381 reputation
414
bio website
location Berlin, Germany
age 45
visits member for 2 years, 9 months
seen yesterday

Author of the fast and flexible open source route planner GraphHopper. Try it out here


Apr
7
comment Need to get distance matrix for large set of points on-the-fly
You'll need to take care that it downloaded the area before you query it with this. Automatic download could work too but will make the first queries extremely slow
Apr
7
comment Need to get distance matrix for large set of points on-the-fly
GraphHopper uses OpenStreetMap, but you can use other formats with custom import procedure like ordnance survey has done. The speed of the Matrix API heavily depends on the distance of the locations itself, like 1 to 20 minutes
Apr
6
answered Need to get distance matrix for large set of points on-the-fly
Mar
7
revised Creating drive time polygons using open source tools
added 26 characters in body
Mar
6
answered Create my own navigation/routing system
Feb
2
answered Developing an iOS GPS App
Feb
2
comment Pricing of Directions/Routing/Itinerary APIs?
We also offer an API with lower entry prices and showing the pricing clear (currently only after you log in): graphhopper.com/#directions-api
Jan
23
comment Algorithm to scan a road network geometry using directions service
That was the reason I was suggesting GraphHopper and OpenStreetMap
Jan
21
comment Algorithm to scan a road network geometry using directions service
But this 'discovery' is easily done when you traverse the graph around one location. But probably I do not really understand your problem (?)
Jan
21
comment Algorithm to scan a road network geometry using directions service
Instead of a remote Directions Service you could traverse the network in your boundary via an offline solution like GraphHopper (warning: I'm the author) and fetch the network topology as well as the geometry
Jan
14
comment What can I use to calculate drive times /with/ traffic considered?
If you have the traffic data for your area you can use several tools from openstreetmap
Jan
12
comment How to find a route given a set of noisy points
I've now also implemented this idea in a rough prototype: github.com/karussell/map-matching
Jan
12
answered Real time map matching using ArcGIS Desktop?
Jan
12
answered Algorithms for matching segments
Jan
12
revised Different approaches for map matching : links / ideas?
added 34 characters in body
Dec
15
comment Routing ensuring all areas are touched
You can just create an issue, not sure if I can follow here :)
Dec
11
comment Fast Offline OSM Routing Library to Replace MoNav (.NET)
You could try GraphHopper with iKVM
Dec
11
answered Routing ensuring all areas are touched
Nov
9
revised Alternatives to pgRouting
added 7 characters in body
Oct
28
comment How to use OSM xml extracts? Can I make an offline app in Android using OSM?
For large areas or high zoom level I doubt that image tiles will solve the problem for mobile offline usage