error setting gram()

I'm trying to use gram() over a finite time interval. I have this simple function:

function q = MatrizW_V2(A,B,t)

sys = ss(A,B,[1 0;0 1],[0 0;0 0]);

opt = gramOptions('TimeInterval',[0 t]);

Wc = gram(sys,'c',opt);

q = Wc;

end

My inputs are the attached matrix A1, B1, ant t around 1e-9 to 1e-8.

I'm getting the error:

The "TimeIntervals" option of the "gram" command must be set to a two-column matrix where each row is

valid interval.

But I think it is set in the wrigth way, isn't?

[Jon]

Please provide an example script that calls this function that reproduces the error

Answer 1

[Jon]

It is most likely that the value for t that you are passing to this function is not a scalar. It must be a scalar for [0 t] to be a two column matrix.