Question about expand.grid function in R

I don't think you can do it within expand.grid() but something like
this might work:

rownames(x) <- apply(x, 1, paste, collapse = "")

Michael
Hi,

I am extremely new to R, and was wondering if someone would be able to help me with a question regarding the expand.grid function. When I input

expand.grid.rep <- function(x, n=1) do.call(expand.grid, rep(list(x),n))
expand.grid.rep(c("a", "b", "c"), 3)

my output is as follows,

Var1 Var2 Var3
1 ? ? a ? ?a ? ?a
2 ? ? b ? ?a ? ?a
3 ? ? c ? ?a ? ?a
4 ? ? a ? ?b ? ?a
5 ? ? b ? ?b ? ?a
6 ? ? c ? ?b ? ?a
7 ? ? a ? ?c ? ?a
8 ? ? b ? ?c ? ?a
9 ? ? c ? ?c ? ?a
10 ? ?a ? ?a ? ?b
11 ? ?b ? ?a ? ?b
12 ? ?c ? ?a ? ?b
13 ? ?a ? ?b ? ?b
14 ? ?b ? ?b ? ?b
15 ? ?c ? ?b ? ?b
16 ? ?a ? ?c ? ?b
17 ? ?b ? ?c ? ?b
18 ? ?c ? ?c ? ?b
19 ? ?a ? ?a ? ?c
20 ? ?b ? ?a ? ?c
21 ? ?c ? ?a ? ?c
22 ? ?a ? ?b ? ?c
23 ? ?b ? ?b ? ?c
24 ? ?c ? ?b ? ?c
25 ? ?a ? ?c ? ?c
26 ? ?b ? ?c ? ?c
27 ? ?c ? ?c ? ?c

I was wondering if there was anyway I can change the row numbers to labels that indicate what is in each row. Instead of a 1, I'd like to have a label saying "aaa", etc. I'm not sure if this is even possible within the expand.grid function but any help would be appreciated. Thanks.
? ? ? ?[[alternative HTML version deleted]]

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Question about expand.grid function in R

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