Draw a polygon on the map or paste a geoJSON and explore how the s2.RegionCoverer covers it with S2 cells depending on the min and max levels

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Preview

preview

Summary

Draw a polygon on the map or paste a geoJSON and explore how the s2.RegionCoverer covers it with S2 cells depending on the min and max levels. Drop a marker and inspect the corresponding S2 cell.

  • Display s2 cells on leaflet map using the region coverer.
  • Convert geojson features to cell unions depending on the min and max levels (supported only Polygons and Points).
  • Draw points and polygons.
  • Check point & circle intersection with the geoJSON features.

Quick start

 go run cmd/s2-geojson/main.go

Docker

docker run -p 8080:8080 --rm lmaroulis/s2-geojson

License

This project is licensed under the MIT License - see the LICENSE file for details.

Owner
Leonidas Maroulis
Leonidas Maroulis
https://github.com/pantrif/s2-geojson
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Comments
  • H3 integration

    H3 integration

    Changes:

    • Adds support for H3 covering and visualization on the map. The H3 covering route returns the compacted (less fine-grained) set of hexagons that cover a given polygon. Enable it by clicking the checkbox in the H3 API tab (will disable S2 features). Set the resolution (value between 1 and 16), anything above 12 might return a lot of hexagons.

    Before running:

    • Install H3 (go package only contains bindings) with brew install h3

    Breaks tests because the actual H3 code cannot be vendored with the rest of the Go libraries. See related issue here.

    Screenshot 2020-03-29 at 8 08 36 PM
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