How to access data of an iddata object in a cell array?

Dear Matlab community!

I have a cell array where I store iddata objects with input signals and output signals. How can I inquire the input variable of the iddata object inside the cell array?

Best regards

Benjamin

Answer 1

[Star Strider]

The iddata object is a structure, so in this instance, use cell array indexing and structure referencing to get its contents —

Fs = 500;
L = 50;
t = linspace(0, L-1, L).'/Fs;
u = [0 ones(1,L-1)].';
sys = tf([1 0], [1 0 1], 1/Fs);
y = lsim(sys, u, t);

% figure
% plot(t, y)
% hold on
% plot(t, u)
% hold off
% grid

k = 1;
data{k} = iddata(y, u, 1/Fs)

data = 1×1 cell array
    {50×1×1 iddata}

Input = data{k}.InputData                               % Return Input Data From Cell Array Of 'iddata' Objects

Input = 50×1

0 1 1 1 1 1 1 1 1 1

I created data to test this, since none were provided.

.

[Benjamin Pommer]

Thank you

[Star Strider]

As always, my pleasure!