App.designer to plot step response

In Appdesigner, I create a app.UIAxes and a app.Button, how to write a callback to use this app.UIAxes to plot a step response using the command 'step(tf)' when I push down this Button.

1 个评论

R = app.Resistencia.Value;
C=app.Condensador.Value;
H=tf([0 1],[1 1/(R*C)])
step(app.UIAxes,H)

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回答(1 个)

You can extract the output of the step function and use the "plot" function in App Designer. Here is an example callback function for the Button :
% Button pushed function: PlotButton
function PlotButtonPushed(app, event)
tf = 1:3:100;
a = [-0.5572,-0.7814;0.7814,0];
b = [1,-1;0,2];
c = [1.9691,6.4493];
sys = ss(a,b,c,0);
[y,t] = step(sys);
plot(app.UIAxes,y(:,:,1));
end
This link has guidelines on how to write a callback function for a Button to plot on UIAxes.
You could execute the "step" function in MATLAB to figure out how to extract relevant data from the output of the "step" function for plotting.

4 个评论

Thanks for your answer. But I want to use step to get the figure directly, not just use it to get some vector and then use plot to get the figure.
@jiarui zhang: Did you find a solution for this? I have a same problem with you, please share if you have solution. Thank you.
same problem and no answer :(

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