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ms
Posts:
61
Registered:
11/6/06
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BODE function - frequency from rad/s to hz?
Posted:
Mar 29, 2011 1:37 PM
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Dear Group,
I have been trying to change the frequency from rad/s to hz when using
the BODE function. That is, when using the BODE function to plot
Amplitude and Phase, the x axis is automatically in rad/s and on a log
scale. I would like to change it to hertz and on a linear scale. Is
there a way to change this so that it will use hz and a linear scale?
I know you can convert it on your own when defining outputs of the
BODE function, like:
[magnitude, phase, freq] = bode(X);%when X is iddata
freq_hz = freq/(2*pi);
I also looked on previous posts and some suggested using
set(cstprefs.tbxprefs,'FrequencyUnits','Hz')
OR
ctrlpref
OR
fkids=get(gcf,'children');
kh=findobj(fkids,'tag','ResponseObjectContextMenu');
uh=get(kh,'UserData');
set(uh,'FrequencyUnits','Hz')
none of which seem to work in Matlab v.R2008
Any help would be greatly appreciated!
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