Re: [E-devel] splitting elm_map into a new library

[Carsten H. (T. R. <ra...@ra...>]

On Sat, 30 Apr 2011 09:22:02 +0200 Atton Jonathan <jon...@gm...>
said:

david's point is.. that he doesnt want to use a network connection at all off
the device. every thing local. so you'd need to make a locally installed osm.

> osm does all this no ? maybe we do not need to write it. But it will a
> request a big storage for tiles.
> 
> 2011/4/30 Carsten Haitzler <ra...@ra...>
> 
> > On Sat, 30 Apr 2011 08:56:11 +1000 David Seikel <on...@gm...> said:
> >
> > > On Sat, 30 Apr 2011 02:12:49 +0900 sangho park <gou...@gm...>
> > > wrote:
> > >
> > > > as basic concept, route information can be acquired by service, not
> > > > local data.
> > > > we can extend route for shortest path using local backing store, but
> > > > it's just option.
> > > > yes..yes.. it'll be very good feature that uses local map and route
> > > > data, but we should overcome so many license issues.
> > >
> > > Personally I think it's absolutely critical to be able to do local
> > > routing.  That's my main use case, navigating out in the wild when I
> > > have no data connection.  "Semi manual" routing is OK, that's even
> > > a desired feature.  Pick out a few waypoints, draw some route
> > > segments, tell it to follow this road or river from waypoint C to
> > > waypoint D, but keep the A to B to C and D to E segments...
> > >
> > > Perhaps, if we have to, precalculate route segments when there is a data
> > > connection, store them; then manipulate them later, adding or removing
> > > them to a particular route.
> > >
> > > /me does not want to be stuck out in the middle of nowhere with no
> > > routing ability.
> >
> > to me this all seems like it would be best done as client-server locally
> > too.
> > unlike remote map server, it has 1 shortcut - you don't DOWNLOAD map tiles.
> > you
> > are directly pointed to the file. this way routing can be offloaded to the
> > local mapserver (and calculating a route can take a long time, and need a
> > lot
> > of route data, so this makes sense). all the abstraction needs is the short
> > cut
> > ability for tiles.
> >
> > someone still then has to write that local server and routing engine :) do
> > you
> > want to? :) (a local tile server would be trivial, but routing... that's
> > another matter as technically it may not be that hard as its just solving a
> > graph, the problem is having the right graph data with the right weighting,
> > and
> > then a whole tonne of "fuzzy logic" thrown in to cover up "odd solutions"
> > that
> > may come out of the graph that a human would never make).
> >
> > --
> > ------------- Codito, ergo sum - "I code, therefore I am" --------------
> > The Rasterman (Carsten Haitzler)    ra...@ra...
> >
> >
> >
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> 
> 
> 
> -- 
> Regards.


-- 
------------- Codito, ergo sum - "I code, therefore I am" --------------
The Rasterman (Carsten Haitzler)    ra...@ra...