MATLAB: Combining two different size variables into one matrix

Question

Hi!

I have two variables of different size. Let's suppose A is the size of 1×5 and B is the size of 1×8. I want to make a matrix where the first row will be A, and the second raw will be B. The matrix should be the size of 2×8 where the last columns of the first row are replaced with NaNs. For example:

A = [1 2 3 4 5]

B = [1 2 3 4 5 6 7 8]

C = [1 2 3 4 5 NaN NaN NaN; 1 2 3 4 5 6 7 8]

How can I do this?

Thanks!

Answer 1

The simplest solution is to download this:

https://www.mathworks.com/matlabcentral/fileexchange/22909-padcat

and then all you need is this:

>> A = [1,2,3,4,5];
>> B = [1,2,3,4,5,6,7,8];
>> C = padcat(A,B)
C =
     1     2     3     4     5   NaN   NaN   NaN
     1     2     3     4     5     6     7     8