Extract data points from bodemag plot
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Looking for a way to extract the data points of the magnitude from a bodemag plot. How can this be done?
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Accepted Answer
Star Strider
on 25 Sep 2022
it would likely be easier to use the approach bode in Obtain Magnitude and Phase Data. (Remember to use the squeeze function with those, if necessary.)
This seems to work —
H = tf([1 0.1 7.5],[1 0.12 9 0 0]);
bodemag(H)
Ax = gca;
% get(Ax)
Lines = findobj(Ax, 'Type','Line');
% L1 = Lines(1);
L2 = Lines(2);
X = L2.XData
Y = L2.YData
.
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