function - access column
Perhaps something like this:
Test <- function(m){
m <- if(is.character(m)) get(m) else m
stopifnot(length(colnames(m))>0)
n = colnames(m)
# Process n however
2* m[, n]
}
That make sense?
Hope it helps,
Michael
On Oct 7, 2011, at 11:03 AM, Ana <rrasterr at gmail.com> wrote:
How can I call matrix$col, inside a function?
The matrix name is one of the variables of the function, while the
column name I get by assuming that it should have a certain
characters.
something like this
function(matrix){
colname=as.name(grep("[A-T a-t]ting",colnames(matrix),value=TRUE))
output=2*(matrix$colname)
return(output)
}
The name of the column is Testing.
______________________________________________ R-help at r-project.org 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.