osm-routing-app

osm-routing-app

Demonstrating routing with path finding algorithms using Neo4j graph database and data from OpenStreetMap.

• create-react-app
• neo4j-javascript-driver
• neo4j-graphql.js
• Mapbox GL JS

Installation

Set environment variables:

REACT_APP_NEO4J_URI=XXX
REACT_APP_NEO4J_USER=XXX
REACT_APP_NEO4J_PASSWORD=XXX
REACT_APP_MAPBOX_TOKEN=XXX

these can be added to .env

Clone this git repo, and then

This project is composed of a simple React web app and a GraphQL API created using neo4j-graphql.js. In addition, a Neo4j database with OpenStreetMap data is required.

Database preparation

• Prepare the Neo4j database by importing OpenStreetMap data and extract the routing graph using this library.

TODO: example for POT / routing graph extract.

• Ensure each PointOfInterest node has a poi_id property set:

MATCH (a:PointOfInterest)
WITH a,a.name + toString(a.location.latitude) + toString(a.location.longitude) AS poi
SET a.poi_id = poi

• Install APOC and Graph Algorithms database plugins.