Crystal Lang S2 Cells

Maps Lat Lon coordinates to S2 Cells. Useful for things like storing points in InfluxDB

Installation

1. Add the dependency to your shard.yml:

   dependencies:
     s2_cells:
       github: spider-gazelle/s2_cells
   

2. Run shards install

Usage

require "s2_cells"

lat = -33.870456
lon = 151.208889
level = 24

cell = S2Cells.at(lat, lon).parent(level)
token = cell.to_token # => "3ba32f81"

# Or a little more direct
S2Cells::LatLon.new(lat, lon).to_token(level)