geohashes-near

Library for finding neighboring geohashes within a radius with optional polygon masking.

Installation

Using npm: npm i geohashes-near

Using pnpm: pnpm i geohashes-near

Usage

Fist import the module

In a CommonJS env

const getHashesNear = require('geohashes-near');

Using ES imports

import getHashesNear from 'geohashes-near';

And then run the function

const position = { latitude: 40.455438, longitude: -3.693636 };
const radius = 20; // 20 meters
const units = 'meters';
const precision = 9;
const hashesInRadius = getHashesNear(position, precision, radius, units);

// hashesInRadius is ["ezjq5uwqk","ezjq5uwqm","ezjq5uwqj","ezjq5uwmv","ezjq5uwmu","ezjq5uwmg","ezjq5uwq5","ezjq5uwq7","ezjq5uwqs","ezjq5uwqt","ezjq5uwqh","ezjq5uwqe","ezjq5uwqw","ezjq5uwqq","ezjq5uwqn","ezjq5uwmy","ezjq5uwmw","ezjq5uwmt","ezjq5uwms","ezjq5uwme","ezjq5uwmd","ezjq5uwmf","ezjq5uwq4","ezjq5uwq6","ezjq5uwqd","ezjq5uwqu","ezjq5uwqv","ezjq5uwqg","ezjq5uwqy","ezjq5uwqf","ezjq5uwqx","ezjq5uwqr","ezjq5uwqp","ezjq5uwmz","ezjq5uwmx","ezjq5uwmr","ezjq5uwmq","ezjq5uwmm","ezjq5uwmk","ezjq5uwm7","ezjq5uwm6","ezjq5uwm3","ezjq5uwm9","ezjq5uwmc","ezjq5uwq1","ezjq5uwq3","ezjq5uwq9","ezjq5uwqc","ezjq5uww2","ezjq5uww0","ezjq5uwtb","ezjq5uwt8","ezjq5uwmn","ezjq5uwmj","ezjq5uwmh","ezjq5uwm5","ezjq5uwm4","ezjq5uwm1","ezjq5uwm2","ezjq5uwm8","ezjq5uwmb","ezjq5uwq0","ezjq5uwq2","ezjq5uwq8","ezjq5uww1","ezjq5uwtc","ezjq5uwjx","ezjq5uwjz","ezjq5uwnp","ezjq5uwnr"]

Table of contents

Type aliases

• Coord

Functions

• default

Type aliases

Coord

Ƭ Coord: object

Type declaration:

Name	Type
latitude	number
longitude	number

Functions

default

▸ default(coord: Coord, precision: number, radius: number, units: Units, maskPolygon?: Polygon | MultiPolygon): string[]

Gets geohashes of a certain precision near the given coordinate

Parameters:

Name	Type	Description
coord	Coord	The central coordinate
precision	number	The geohash precision
radius	number	The radius in which to find neighboring geohashes
units	Units	Units for radius
maskPolygon?	Polygon | MultiPolygon	Polygon to use as mask to filter geohashes by their centroid

Returns: string[]

Array of neighbouring geohashes in radius