Question

I’m trying to write a Matlab code that, given a matrix, outputs 3 matrices (according to some rules). I’m having difficulty getting this to work though – I can’t output a vector with matrices as entries. I get the error message:

??? In an assignment A(I) = B, the number of elements in B and I
must be the same.

How can I go about doing this?

Answer 1

You could write

function [A B C] = myFunction(X)
    A = X;
    B = 2 * X;
    C = 3 * X;
end

and call it with

[a b c] = myFunction(ones(2))

If you won’t want all of the outputs, just call it with

a = myFunction(ones(2))

or

[a b] = myFunction(ones(2))

to get just the first argument, or just the first two arguments.