Plotting in Matlab appdesigner

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Claudee Khiarra Directo
评论： Mario Malic 2022-11-5
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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采纳的回答

Mario Malic
Mario Malic 2021-2-14
编辑：Mario Malic 2021-2-14
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.
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Ignacio Roa
Ignacio Roa 2022-11-5
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 2022-11-5
Do some tutorials first and then post a question when you get stuck.

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更多回答（1 个）

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

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