How to calculate an irregular shape area?

Dear all,

I have a shape model in 3D space. I project it onto a 2D plane. Now I have to calculate the area of its projection area. Since the area is irregular, how can I calculate it? Is there any method in matlab can help me to make it?

Many thanks for your help.

Best wishes Wenlong

[Walter Roberson]

polyarea() ?

[Izaro]

I have the same problem. How do you solve it?

Thanks

[Mathieu NOE]

hello

as suggested by @Walter Roberson polyarea does the job even for irregular or concave shapes

Polyarea function concave or convex - MATLAB Answers - MATLAB Central