[GraphHopper] Dynamic routing for Crisis/Disaster Areas

[Markware Software Services]

Thanks Peter, will have a look and see how I can make this work. Appreciate
your time and input. Cheers Mark


Regards

Mark Cupitt

"If we change the world, let it bear the mark of our intelligence"

See me on LinkedIn <http://ph.linkedin.com/in/markcupitt>
*See me on StackExchange <http://gis.stackexchange.com/users/17846/mark-c>*

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On Mon, Jan 20, 2014 at 8:41 PM, Peter K <peathal at yahoo.de> wrote:

> Hey Mark,
>
> yes, downloading only the graph changes is possible at the low level -
> there is currently no OSM changeset reader or similar.
>
> But you already indicated that a fresh import is already better and so
> ... if you want to integrate your changes while import have a look into
> the OSMReader where an edge is created via "graph.edge" and you can
> manipulate the access flags too.
>
>
> > I do not fully understand CH yet, but it seems to limit flexibility. I
> guess it is a
> > tradeoff between sped and flexibility.
>
> Exactly.
>
>
> > One option we have is to use CH on our servers and download the route
> to the device??
>
> Sure, you can do this too. But having the entire up-to-date graph (be it
> with or without shortcuts due to CH) on the device probably makes more
> sense in your case.
>
> Regards,
> Peter.
>
>
> > Hi Peter
> >
> > Thanks for the response, because of the number of Android applications
> > we expect to be out out in the field, I was considering  uploading
> > changes to the road status to a database in semi real time (or when
> > the responder returns to a point where they have wifi) then doing a
> > new map on a once or twice daily basis, extracting the current road
> > status from the database.
> >
> > The reason for this is to also pick up the data from the HOT Mappers
> > who are incredible active, so we want that data on our Planning Site
> > as well as downloadable on the devices, so that the responders have
> > the latest information available to them
> >
> > I have to admit that I am not a Java Person, although necessity is
> > making me devote some time to learning, so I thought I would ask the
> > people with a great deal more experience than me to point me in he
> > right direction to implement this.
> >
> > I do not fully understand CH yet, but it seems to limit flexibility. I
> > guess it is a tradeoff between sped and flexibility.
> >
> > One option we have is to use CH on our servers and download the route
> > to the device??
> >
> > Also, I had not considered just downloading the graph changes, is that
> > possible?
> >
> > Kind Regards
> >
> > Mark
> >
>
>
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