Introduction A few years ago, we wrote a tutorial to show you how to model a traveling salesman problem with a week-planning horizon. Since then we have been improving our API a lot and I would like to show you how easy it is now to model this with driver shifts. For example, suppose you […]
With the GraphHopper Directions API it is easy to calculate the route from A to B including multiple intermediate waypoints. Our customers often use the Route Optimization API to get an optimized order of many deliveries. To deliver your packages or services in real world you additionally need a navigation application where you need turn […]
The Route Optimization API works via an HTTP endpoint and you POST a JSON document to https://graphhopper.com/api/1/vrp?key=[YOUR_KEY] This requires an API key that you can get here: login and go to API keys and generate an API key by clicking the Add API key button. Copy it and paste it to [YOUR_KEY]. Let us start […]
In our previous post we introduced the GraphHopper Navigation SDK. Today we’ll show the detailed steps on how to customize our GraphHopper Navigation demo app that uses the GraphHopper Navigation SDK. Android Studio Installation For Android development you need to install Android studio: Download Android Studio for your operating systen (~1GB) https://developer.android.com/studio/ Install Android Studio […]
This article shows how to solve a time-dependent vehicle routing problem with cargo bikes and small trucks with GraphHopper’s Optimizaton API. Lets assume that you want to solve a vehicle routing problem with a mixed fleet. The fleet consists of cargo bikes and small trucks, and you want to employ the fleet such that products […]
These are the three basic steps to solve a real world vehicle routing problem with GraphHopper’s Optimization API: 1) Assign geo locations to (road) network 2) Calculate travel times and distances 3) Solve vehicle routing problem Each step impacts the solution of the vehicle routing problem. This article illustrates how 1) – the assignment of […]
