Error in using "width" and "fcn" block in SIMULINK

Hi!

I want to use width of matrix in fcn block for the purpose of creating random matrix, but i got an error message. How can i fix it?

Thx!!

Answer 1

[madhan ravi]

function y = fcn(u)
d = numel(u); % assuming constant blocl is a vector of elements
y = rand(d,9);

[Alex Yande]

I don't know why i always use difficult and long techniques. It seems that very easy with your solving.

Thx a lot !!

:))