Area under a shape?

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Niklas Kurz 2020-7-18

评论： Niklas Kurz 2020-7-19

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.

KSSV 2020-7-18

Read about polyarea, convhull.

convhull gives you coordinates of the points which defines your shape, with these corodinates youc an use polyarea.

Niklas Kurz 2020-7-19

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 2020-7-19

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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