Thread Subject: How to determine dimension of output array from Simulink to workspace?

I got some strange results. I have six variables from one
output port in Simulink. Then, I use a Demux to split them
into two groups: [2 4] and save these two as arrays into
the wrokspace. However, when I check the results, the array
with 2 variables has dimension N x 2, where N is the number
of samples, but the array with 4 variables is of 1 x 4 x N.
I do not understand why these two arrays have different
dimension arrangement. I cannot find anyway to specify the
array dimention in row or column direction. Anyone can help
on this?

"Yi Cao" <y.cao@cranfield.ac.uk> wrote in message
<fqlrnf$m71$1@fred.mathworks.com>...
> I got some strange results. I have six variables from
one
> output port in Simulink. Then, I use a Demux to split
them
> into two groups: [2 4] and save these two as arrays into
> the wrokspace. However, when I check the results, the
array
> with 2 variables has dimension N x 2, where N is the
number
> of samples, but the array with 4 variables is of 1 x 4 x
N.
> I do not understand why these two arrays have different
> dimension arrangement. I cannot find anyway to specify
the
> array dimention in row or column direction. Anyone can
help
> on this?

i have seen this also and am not sure why it does that
sometimes. my answer was to put in a reshape block to
take (in my case) the 256x1 array and turn it in to a 256
element vector.