How to calculate the inside area of a closed shape given a set of coordinates describing the that shape

Question

I have two arrays https://i.stack.imgur.com/2EyfL.png, first one is y coordinates and the second one is x coordinates, when I plot a diagram with these coordinates, it becomes a closed shape like the attached image https://i.stack.imgur.com/rOQ7A.png, I'm asking for a way to calculate the inside area of this closed shape in python.

score 0 · Answer 1 · answered Mar 24 '21 at 15:34

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How to calculate area of an organic shape?

Check out this link, I think it has the same question as you.

Even though it uses another language, you can try and convert it to Python code.

answered Mar 24 '21 at 15:34

PythonPikachu8

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Thank you very much, that was very helpful – Amir Shahmohamadi Apr 03 '21 at 05:10
Yup! No problem. – PythonPikachu8 Apr 03 '21 at 16:18

score 0 · Accepted Answer · answered Mar 24 '21 at 15:36

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Check out the code here: Calculate area of polygon given (x,y) coordinates

def PolyArea(x,y):
    return 0.5*np.abs(np.dot(x,np.roll(y,1))-np.dot(y,np.roll(x,1)))

answered Mar 24 '21 at 15:36

Iñigo Moreno

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Thank you very much, that was very helpful – Amir Shahmohamadi Apr 03 '21 at 05:09

How to calculate the inside area of a closed shape given a set of coordinates describing the that shape

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