[Rd] is.matrix
Daniel Høyer Iversen
danielho at stud.ntnu.no
Tue Nov 11 20:35:48 CET 2008
> That's confusing! In what situations is x a matrix but does not have
> a dim attribute?
That was my point. I don't find it logical that
is.matrix(a) gives FALSE but
is.matrix(t( t(a) )) gives TRUE.
I also think it would be more logical that
a=c(1,1,2)
dim(a) gives 3 1 instead of NULL,
Daniel
On Tue, Nov 11, 2008 at 8:21 PM, hadley wickham <h.wickham at gmail.com> wrote:
>> | is.matrix| returns |TRUE| if |x| is a matrix and has a |dim <dim.html>|
>> attribute of length 2) and |FALSE| otherwise
>
> That's confusing! In what situations is x a matrix but does not have
> a dim attribute?
>
> Hadley
>
> --
> http://had.co.nz/
>
>
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