Remove Frequency Label bodelplot

I have a figure in which i plot multiple bode plots in a for loop, e.g. this way:

figure(1)

hold on;

for j=1:len

% Calculate stuff

figure(1)

bodeplot(G(j));

% Do other stuff

% Plot other stuff into other figure

end

The result you see in the attached picture, it is working fine. Afterwards I want to do some axis manipulation, change the figure size, add some labels and save it into a pdf and png. The problem I face is, that I don't get rid of the "Frequency (Hz)" label which gets automatically printed below X-axis of the phase plot. How can I remove this? I tried to acess the axes of the bodeplot via figure(1).Children. I find the axes for phase and magnitude there, but the labels are not corresponding to them. Using bodeoptions is also not working:

opts.XLabel.String = '';

bodeplot(G(j),opts);

because this removes the "Frequency", but not the "(Hz)" so instead of "Frequency (Hz)" it now says only "(Hz)".

[Benjamin Gelzinnes]

I have the same Problem..

I need to have a Bodeplot with a different x-Label.

With the bodeplot function you can change y-Labels by using:

graphics_handle=gcf;

graphics_handle.Children(2).YLabel.String = 'Phase in Deg';

graphics_handle.Children(3).YLabel.String = 'Amplitude in dB';

But when I add graphics_handle.Children(2).XLabel.String = 'Frequenz in Hz';

It just adds a line to the x-Axis. Like why?

Is there any way to remove the default x-Label?

Answer 1

[Voss]

@J B, @Benjamin Gelzinnes: Apparently, the XLabel of a Bode diagram created with bodeplot belongs to an axes whose HandleVisibility is 'off', which means you won't see it in the list of the figure's Children but you can find it using findall.

Make three bode plots:

G = [tf([1 2 1],[1 1 2]) tf([1 2 2],[2 1 2]) tf([2 2 1],[1 2 2])];
len = numel(G);

f = figure();
hold on;
for j=1:len
    bodeplot(G(j));
    % Do other stuff
    % Plot other stuff into other figure
end

The figure's Children are two axes and a context menu:

f.Children

ans = 
  3×1 graphics array:

  ContextMenu
  Axes
  Axes

But actually, there's another axes in the figure (which is the one you want to modify):

ax = findall(f,'Type','axes')

ax = 
  3×1 Axes array:

  Axes    (Bode Diagram)
  Axes
  Axes

But its 'HandleVisibility' is set to 'off':

get(ax,'HandleVisibility')

ans = 3×1 cell array
    {'off'}
    {'on' }
    {'on' }

Anyway, now that you have the handle to the correct axes, you can modify it at will:

ax(1).XLabel.String = 'whatever you want';

[Blake Cole]

Amazing! Thank you!!