MATLAB: Undefined function ‘times’ for input arguments of type ‘cell’

Question

I'm performing the lme model with longitudinal data analyzed using free surfer, I have created this matrix:

X = [ones(length(M),1) M M(:,1).*M(:,2)];

but I have the following error

Undefined function 'times' for input arguments of type 'cell'.

What is it wrong? enrica

Answer 1

When you want to access the contents of "M", you need to access it like this:

 M{:,1}