[mkgmap-dev] What's the meaning of the 'has no region' warnings?

Wed Aug 19 08:32:49 BST 2015

Hi all,

I hesitate to commit this patch because I think that we
probably can remove the code instead of "fixing" it.

I found this in imgformat-1.0.pdf:

Highway Records, Exit Records and Highway Data Records
These records were apparently used by the old Roads and Recreation maps to describe services
available at various highway exits, rest areas and so on
In mkgmap we have code to write these records, and this code prints the "has no region" warning.

I still have no idea where the data is used. Maybe the device shows some additional
info when you drive on a motorway.
When Mark Burton committed the code with r984 he did not describe the wanted effect,
but he also seemed to be unsure about its positive effects, see here:
http://www.mkgmap.org.uk/websvn/listing.php?repname=mkgmap&rev=984

and here:
http://www.mkgmap.org.uk/pipermail/mkgmap-dev/2009q1/001293.html

I don't know if the problems regarding the basemap were solved later, but
my Oregon 600 doesn't seem to allow to search for exits at alll. Maybe I have to
enable/disable an option for this.

Does anybody know more? 

Gerd

> Date: Tue, 18 Aug 2015 21:14:49 +0200
> From: cdavilam at orangecorreo.es
> To: mkgmap-dev at lists.mkgmap.org.uk
> Subject: Re: [mkgmap-dev] What's the meaning of the 'has no region' warnings?
> 
> Regarding your patch I just can say that it zaps the warnings. I don't 
> have any idea of other effects it may have either.
> 
> El 13/08/15 a las 07:29, Gerd Petermann escribió:
> > Hi Steve,
> >
> > attached is a patch to use the nodes' region.
> > Please check: If I got that right, mkgmap collects and writes
> > the exists for each highway, so I wonder what should happen
> > when the input file contains two different highways
> > with the same ref (maybe A1).
> >
> > I have no idea where the highway/exit info is used, so
> > I don't know how to test the effect.
> >
> > Gerd
> >
> > > To: mkgmap-dev at lists.mkgmap.org.uk
> > > From: steve at parabola.me.uk
> > > Date: Wed, 12 Aug 2015 23:08:26 +0100
> > > Subject: Re: [mkgmap-dev] What's the meaning of the 'has no region' 
> > warnings?
> > >
> > >
> > > Hi Gerd
> > >
> > > > @Steve: The code was introduced with r984 and it used the default
> > > > region to create a label instead of first checking the nodes' region
> > > > attribute.
> > > > I don't understand that.
> > >
> > > This was before the bounds file, and I would think that there would
> > > have been close to zero chance that any exit nodes would have
> > > had a region tag in OSM at that time.
> > >
> > > So I guess it was just not important at the time. I certainly don't
> > > recall any reason for it.
> > >
> > > ..Steve
> 
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