[mkgmap-dev] Commit r4715: rework of options for reverse merge

Sat May 15 19:18:49 BST 2021

Hi Ticker,

that means that styles which don't render direction have to be changed to get the smallest IMG files. Where would you add the mkgmap:has-direction=no in the default style?

Gerd

________________________________________
Von: mkgmap-dev <mkgmap-dev-bounces at lists.mkgmap.org.uk> im Auftrag von Ticker Berkin <rwb-mkgmap at jagit.co.uk>
Gesendet: Samstag, 15. Mai 2021 20:08
An: Development list for mkgmap
Betreff: Re: [mkgmap-dev] Commit r4715: rework of options for reverse merge

Hi

Probably the Garmin meaning has changed over time and it is now a
display characteristic on some devices.

oneway should continue to set it. {set mkgmap:has-direction=no} should
end up with it not set (but correct routing).

My eTrex has always shown this (looking back at an old map). I'd just
never hovered over a one-way road and noticed. Maybe I'd seen something
like "M3 (N)" and just assumed the carriageway was named as such.

It is a bit of a rubbish way of showing one-way compared with putting
an arrow on the road.

Ticker

On Sat, 2021-05-15 at 17:24 +0000, Gerd Petermann wrote:
> Hi all,
>
> what about routable lines with oneway? Should this force the
> direction flag in IMG format? I found no oneway road in Garmin maps
> where the dir-flag was not set, but Tickers finding reg. the Etrex
> HCx: showing compass directions for those roads seem to say that
> there is no clear rule about the meaning of this flag.
>
> Gerd
>
> ________________________________________
> Von: mkgmap-dev <mkgmap-dev-bounces at lists.mkgmap.org.uk> im Auftrag
> von Gerd Petermann <gpetermann_muenchen at hotmail.com>
> Gesendet: Samstag, 15. Mai 2021 18:30
> An: Development list for mkgmap
> Betreff: Re: [mkgmap-dev] Commit r4715: rework of options for reverse
> merge
>
> Hi all,
>
> OK, I'll try to change the code so that oneway=* has no effect on the
> dir-flag for non-routable lines. It's a bit tricky because of the
> overlays rule file.
> At least the OFM style still uses this and I forgot what it is good
> for.
>
> Gerd
>
> ________________________________________
> Von: mkgmap-dev <mkgmap-dev-bounces at lists.mkgmap.org.uk> im Auftrag
> von Ticker Berkin <rwb-mkgmap at jagit.co.uk>
> Gesendet: Samstag, 15. Mai 2021 17:38
> An: Development list for mkgmap
> Betreff: Re: [mkgmap-dev] Commit r4715: rework of options for reverse
> merge
>
> I agree. The style can test "oneway" and set mkgmap:has-direction if
> appropriate for non-roads.
>
> Ticker
>
> On Sat, 2021-05-15 at 14:53 +0000, Gerd Petermann wrote:
> > I think the important question is if the oneway tag should be
> > evaluated for non-routable lines.
> > Felix already said no, I agree with that.
> >
> > Gerd
> >
> > ________________________________________
> > Von: mkgmap-dev <mkgmap-dev-bounces at lists.mkgmap.org.uk> im Auftrag
> > von Ticker Berkin <rwb-mkgmap at jagit.co.uk>
> > Gesendet: Samstag, 15. Mai 2021 16:04
> > An: Development list for mkgmap
> > Betreff: Re: [mkgmap-dev] Commit r4715: rework of options for
> > reverse
> > merge
> >
> > Assuming that the output device shows the direction on lines with
> > direction and doesn't on lines without:
> >
> > Another example is, say, [intermittent] water using type [0x26]
> > 0x1f.
> > stream/river will have a direction and canal/ditch won't.
> >
> > There will be others, under the control of the Style/TYP, so I
> > don't
> > think mkgmap should check/warn of this situation.
> >
> > Ticker
> >
> > On Sat, 2021-05-15 at 12:59 +0000, Gerd Petermann wrote:
> > > I only thought about non-routable lines and LineMerger. For roads
> > > it
> > > is normal to have different flags because of the oneway tag.
> > > Maybe I make too many assumptions about the possible usage of
> > > types...
> > >
> > > Gerd
> >
> > _______________________________________________
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