > y <- c("A","B","C") > data.frame(I(x),y) x y 1 1, 2, 3 A 2 2, 1 B 3 6, 6, 1 C This sort of object behaves pretty much as I'd expect it to (using R 1.8.0 for Windows), though I've only made limited use. The x column has mode list but class AsIs. Is this a legitimate use? (The documentation tells me that as.data.frame is a generic method, with many implementations, including one for AsIs; and that the function I will accept any object. I haven't looked into the implementation.) Damon. ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html