Area of a irregular shape

Question

I have set of points which lies on the image. These set of points form a irregular closed shape. I need to find the area of this shape. Does any body which is the normal algorit

Answer 1

There is support for area calculation of polygons in Boost.Geometry (which isn't yet accepted into boost and which is very confusing to use). Otherwise you would have to determine the polygon that is defined by your points first. From the looks of it all of your points are vertices of the polygon so this is a simply a matter of ordering your point sets correctly. Another possibility is that you are looking for the convex hull of your point set (see http://en.wikipedia.org/wiki/Convex_hull_algorithms).