uniformly distributed points inside a geojson feature / polygon

1-README.md

Description

This script generates points inside a given geojson feature / polygon using turf.

You can use geojson for visualization or creating your own geojson by hand.

Input

Output

2-script.js

import { readFileSync } from 'fs'
import { URL } from 'url'
import bbox from '@turf/bbox'
import pointGrid from '@turf/point-grid'

const FEATURE_FILE_PATH = new URL('./4-my-polygon.geojson', import.meta.url).pathname
const POINT_DISTANCE_IN_KM = 5;

const feature = JSON.parse(readFileSync(FEATURE_FILE_PATH, 'utf-8'))
const boundingBox = bbox(feature)
const points = pointGrid(boundingBox, POINT_DISTANCE_IN_KM, { unit: 'kilometers', mask: feature })

console.log(JSON.stringify(points))

3-package.json

{
  "name": "geopoints",
  "version": "1.0.0",
  "type": "module",
  "description": "calculate the geopoints inside the given polygon",
  "main": "2-script.js",
  "author": "Yengas",
  "license": "ISC",
  "dependencies": {
    "@turf/bbox": "^6.5.0",
    "@turf/point-grid": "^6.5.0"
  }
}

4-my-polygon.geojson

{
  "type": "Feature",
  "properties": {},
  "geometry": {
	"type": "Polygon",
	"coordinates": [
	  [
		[
		  29.11102294921875,
		  41.24167453726628
		],
		[
		  28.649597167968746,
		  41.35104125623227
		],
		[
		  28.3447265625,
		  41.03793062246529
		],
		[
		  28.6029052734375,
		  40.950862628132775
		],
		[
		  28.95172119140625,
		  40.950862628132775
		],
		[
		  29.10003662109375,
		  40.93322773476865
		],
		[
		  29.131622314453125,
		  40.88963898943264
		],
		[
		  29.3994140625,
		  40.72124187397379
		],
		[
		  29.56832885742187,
		  40.73893324113601
		],
		[
		  29.708404541015625,
		  41.16211393939692
		],
		[
		  29.11102294921875,
		  41.24167453726628
		]
	  ]
	]
  }
}