trying to index whole sine wave positively with time stamp

Question

ALI DRIDI 2020-8-13

0
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https://ww2.mathworks.cn/matlabcentral/answers/579084-trying-to-index-whole-sine-wave-positively-with-time-stamp

回答： Maadhav Akula 2020-8-18

Hi, i was trying to plot the positive magnitude of the sine wave as a simulation for the rectified voltage the problem is when i use (idx) for plotting the positive magnitude i cant plot it with the time stamp even i used linsplace to equal the time variable (T = 0:(1/(100*F)):(10/F); ) with DC_Voltage=((Vdc) * sin((2)*(pi*F)*(T))); but an error shows to me that the input variables are not equal in length,below is the private function used:

function Output_Voltage(app,Vdc,F,T)

DC_Voltage = ((Vdc) * sin((2)*(pi*F)*(T)));

idx = DC_Voltage>=0;

plot(app.UIAxes,DC_Voltage(idx));

app.UIAxes.Title.String = 'Rectified DC Voltage';

hold(app.UIAxes,'off')

app.UIAxes.YLabel.String = 'Vdc';

end

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this is the output that i get from plot(app.UIAxes,DC_Voltage(idx)); without time stamp, but when i do plot(app.UIAxes,T,DC_Voltage(idx)); I get the error message.