as.data.frame(matrixname)$validname chris1 <chris1 <at> psyctc.org> writes:
: : I'm using 1.9.0 on Windoze 2k and I created a numeric matrix and used : colnames() to give it some column names, but if I try to select a : column using matrixname$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 : : ______________________________________________ : R-help <at> stat.math.ethz.ch 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 : : ______________________________________________ [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
