Plotting in Matlab appdesigner

19 vues (au cours des 30 derniers jours)
Claudee Khiarra Directo
Claudee Khiarra Directo le 14 Fév 2021
Commenté : Mario Malic le 5 Nov 2022
I'm trying to create a random signal generator with stem plot in Matlab App Designer, and when I click the 'Generate' Button - nothing happens. Below is the code I added in the generated code from the app designer.
methods (Access = private)
%generate button is pushed
function GenerateButtonPushed(app, event)
amplitude = app.AmplitudeEditField.Value;
samples = app.SamplesEditField.Value;
n_range1 = app.nRange1EditField.Value;
n_range2 = app.nRange2EditField.Value;
n_range = n_range1:n_range2;
xn = amplitude .* sin(2*pi*randn(1,samples));
%plot random signal
stem(n_range,xn, 'parent', app.UIAxes)
end
end
When I ran this block of code in a live script in Matlab. It worked, but the graph won't show when I run it with the GUI.

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Mario Malic
Mario Malic le 14 Fév 2021
Modifié(e) : Mario Malic le 14 Fév 2021
Hello,
Try this
stem(app.UIAxes, n_range,xn);
Edit: Both of these functions work, actually, the error is in writing a callback manually without assigning it to the component. In App Designer, click the right mouse button on the button component and go to callbacks and add one. Then you paste the body of your code in it.
  9 commentaires
Ignacio Roa
Ignacio Roa le 5 Nov 2022
hello,
I need some help, im tying to plot a pwm signal with a slider to control de dutycicle but i dont want to have to press a botom every time i change the duty. I have no idea how to do it.
Mario Malic
Mario Malic le 5 Nov 2022
Do some tutorials first and then post a question when you get stuck.

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Plus de réponses (1)

randerss simil
randerss simil le 14 Fév 2021
Modifié(e) : randerss simil le 14 Fév 2021
%if true
function GenerateButtonPushed(app,eventData)
It's eventdata instead of event
  2 commentaires
randerss simil
randerss simil le 14 Fév 2021
Modifié(e) : randerss simil le 14 Fév 2021
The functuon input argument must call eventdata when the button is pushed.
Claudee Khiarra Directo
Claudee Khiarra Directo le 14 Fév 2021
changed it to eventData, and still no stem plot showing up in the GUI

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