naming rows and columns in a matrix

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?rownames
?colnames
x <- matrix(nrow=7, ncol=3)
rownames(x) <- paste('name', 1:7)
rownames(x)
[1] "name 1" "name 2" "name 3" "name 4" "name 5" "name 6" "name 7"

Hello,

I have a 3 x 7 matrix.  I want to assign a name to each row
and each column.  I tried using
dimnames, but for some reason I cannot retrieve the names of the rows or the names
of the columns.  Is there another way to name the rows and columns and refer to them?

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Jim Holtman
Cincinnati, OH
+1 513 646 9390

What is the problem that you are trying to solve?
Please read the last line to every message to r-help.  There is no
code in your post so we have no idea what you did wrong.
x <- matrix(1:12, 3, 4, dimnames = list(letters[1:3], LETTERS[1:4]))
x
A B C  D
a 1 4 7 10
b 2 5 8 11
c 3 6 9 12
rownames(x)
[1] "a" "b" "c"
colnames(x)
[1] "A" "B" "C" "D"
dimnames(x)
[[1]]
[1] "a" "b" "c"

[[2]]
[1] "A" "B" "C" "D"
Hello,

I have a 3 x 7 matrix.  I want to assign a name to each row
and each column.  I tried using
dimnames, but for some reason I cannot retrieve the names of the rows or the names
of the columns.  Is there another way to name the rows and columns and refer to them?

       [[alternative HTML version deleted]]

______________________________________________
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.