[SOLVED] Beginner wanting to use optaplanner and graphhopper to solver Vehicle Routing Problem

Beginner wanting to use optaplanner and graphhopper to solver Vehicle Routing Problem

I'm new to VRP solving. I've got optaplanner's demo VRP running.

I have about 400 text addresses as my waypoints. I've geocoded them, so I have lat/long.

I sense that I need to calculate a LOT of distances between waypoints. I've seen the file format for .vrp and as yet haven't found how to generate that format from my list of text addresses.

I sense that graphhopper might help me to do that.

I'm still getting graphopper going. I have downloaded open street map data from https://extract.bbbike.org/ in PBF format. I sense that I need to use that to that data with graphhopper to generate input to optaplanner.

am I on the right track?

can someone point me to a guide? (I realise this is pretty niche, and I might have to find my way a little...)

Thanks and Regards

Solution

Here's the code how I generated the VRP file used in optaplanner-examples.