Remove 'Matrix dimensions must agree'

NAOI_tr=NAOI-Trend; matrix dimensions must agree.

[Adam]

What about it? How do you seriously expect any help when you give no information on anything?!

NAOI and Trend clearly have incompatible dimensions. Make them have the same dimensions and the error will be removed. How you do that in your particular case I have no idea.

Use the debugger to find out what size they are.

Answer 1

[Star Strider]

The bsxfun (link) function may be able to help you.