| MATLAB Function Reference | Search Help Desk |
| convhull | Examples See Also |
K = convhull(x,y) K = convhull(x,y,TRI)
K = convhull(x,y)
returns indices into the x and y vectors of the points on the convex hull.
K = convhull(x,y,TRI)
uses the triangulation (as obtained from delaunay) instead of computing it each time.
xx = -1:.05:1; yy = abs(sqrt(xx)); [x,y] = pol2cart(xx,yy); k = convhull(x,y); plot(x(k),y(k),'r-',x,y,'b+')
delaunay Delauney triangulation
polyarea Area of polygon
voronoi Voronoi diagram