build0 (2,3), (5,4), (9,6), (4,7), (8,1),: (7,2)
   nearest0 9 2
┌───────┬─┬───┐
│1.41421│6│8 1│
└───────┴─┴───┘
   build0 dataset
   nearest0 pnt
┌─────────┬────┬──────────────────────────┐
│0.0387914│1000│0.978082 0.767632 0.392523│
└─────────┴────┴──────────────────────────┘