I'm using 1.9.0 on Windoze 2k and I created a numeric matrix and used colnames() to give it some column names, but if I try to select a column using matrixname$validname I get a null return but if I use matrixname[,4] it works fine. Looking at the help I think this is because a matrix is not a recursive structure and I think it's saying I shouldn't be surprised nor attempt this.
I'm in the process of transferring all my stats work to R having used a mixture of SPSS, S and SAS (and snippets of other things) over the years so sorry if I'm being dumb but this surprised me and I'd love a kindly explanation as I thought indexing a matrix in this way was something I did regularly (I think the last time was actually using it on a dataframe though) and I also think it would be useful and produce more readable code if I could. Can some kindly soul explain? TIA, Chris ______________________________________________ [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
