h3

Tech stack & purpose

H3 is a geospatial indexing system developed by Uber that partitions the world into hexagonal cells organized in a hierarchical structure, enabling spatial indexing and analysis at multiple resolutions. The core library is written in C and provides functions for converting coordinates to cells, finding cell centers and boundaries, and identifying neighboring cells, with language bindings available for Java, JavaScript, Python, and others. The project is built using C, CMake, and Make, and includes extensive testing infrastructure using fuzzing harnesses with AFL and libFuzzer as well as comprehensive documentation built with Docusaurus.

Community & reference links

• S2
• oss-fuzz
• GitHub Issues page
• Java
• JavaScript
• Python
• h3geo.org
• H3 documentation website
• others
• H3 Slack workspace
• exact logical containment but only approximate geometric containment
• H3 tag on StackOverflow

Languages

Contributors (top 30 of 105)

• Isaac Brodsky731 commits
• Nicholas Rabinowitz145 commits
• Nick Rabinowitz101 commits
• David Ellis100 commits
• 
  dependabot[bot]75 commits · 0 followers
• Isaac Hier63 commits
• Zacharias Knudsen52 commits
• AJ Friend50 commits
• temporalparts8 commits
• Kurt Smith7 commits
• Wei Wei5 commits
• Justin Hwang5 commits
• Mahesh Madhav5 commits
• Joseph Gilley5 commits
• SpaceIm3 commits
• Travis Brady3 commits
• Richard Vasquez3 commits
• Sutou Kouhei3 commits
• Sean Handley3 commits
• Thomas3 commits
• Joseph Chotard2 commits
• Thanabodee Charoenpiriyakij2 commits
• Gordon Smith2 commits
• 조형준2 commits
• ArnaudSwail2 commits
• Nico Mandery2 commits
• Donald Clark Jackson2 commits
• Aleksandr Saprykin2 commits
• gords22 commits
• Javier de la Torre2 commits