[mkgmap-dev] option link-pois-to-ways information

Thu Feb 17 09:59:24 GMT 2022

Hi Gerd

My problem is relating to car routing and highway=service where no
explicit access is specified, 

For driveways I set access=private.

For others, it is debatable as to what to do:
1/ Nothing.
   This can allow routing through somewhere entirely inappropriate.
2/ Always set access=destination.
   This will stop through routing that could be allowed/efficient.
3/ only set access=destination if there seems to be a barrier.

Any of these can still lead to the problem with new Garmin routing algo
using a footpath, but 2/ makes it more likely to happen. Where the
destination is truly in the service area it is easy to check the last
steps of the chosen route to detect this problem.

My later logic transforms the access into combinations of
   mkgmap:foot/car/...=yes/no
   mkgmap:throughroute=yes/no

Ticker

On Thu, 2022-02-17 at 08:28 +0000, Gerd Petermann wrote:
> Hi Ticker,
> 
> I don't see a problem with the patch, but I also don't see how it
> solves a problem
> with wrong routing.
> 
> Please give me some examples for highways where this would help.
> 
> Gerd
> 
> 
> 
> ________________________________________
> Von: mkgmap-dev <mkgmap-dev-bounces at lists.mkgmap.org.uk> im Auftrag
> von Ticker Berkin <rwb-mkgmap at jagit.co.uk>
> Gesendet: Mittwoch, 16. Februar 2022 17:58
> An: Development list for mkgmap
> Betreff: Re: [mkgmap-dev] option link-pois-to-ways information
> 
> Hi Gerd
> 
> Attached a patch to create 2 mkgmap: variables when --link-pois-to-
> ways
> operates.
> 
> mkgmap:poi-barrier is a list of the distinct POI barrier= tags on the
> way, so it will have values like:
>   mkgmap:poi-barrier=gate;bollard
> 
> mkgmap:poi-highway is similar but a list of the highway= tags, eg:
>   mkgmap:poi-highway=mini_roundabout;crossing
> 
> These can be tested eg:
>   highway=service & access!=* & mkgmap:poi-barrier=* &
>      mkgmap:poi-barrier~".*(yes|barrier|gate|bollard|block).*"
>        {set access=destination}
> 
> If you are happy with this I'll update the Style Manual.
> 
> Ticker