Change ylabels on Bode plot

2015 6 21
1 个回答
更新时间：2015 6 27
6 次查看（30 天）

0 个投票

I want to change the ylabels on a Bode plot. As you know with the command bode there are two plots, one for magnitude and one for phase. But when you write:
ylabel('TheLabel')
Only the word "Phase" is changed to "TheLabel", but the word "Magnitude" is unchanged.
How do you write in order to change both the word "Magnitude" and the word "Phase"?

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回答（1 个）

Azzi Abdelmalek
Azzi Abdelmalek 2015-6-21
编辑：Azzi Abdelmalek 2015-6-21

1 个投票

bode(tf(1,1:2)) % Example
axes=findobj('type','axes')
h_magnitude=get(axes(2),'YLabel')
h_phase=get(axes(1),'YLabel')
set(h_magnitude,'String','NewMagnitude')
set(h_phase,'String','NewPhase')

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Oak Lore
Oak Lore 2015-6-21
Ok, your code works on it's own, but not when I try to incorporate it in my own. I wrote
s=zpk('s');
p1=1;
Hs=1/(1+s/p1);
bode(Hs, {0.1,10})
When I try to combine it with your code I get the following error message:
Error using InputOutputModel/subsref (line 43)
Subscript no. 2 is out of range.
Error in Rellpol (line 21)
bode(Hs(1,1:2)) % Example
How should I write in order to make it work together with my code? Please note that I want to be able to set the width of the x-axis manually, so that's why I wrote this in bold:
bode(Hs {0.1,10})
How should I write to do all this together?
Azzi Abdelmalek
Azzi Abdelmalek 2015-6-21
This works fine with me
Oak Lore
Oak Lore 2015-6-21
How do you write then? Can you post the code please?
Walter Roberson
Walter Roberson 2015-6-27
s=zpk('s');
p1=1;
Hs=1/(1+s/p1);
bode(Hs, {0.1,10})
axes=findobj('type','axes')
h_magnitude=get(axes(2),'YLabel')
h_phase=get(axes(1),'YLabel')
set(h_magnitude,'String','NewMagnitude')
set(h_phase,'String','NewPhase')

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