How to plot more points with bodeplot
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I'm making bode plots of transfer functions, but sometimes I want to check the magnitude a specific frequency and I can't check it because Matlab didn't make a point there (or anyware nearby). Does anyone knows how to force Matlab to make plot points? I'm using bodeoptions to convert the frequency scale from rad/s to Hz, but I could not find any option regarding how many points do I want to plot, or the frequency range. Thanks!
回答（1 个）
Rajiv Singh
2012-4-3
0 个投票
You can specify the frequency vector you want as an input argument to BODE or BODEPLOT. You can also fetch the magnitude/phase explicitly [mag, phase] = bode(sys, my_desired_frequencies)
2 个评论
Diego
2012-4-3
Pierre Chassard
2022-10-4
Thank you;
figure(3)
h=bodeplot(FT,'r',(100:1:10000)*(2*pi)) ;
opt = getoptions(h);
opt.FreqUnits = 'Hz' ;
opt.Xlim = [100 , 10000] ;
opt.PhaseMatching= 'on';
opt.Ylim = {[-50 20] [-180 0]};
setoptions(h,opt);
title('FTglobale') ;
legend('FTglobale');
grid on
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2022-10-4
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