> 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,
Danie
a=c(1,1,2);
is.matrix(a) gives FALSE
is.matrix(t(a)) gives TRUE
is.matrix(t(t(a))) gives TRUE
Is this correct? Shouldn't all give FALSE?
I think is.matrix should give FALSE when dimension is 1*n or n*1.
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