Harder, Better, Faster, Stronger Version of Uber H3 in Rust
6 months ago
- #Geospatial
- #Rust
- #Performance
- h3o is a complete rewrite of Uber H3 in Rust, aiming for easier integration, safer APIs, and better performance.
- Differential testing was used to ensure compatibility with H3, covering 756 tests, 166 integration tests, and 42 unit tests.
- Performance benchmarks show h3o outperforming H3 in 862 out of 911 test cases, with some operations up to 10x faster.
- Key optimizations include constant-time algorithms for operations like cellToParent and isPentagon, and lookup tables for cellToChildrenSize.
- h3oh3o provides a C-compatible API for easy integration with existing H3 projects, showing significant performance improvements.
- The h3o-cli tool offers a command-line interface for H3 operations, supporting multiple output formats like JSON and GeoJSON.
- thc (The H3 Compressor) introduces CHT, a compression algorithm tailored for H3, achieving up to 469x compression for dense datasets.
- Future plans include catching up with H3 4.1, optimizing slower functions, and developing more language bindings.