trying to make a switch case for the dropdown with options: sine,cosine,square, triangular, to plot the right wave whenever chosen, this only plots sine wave, what's wrong?

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Rana Fawzy
Rana Fawzy 2021-11-22
编辑： Srijith Kasaragod 2021-11-25
value = app.SignalGeneratorDropDown.Value;
app.t=0:0.01:1
app.A= app.AmplitudeEditField.Value;
app.f= app.FrequencyEditField.Value;
app.y=app.A*sin(2*pi*app.f*app.t);
switch value
case "Sine"
app.y=app.A*sin(2*pi*app.f*app.t);
case "Square"
app.y=app.A*Square(2*pi*app.f*app.t);
case "Cosine"
app.y=app.A*cos(2*pi*app.f*app.t);
case "Triangular"
app.y=app.A*sawtooth(2*pi*app.f*app.t);
end
plot(app.UIAxes,app.t,app.y);
xlabel(app.UIAxes,"Time")
ylabel(app.UIAxes,"Amplitude")
title(app.UIAxes,"waveform")

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回答（1 个）

Srijith Kasaragod
Srijith Kasaragod 2021-11-25
编辑：Srijith Kasaragod 2021-11-25
Hi Rana,
I have tried to recreate the issue at my end and the code seems to run correctly, with sin, cos, square and sawtooth waveforms getting plotted onto UIAxes according to dropdown input. Please ensure you have the above code inside DropDown 'ValueChangedFcn' function callback. If the issue still persists, upload your file and we shall have a look at it.
Regards.

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