k = convhull(___,'Simplify',tf)
specifies whether to remove vertices that do not contribute to the area or volume of the
convex hull. tf is false by default.

For 2-D points, k is a column vector containing the row
indices of the input points that make up the convex hull, arranged
counterclockwise.

For 3-D points, k is a 3-column matrix representing a
triangulation that makes up the convex hull. Each row represents a facet of the
triangulation. The values represent the row indices of the input points.

av — Area or volume scalar

Area or volume of the convex hull, returned as a scalar.

Tips

To plot the output of convhull in two dimensions, use the plot function. To plot the output of convhull in three
dimensions, use trisurf or trimesh.

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