MATLAB: About accessing the time inside embedded

Question

I am using clock block to access the current simulation time. This block is connected to matlab embedded function inside the Simulink. This time is available inside embedded function for use. I am giving first 15 samples.

0 1.17773E-09 7.06641E-09 3.65098E-08 1.83727E-07 9.1981E-07 4.60023E-06 2.30023E-05 0.000115013 0.000575065 0.002875328 0.014376639 0.034210553 0.060090116 0.091367769

But my problem is I want use "index" of the simulation time also. How can I do so ? Waiting for your reply…Thank you

Answer 1

What do you mean by the "index" - the step count? In that case you could have a counter running inside the MATLAB Function block. Define the counter as a PERSISTENT variable so that it holds its value from previous step.

For example something like this:

function val = myFunction(x)
persistent counter
if isempty(counter)
    counter = 0;
else
    counter = counter + 1;
end
val = counter*x;