[mkgmap-dev] Problem with --adjust-turn-headings

Mon Feb 8 21:03:02 GMT 2010

Hi Mark,

I think I have an example where this is useful. On a ~200km drive I got one
keep left announcement where there was only a normal exit from the motorway.

Before blindly adding this relation  I want to understand how the current
algorithm should work. maybe I should fix the osm data first
you mention mkgmap looks at ways, ref, names. can you explain how it's done?

btw it's much better than my old tomtom which announces keep left on too
many exits.

thanks
Apollinaris

On Fri, Feb 5, 2010 at 9:54 AM, Mark Burton <markb at ordern.com> wrote:

>
> Hi Steve,
>
> > Sounds great - I'll look forward to it.
>
> Good, I will work on it this evening and I don't expect it to be a big
> job.
>
> We need to document the through_route relation on the wiki. I'm not
> up to speed with wikis, can you (or anyone else) please write a few
> words to describe what it is and where it should be used?
>
> At this time, I expect it to have 2 ways + 1 node (role = junction).
> The relation type is "through_route". Its purpose is to advise routing
> software which pair of ways make up the through route at a
> junction when that cannot be reliably inferred from the ways'
> refs and/or names. It should be used only for those junctions that
> really require it.
>
> Cheers,
>
> Mark
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>
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