Regions with many nearby points keep subdividing. Regions with few or no points stay large. The tree adapts to the data: dense areas get fine-grained cells, sparse areas stay coarse. The split grid is predetermined (always at midpoints), but the tree only refines cells that need it. Sparse regions stay as single large nodes while dense regions subdivide deeply.
Украинцам запретили выступать на Паралимпиаде в форме с картой Украины22:58
，这一点在新收录的资料中也有详细论述
Start: 48.73829, 13.41383
SELECT pg_size_pretty(