Area under a shape?

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Niklas Kurz
Niklas Kurz on 18 Jul 2020
Commented: Niklas Kurz on 19 Jul 2020
Hello, I'd really like to know how to calculate the area beneath a shape like this:
So from the outer borders to x-axis. Since the values are repeating I reckon trapz() doesn't work.

Accepted Answer

KSSV
KSSV on 18 Jul 2020
Read about polyarea, convhull.
convhull gives you coordinates of the points which defines your shape, with these corodinates youc an use polyarea.
  4 Comments
Niklas Kurz
Niklas Kurz on 19 Jul 2020
I thought there'd be a more elegant solution like with
area(Yp,Xp)
I can cast the shadow of the shape, but nothing more.
Well, I keep it simple and extract a curve manually as u advised. This works at the least.
Niklas Kurz
Niklas Kurz on 19 Jul 2020
If u need some inspiration: This User has answered the question sophisticatedly:
https://de.mathworks.com/matlabcentral/answers/565277-how-to-apply-a-fit-on-this-shape?

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