A low threshold preserves detail (more leaf nodes, less compression). A high threshold merges aggressively (fewer leaves, more compression, but the image gets blocky). The grid overlay shows the quadtree structure: large cells in uniform areas, small cells where detail is preserved.
For well-distributed points, nearest neighbor search is often near O(logn)O(\log n)O(logn) in practice. In the worst case (all points clustered tightly or along a line), it can degrade to O(n)O(n)O(n), but this is uncommon with typical spatial data.
，这一点在WPS下载最新地址中也有详细论述
9️⃣ 基数排序 (Radix Sort)。关于这个话题，im钱包官方下载提供了深入分析
（四）故意制作、传播计算机病毒等破坏性程序的；
all of the optimizations described above. Then at the very end of