[OSRM-talk] Cannot find route between points

[Rodolphe Quiédeville]

John Aherne <jjaherne at gmail.com> writes:

> I have searched the lists for info on this subject and have found some
> references but nothing that pinpoints how to solve the problem.
>
> I have installed a copy of Project-OSRM on a Debian Wheezy 64bit and it
> works fine. So thanks for a very useful project.
>
> However, I have 2 sets of coordinates which will not route - amongst others.
>
> I use the locate and nearest commands to try and find the nearest node on a
> street.
>
> Nearest returns a street name and a new coordinate.
>
> I use the returned coordinates to find a route but still get 207 cannot
> find route between points.
>
> I have also tried this via router.project-osrm.org and get the same 207

Hi,

I did the same but got a status ok, 

"http://router.project-osrm.org/viaroute?output=json&loc=51.53474981,-0.13522952&loc=51.50287419,-0.11924942"

It's a little bit strange, 


> However, when I try my original coordinates on
> http://map.project-osrm.org/the route is calculated and does what I
> would expect.
>
> What I expect is that it draws a straight line through a set of buildings
> to the nearest node on a street from where it can calculate a route.
>
> So my problem is what is the map doing that the route calculator is not
> doing. And how can I replicate what the map is doing.

It does the same, you can grab the url called with a tool like Firefox
webdevelopper console.

> Am I right that I should use the coordinates returned by the nearest
> command as the base start and end for the routing calculation.

Yes you're right.

> Or is there some intermediate step I am missing.
>
> Any info on this would be very useful
>
> The coordinates I am using are:
>
> 51.53474981,-0.13522952
>
> 51.50287419,-0.11924942

Regards,

-- 
Rodolphe Quiédeville
Expert Tsung - Consulting en performance des SI
Tel : 06 13 79 63 41
http://blog.rodolphe.quiedeville.org