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| polyarea | Examples See Also |
A = polyarea(X,Y)
A = polyarea(X,Y,dim)
A = polyarea(X,Y)
returns the area of the polygon specified by the vertices in the vectors X and Y.
If X and Y are matrices of the same size, then polyarea returns the area of polygons defined by the columns X and Y.
If X and Y are multidimensional arrays, polyarea returns the area of the polygons in the first nonsingleton dimension of X and Y.
A = polyarea(X,Y,dim)
operates along the dimension specified by scalar dim.
L = linspace(0,2.*pi,6); xv = cos(L)';yv = sin(L)'; xv = [xv ; xv(1)]; yv = [yv ; yv(1)]; A = polyarea(xv,yv); plot(xv,yv); title(['Area = ' num2str(A)]); axis image
convhull Convex hull
inpolygon Detect points inside a polygonal region