hey
I'm not sure that I understood the question.
If the matrix is something constant, than you can add it like this
properties (Access = private)
mat = [1,2,3,4,5,6;...
7,8,9,10,11,12;...
13,14,15,16,17,18;...
...] % your matrix goes here
end
if you want it to be a something that you can input, you can add inputs you your app by clicking the "App Input Arguments" botton and then assign the input to the propertie or use it
And when you call the app, you add the input.
my_app(mat_input)
