Different size matrix data addition

I have different matrix size for different data file. say one data is 846x399 and another is 4208x399. I need to add all the files. how to do it?

Answer 1

[DEEPAK SHARMA]

Define your Matrix A(846x399) , B(4208x399)

Define C = zeros(1,399);

A = [A;repmat(C,3362,1)];

new Matrix A will be 4208x399

now you can add A and B

[Walter Roberson]

Might as well just do

A(size(B,1), end) = 0;