I think that what you are looking for is:
all.equal(tm,tmm,check.attributes=FALSE)
But BEWARE:
m <- matrix(1:36,4,9)
mm <- matrix(1:36,12,3)
all.equal(m,mm,check.attributes=FALSE)
gives TRUE!!! I.e. sometimes attributes really are vital characteristics.
cheers,
Rolf Turner
On 16/11/12 08:52, Jonathan Dushoff wrote:
I have two matrices, generated by R functions that I don't understand.
I want to confirm that they're the same, but I know that they have
different attributes.
If I want to compare the dimnames, I can say
identical(attr(tm, "dimnames"), attr(tmm, "dimnames"))
[1] FALSE
or even:
identical(dimnames(tm), dimnames(tmm))
[1] FALSE
But I can't find any good way to compare the "main" part of objects.
What I'm doing now is:
tm_new <- tm
tmm_new <- tmm
attributes(tm_new) <- attributes(tmm_new) <- NULL
identical(tm_new, tmm_new)
[1] TRUE
But that seems very inaesthetic, besides requiring that I create two
pointless objects.
I have read ?attributes, ?attr and some web introductions to how R
objects work, but have not found an answer.
Thanks for any help.
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