rubillionaire / georender-geojson

convert between geojson and georender

georender-geojson

convert between the georender format and geojson

usage

usage: georender-to-geojson [FILE] {OPTIONS}
usage: geojson-to-georender [FILE] {OPTIONS}
usage: georender-geojson encode [FILE] {OPTIONS}
usage: georender-geojson decode [FILE] {OPTIONS}

Convert between georender and geojson formats:
geojson to georender (encode) or georender to geojson (decode)

  -t --tag      For encoding, set a key=value as a tag.
  -e --eval     For encoding, modify properties with a js expression.
  -r --require  For encoding, modify properties with a js file.
  -f --format   Input or output format: hex, base64, or lp (default).
  -o --outfile  Write output to file or "-" for stdout (default).
  -h --help     Show this message.

Eval expressions have "feature" and "properties" variables in scope.
Expressions can return a new properties object or modify in-place.

A file required with --require should set a module.exports with a
`function (properties, feature) {}` and return a new properties
object or modify properties in-place.

example

geojson to georender:

var lpb = require('length-prefixed-buffers')
var toGeorender = require('georender-geojson/to-georender')
var encoded = toGeorender({
  type: 'FeatureCollection',
  features: [
    {
      type: 'Feature',
      geometry: {
        type: 'MultiPolygon',
        coordinates: [
          [[[10,20],[30,40],[50,0],[10,20]]],
          [[[0,50],[40,55],[20,35],[0,50]]],
        ],
      },
    }
  ],
})
process.stdout.write(lpb.from(encoded))

georender to geojson:

var lpb = require('length-prefixed-buffers')
var toGeoJSON = require('georender-geojson/to-geojson')
var decoded = toGeoJSON(lpb.decode(Buffer.from(
  'AT0DxwUABgAAIEEAAKBBAADwQQAAIEIAAEhCAAAAAAAAAAAAAEhCAAAgQgAAXEIAAKBBAAAMQgIBAAIEAwUA',
  'base64'
)))
console.log(JSON.stringify(decoded))

api

var toGeorender = require('georender-geojson/to-georender')
var toGeoJSON = require('georender-geojson/to-geojson')
var { toGeorender, toGeoJSON } = require('georender-geojson')

var buffers = toGeorender(geojson)

Convert an object of geojson data into an array of buffers.

var geojson = toGeoJSON(buffers)

Convert an array of buffers into an object of geojson.

license

bsd

install

npm install georender-geojson