[mkgmap-dev] Exits / Service areas improvement

Sat Jun 13 13:29:16 BST 2020

Hi Gerd

I don't think Basecamp knows about the extra features of Exits either.
GPSMapEdit shows the extra details but doesn't have the find
functionality. I'm just getting MapSource going to see what it makes of
them.

It occurs to me that my HCx prefers the in-built Basemap because mkgmap
doesn't generate any MDR sections for the Highways and Exits but I
haven't been able to find any references to MDR sections that might do
the job.

I'll experiment with MapSource and see if it generates extra MDRs.

Ticker

On Sat, 2020-06-13 at 06:16 +0000, Gerd Petermann wrote:
> Hi Ticker,
> 
> thanks, I've committed the patch with r4526. I did not test the
> effects of the patch because I don't have a device which cares about
> exits and I don't know what to look for in Basecamp.
> 
> Gerd
> 
> ________________________________________
> Von: mkgmap-dev <mkgmap-dev-bounces at lists.mkgmap.org.uk> im Auftrag
> von Ticker Berkin <rwb-mkgmap at jagit.co.uk>
> Gesendet: Donnerstag, 11. Juni 2020 17:44
> An: Development list for mkgmap
> Betreff: Re: [mkgmap-dev] Exits / Service areas improvement
> 
> Hi Gerd
> 
> I looked through LinkDestinationHook early on and concluded that all
> of
> the info needed was almost gathered by HighwayHook and just needed to
> include a few more tag values. Later, when I generalized it a bit
> more,
> there were more similarities, but it still seemed better to confine
> it
> to HighwayHooks.
> 
> Ticker
> 
> On Thu, 2020-06-11 at 12:41 +0000, Gerd Petermann wrote:
> > Hi Ticker,
> > 
> > did not try it yet. I wonder why the code for the --process-exits
> > (LinkDestinationHook) is not changed by your patch.
> > 
> > Gerd
> > 
> > ________________________________________
> > Von: mkgmap-dev <mkgmap-dev-bounces at lists.mkgmap.org.uk> im Auftrag
> > von Ticker Berkin <rwb-mkgmap at jagit.co.uk>
> > Gesendet: Donnerstag, 11. Juni 2020 14:27
> > An: mkgmap development
> > Betreff: [mkgmap-dev] Exits / Service areas improvement
> > 
> > Hi
> > 
> > I've made some improvements to "Exits" handling.
> > 
> > The existing logic looked for tags:
> >  exit:road_ref - the highway the exit/services is on
> >  exit:to - the destination for the exit
> >  exit:facilities - what is available at the services
> > 
> > These don't exist in OSM data. There is some processing in mkgmap
> > to
> > set exit:road_ref in simple circumstances. Without this being set,
> > Exits don't work.
> > 
> > Changes in this patch:
> > 
> > - set exit:road_ref for highway=rest_area as well as
> > motorway_junction
> > and services.
> > 
> > - do the above for motorroad, trunk and primary highways as well as
> > motorways.
> > 
> > - for services and rest_area, if option --link-pois-to-ways is set,
> > handle "Ways" in a similar manner to "Nodes".
> > 
> > - allow the point/area in above to be slightly off the road.
> > 
> > - improve the efficiency of the setting of exit:road_ref for
> > motorway_junction.
> > 
> > - Change the typCode of motorway junction from 0x2100 (Exit with
> > Services) to 0x2000 (Exit without Services) and only do if
> > exit:road_ref is set. Also attempt to set exit:to from standard OSM
> > tags exit_to or destination.
> > 
> > - Change the typCode of services from 0x210f (see above) to 0x230f
> > (Exit Service Area), do even of generated from polygon, set some
> > facilities and show at a lower resolution.
> > 
> > - correct the allowable ranges of the different POI subtypes.
> > 
> > My eTrex HCx supports "Find > Exits" and shows the facility
> > details.
> > However the "Select Map" option for this defaults to "Use Best
> > Maps"
> > and this always chooses the inbuilt Basemap, even when disabled.
> > Selecting the mkgmap generated map shows the junctions and services
> > along the major road that the cursor is nearest. Stupidly, the map
> > selection lists the tiles rather than the complete map, naming each
> > tile as the --series-name, which is the same for all of them!
> > 
> > There are stupidities with most aspect of Exits definitions and
> > device
> > handling of it and I can see why support seems to have been dropped
> > on
> > more modern devices, but maybe it works better on other devices,
> > specifically car navigation systems.
> > 
> > Ticker
> > _______________________________________________
> > mkgmap-dev mailing list
> > mkgmap-dev at lists.mkgmap.org.uk
> > http://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev
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