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Thickness of height profile in Matlab

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I have aploted AFM height profiles from images using plot fuction in matlab.
I also need to find the difference or thickness from these height profiles, Is there a way I can do that in Matlab.
Here is what I have so far
This image has two height profiles and I can plot the maximum and minimum data lines for the profile.
I also need the difference on the plot. This is what I want (I use power point for this)
I have attached the code I use. Any help will be appreciated.
Thank you.

Accepted Answer

Nora Khaled
Nora Khaled on 23 Nov 2020
Try this
% to plot vertical line
ymin=B % min point
ymax=A %max point
line([xAxis xAxis], [ymin ymax]);
% add text
txt = 'Thickness';
  1 Comment
Suneet Kale
Suneet Kale on 29 Nov 2020
Thank you that helps but I have to process close to 30+ graphs like thi.
Is there a way where I can do it without writng custom values for everything?

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