Re: [OSM-talk] Route calculation on tracks Was: Dirt Roads in Mapnik, default render in OSM

2013-08-25 Thread Florian Lohoff
On Sat, Aug 24, 2013 at 09:37:50AM +0100, SomeoneElse wrote:
 Florian Lohoff wrote:
 ANY road should be used for routing - track/service do have an
 implicit access=destination and should not used for through
 traffic but have no route restrictions otherwise
 
 That may be the case where you live but I wouldn't make that
 assumption worldwide.  I certainly wouldn't assume that a track in
 England without any access or designation tags was publically
 accessible.
 
 Routers have a difficult job to do of balancing physical and legal
 restrictions - there isn't a one size fits all answer.  It's more
 of a problem for OSM because commercial datasets for car satnavs
 tend not to include the wealth of paths and tracks in OSM in
 well-mapped areas.

Still - a track may be usable to reach a destination. For routers they
may appear at the end or the start of a route e.g. access=destination
any may not be used for through traffic.

Mapfactor Navigator for Android is capable of exactly doing this - why
arent the others?

Flo
-- 
Florian Lohoff f...@zz.de


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Re: [OSM-talk] Route calculation on tracks Was: Dirt Roads in Mapnik, default render in OSM

2013-08-25 Thread Gmail


Florian Lohoff :
Mapfactor Navigator for Android is capable of exactly doing this - why
arent the others?

This is something you probably have to ask them.


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Re: [OSM-talk] Route calculation on tracks Was: Dirt Roads in Mapnik, default render in OSM

2013-08-24 Thread SomeoneElse

Florian Lohoff wrote:
ANY road should be used for routing - track/service do have an 
implicit access=destination and should not used for through traffic 
but have no route restrictions otherwise


That may be the case where you live but I wouldn't make that assumption 
worldwide.  I certainly wouldn't assume that a track in England without 
any access or designation tags was publically accessible.


Routers have a difficult job to do of balancing physical and legal 
restrictions - there isn't a one size fits all answer.  It's more of a 
problem for OSM because commercial datasets for car satnavs tend not to 
include the wealth of paths and tracks in OSM in well-mapped areas.


Cheers,

Andy


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