I`m looking for better methods to simplify this organic shape like this example i made. New Ideas are very welcome ! Extra: I`m looking for away to code this simple algorithm in Houdini : or even use the "for each" node... Group B Append point0 from Group A. Delete Point 0 from Group A N=number of point in group A for C in (1 to N): "point"= (point in groupA that have the smallest distance from the last object in groupB) append the "point" to group B. point number of this "point" in g