Hi Gerd, Andrzej I've done a bit more experimenting with Basecamp. Starting from a fixed point on a main roundabout on the mainland, I've been creating routes to a Primary road on the Island, working along this road until it fails to use the ferry and resorts to a straight line. Using GPSMapEdit to look at the road segments, positions of routing nodes and other properties, it appears to work on one side of a routing node but not the other on a single line segment. Ticker On Tue, 2018-03-13 at 14:46 +0000, Gerd Petermann wrote:
Hi Ticker,
I think what Andrzej wants to point out is that Garmins routing algo is quite special. When looking for a possible route it tries to reach a road with a high class. Once this is found it will ignore roads with lower class if this is the only connection to the ferry (which also should be a high class, default style uses 3). I think this search is done from start and target. So, if a class=3 road takes you close to the ferry terminal but not onto the ferry you might see these problems when your route includes the class=3 road. I wonder if this also happens for pedestrian routing, but for cars I've often seen that.
Gerd
________________________________________ Von: mkgmap-dev <mkgmap-dev-bounces@lists.mkgmap.org.uk> im Auftrag von Ticker Berkin <ticker@jagIT.co.uk> Gesendet: Dienstag, 13. März 2018 15:09:50 An: mkgmap-dev@lists.mkgmap.org.uk Betreff: Re: [mkgmap-dev] Route Calculation Error and Ferries
Hi Andrzej
No - I checked all of this. A couple of ferries wouldn't route to/from the public highway network because of this (access=destination), but one didn't have this tagging on its service roads and Basecamp would route using the ferry as long as the start and end points (on public roads) were close to the ferry terminals, but trying to start/end further away, still on connected public roads, it wouldn't route.
Ticker
On Tue, 2018-03-13 at 14:11 +0100, Andrzej Popowski wrote:
Hi Ticker,
as long as the start and/or end points are only a few streets away from the ferry termini
This could be because of service roads leading to a ferry. That kind of roads are the last resort for a route and usually at the endpoint only. They are probably ignored, when calculating longer route for a car.
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