Hi Rookie,
Sure, just use the dimnames argument. You pass it a list where the
first element contains the row names and the second element contains
the column names. Supposing you only want to name one dimension, just
use NULL for the other (see ?matrix for full details).
Using your data:
x <- matrix(c(15, 7, 20, 12, 25, 14, 30, 19, 35, 7, 15, 7, 20, 17, 25,
19, 30, 25, 35, 10, 15, 15, 20, 12, 25, 19, 30, 22, 35, 11, 15, 11,
20, 18, 25, 18, 30, 19, 35, 15, 15, 9, 20, 18, 25, 18, 30, 23, 35,
11), nrow=25, byrow=TRUE, dimnames = list(NULL, c("Cotton",
"Observations")))
Cheers,
Josh
On Tue, Aug 17, 2010 at 3:24 PM, Rookie <rookie8...@gmail.com> wrote:
> Is there a way that I can specify the column names in the matrix function?
> Currently, below is the way I am doing it.
>
> x <- matrix(c(15, 7, 20, 12, 25, 14, 30, 19, 35, 7, 15, 7, 20, 17, 25, 19,
> 30, 25, 35, 10, 15, 15, 20, 12, 25, 19, 30, 22, 35, 11, 15, 11, 20, 18, 25,
> 18, 30, 19, 35, 15, 15, 9, 20, 18, 25, 18, 30, 23, 35, 11), nrow=25,
> byrow=TRUE)
> colnames(x) <- c("Cotton", "Observations")
> x
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> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>
--
Joshua Wiley
Ph.D. Student, Health Psychology
University of California, Los Angeles
http://www.joshuawiley.com/
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