Thread Subject: matrix dimensions must agree.....

Hi!

So, I am just starting to use matlab and I have come across
an error that I do not know how to handle.
Here is the whole picture:
I have 2 cells.
N which is 2222x23
and A which is 2222x1
A and N are made up of 4x4 matrices
I want to compare the two like this:
for i=1:2222
for j=1:23
if N{i,j}-A{i}==0, A{i}=[], end
end
end
HOWEVER, every time it says
error- Matrix dimensions must agree.
But both cells contain 4x4 matrices....so the dimensions do
agree.
I have changed A to a 2222x23 cell filling the rest of the
spaces with [].
But it still came up with the same error.
So i dont know what to do. Or if there is another way that i
can compare the two cells.
thank you for any sort of help in advance!!!

"KA " <kmcdon03@uoguelph.ca> wrote in message <g3oecr$t5u
$1@fred.mathworks.com>...
> So, I am just starting to use matlab and I have come across .....

  If, for any value of i you encounter a j for which N{i,j}==A{i}, then when you
compare N{i,j+1} and A{i} they will be of different sizes since you will have set A
{i} to []. That will give you the error message. You need to break out of the
inner for-loop whenever A{i} is set to [] to avoid this happening.

Roger Stafford

thank you very much!!


"Roger Stafford" <ellieandrogerxyzzy@mindspring.com.invalid>
wrote in message <g3oj9p$qur$1@fred.mathworks.com>...
> "KA " <kmcdon03@uoguelph.ca> wrote in message <g3oecr$t5u
> $1@fred.mathworks.com>...
> > So, I am just starting to use matlab and I have come
across .....
>
> If, for any value of i you encounter a j for which
N{i,j}==A{i}, then when you
> compare N{i,j+1} and A{i} they will be of different sizes
since you will have set A
> {i} to []. That will give you the error message. You
need to break out of the
> inner for-loop whenever A{i} is set to [] to avoid this
happening.
>
> Roger Stafford
>
>