[OSM-dev] GraphHopper Maps 0.1

Peter K peathal at yahoo.de
Tue Jul 23 15:12:16 UTC 2013


Hi Eugene,

thanks for your feedback!

> 1. It seems turn restrictions are not taken into account in the routing?

yes

> 2. It seems that the internal routing graph has too few nodes from
> where you can start or end. I think this might be a result of the
> optimizations you have performed to make the router fast. So if you
> wanted to route to a POI along a one-way street, you might get routed
> to the point at the end of the one-way street and the route does not
> pass through that one-way street.
>
> Here's an example to make the second issue clearer:
> http://graphhopper.com/maps/?point=14.557141%2C121.021051&point=14.559306%2C121.020455

Indeed. This will be fixed with the next release as it is not only
important for car but also for hiking etc:
https://github.com/graphhopper/graphhopper/issues/27

Regards,
Peter.


> Hi,
>
> Here's some feedback:
>
> 1. It seems turn restrictions are not taken into account in the routing?
>
> 2. It seems that the internal routing graph has too few nodes from
> where you can start or end. I think this might be a result of the
> optimizations you have performed to make the router fast. So if you
> wanted to route to a POI along a one-way street, you might get routed
> to the point at the end of the one-way street and the route does not
> pass through that one-way street.
>
> Here's an example to make the second issue clearer:
> http://graphhopper.com/maps/?point=14.557141%2C121.021051&point=14.559306%2C121.020455
>
> I would expect the route to pass along the one-way street.
>
> Eugene
>
>
> On Tue, Jul 23, 2013 at 3:22 PM, Peter K <peathal at yahoo.de
> <mailto:peathal at yahoo.de>> wrote:
>
>     Hi there,
>
>     yesterday we released the first public version of our fast and
>     Open Source routing engine called GraphHopper. This could be
>     especially interesting for Java developers. You can also try our
>     web application <http://graphhopper.com/maps/> with world wide
>     coverage. See the full anouncement here.
>     <https://karussell.wordpress.com/2013/07/22/graphhopper-maps-high-performance-and-customizable-routing-in-java/>
>
>     Let me know if you encounter problems or if you have questions!
>
>     Regards,
>     Peter.
>

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