healpix-subdivision

iteratively divide sections of a healpix H=4,K=3 grid

example

var grid = require('healpix-subdivision')(4)
var data = grid()
data = data.concat(grid(data[5]))
data = data.concat(grid(data[6]))
data = data.concat(grid(data[26]))
console.log(JSON.stringify(data,null,2))

click here for an interactive demo

api

var hgrid = require('healpix-subdivision')

var grid = hgrid(size)

Create a grid() function that will subdivide areas into size*size divisions.

var divisions = grid(shapes)

If shapes is not given, return the 6 initial areas.

Otherwise, return size*size divisions for the provided area given as an array of shapes which describe an equal-area tile for some zoom level.

divisions is an array of shapes arrays.

install

npm install healpix-subdivision

license

BSD