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Project Summary

The PH-Tree is a multi-dimensional spatial index structure. It is a 'trie' version of a quadtree. Properties: no rebalancing, ever. Depth limited to 64 nodes. Fast updates, window queries and kNN queries. Scales very well with large datasets (10M+) and prefers clustered data over evenly distributed data. PDFs with a description can be found in the source code.

Tags

index indexing indexstructure java kdtree knn multi-dimensional multidimensional nearestneighbor nearestneighborssearch quadtree rangequeries rtree spatial spatialindexes trie

In a Nutshell, PH-Tree...

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Languages

Java
100%
XML
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30 Day Summary

Sep 13 2026 — Oct 13 2026

12 Month Summary

Oct 13 2025 — Oct 13 2026
  • 0 Commits
    Down -11 (100%) from previous 12 months
  • 0 Contributors
    Down -1 (100%) from previous 12 months

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