[mkgmap-dev] frig-roundabouts doesn't work

Sat Sep 28 13:16:43 BST 2013

Hi Gerd,

what is the aim of this option?
Searching for "frig" in the dictionary gives results that have nothing 
to do with roundabouts... ;-)

Is this option useful?
Up to now it is undocumented and could be removed at any time if it 
makes too much problems.

WanMil

> Hi all,
>
> while looking at the code again I found out that frig-roundabouts still
> can be used with --x-frig-roundabouts.
>
> I think the option doesn't work very well in the current implementation.
> Problems:
> 1) It assumes that a roundabout is round, this is not
> always true, as it might be elliptic
> 2) it doesn't add the points
> to any overlaying line, so I guess that this will look funny.
> 3) It assumes that a way tagged as roundabout is
> forms a loop without checking that, but some mappers split
> roundabouts:
> http://www.openstreetmap.org/browse/way/32571107
> 4) it is meant to "stop the gps from reporting the wrong exit"
> but it is called after short-arc-processing, so it cannot solve the
> problem when two exits were merged by that processing.
>
> I'll try to fix these problems as well as the other problems
> regarding the short arcs.
>
> Gerd
>
>
> GerdP wrote
>> Hi,
>>
>> The option is described in the wiki, and I find a peace of source in the
>> HighwayHook
>> that evaluates it, but it doesn't work.
>>
>> What is missing?
>>
>> Gerd
>
>
>
>
>
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