I was also playing around with this and GraphHopper as well: https://graphhopper.com/blog/2016/01/19/alternative-roads-to...
Using some simple modification of the MiniUIGraph tool which you can find here: https://gist.github.com/karussell/768e828a01f71ac7f46c
BTW: If you have questions related to GraphHopper feel free to ask them :)
BTW2: Funny how this visualization side-project got more stars in a few hours then one of the used routing engines in 4 years. Bad marketing ;) ?
I was also playing around with this and GraphHopper as well: https://graphhopper.com/blog/2016/01/19/alternative-roads-to...
Using some simple modification of the MiniUIGraph tool which you can find here: https://gist.github.com/karussell/768e828a01f71ac7f46c
BTW: If you have questions related to GraphHopper feel free to ask them :)
BTW2: Funny how this visualization side-project got more stars in a few hours then one of the used routing engines in 4 years. Bad marketing ;) ?