Add patch to the background of a bodeplot

Question

Martin Steinisch 2017-5-24

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https://ww2.mathworks.cn/matlabcentral/answers/341755-add-patch-to-the-background-of-a-bodeplot

回答： Star Strider 2017-5-24

I've a little function in which I create a bodeplot, like this one:

function RequirementTest01
  % create a bode plot
  H = tf([1 0.1 7.5],[1 0.12 9 0 0]);
  %bode(H,{0.1,10});
  bodeHandle = bodeplot(H,{0.1,10});
  get(bodeHandle)
end

Now I have the coordinates of a polygon, and I want to create a patch that should be inserted in the background of the plot. Something like the following figure:

How can I insert the patch in the plot?

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Answer 1

Star Strider 2017-5-24

1
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https://ww2.mathworks.cn/matlabcentral/answers/341755-add-patch-to-the-background-of-a-bodeplot#answer_268260

Unlike the Signal Processing Toolbox freqz and freqs commands that produce ordinary subplot figures, bode and bodeplot do not offer any significant ability to change the plot (other than some of the options in bodeplot.