Matlab: Find area enclosed by points (x,y)

Question

I\'ve got 8 points that create the outline of an eight-sided polygon in two-dimensional space. I need to find the area enclosed be these points, but how do I do that using matla

Answer 1

For calculating area and even volume you can use convhull.

Answer 2

You can use polyarea:

ar = polyarea(B(:, 1), B(:, 2));

Answer 3

I would go with trapezoid:

Area = trapz(B(:,1),B(:,2));