Show HN: Countrycheck: which country is this point in?

Category: library

Tags: dggs, geospatial, grid-system, triangular, python-sdk, javascript-sdk, cloudflare-worker

Score: 8.0/10 (Innovation: 8, Technical: 9, Documentation: 8, Utility: 7)

Trifold T3 is a hierarchical triangular Discrete Global Grid System (DGGS) with exact nesting, addressing the Earth using icosahedron-based triangles. It offers a unique combination of exact hierarchical aggregation, multiple address encodings (compact, path, uint64), and a full SDK for Python and JavaScript. Its innovation lies in solving the nesting problem that hexagon and square grids struggle with, making it highly suitable for lossless multi-resolution geospatial analysis.

Target audience: geospatial developers, data engineers, GIS researchers

Repository: https://jaakla.github.io/trifold/countrycheck.html · Python · MIT

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