[mkgmap-dev] Style Manual

Thu Feb 1 10:22:02 GMT 2018

Hi all,

to be honest, I don't fully understand what mkgmap:tagsincomplete is about.
The tag is set by the OSM readers when a type=multipolygon or type=boundary relation has a tag that is NOT evaluated by the style,
this is probably the case for many of those relations. The effect is that a mp relation with a normal tag like name=* is treated the same as
one with exotic:unused:nonsense=*. The only case where this seems to matter is when a relation has only the type=mulitpolygon tag.

See this svn log message: http://www.mkgmap.org.uk/websvn/revision.php?repname=mkgmap&rev=2366
The tag is evaluated before any style processing happens and I think it makes no sense to evaluate or change it in style rules.

reg: mkgmap:stylefilter:
The tag is set in the MultipolygonRelation code. It is used to decide whether the rules in lines or in polygons should be used. 
Without the tag it is likely that both are combined (rules in lines before those in polygons).
You should not see this tag in the relations style, only in lines or polygons, as long as you don't set it in the relations 
rules. Doing this might cause trouble.
Maybe it makes sense to evaluate this tag in the lines rules, something like 
# filter highways which are parts of multipolygon relations
highway=* & mkgmap:stylefilter=lines {...} 

tl;dr:
I can document these tags as e.g. "please don't set or change"
or I can try to get rid of them. What do you think?

Gerd
________________________________________
Von: mkgmap-dev <mkgmap-dev-bounces at lists.mkgmap.org.uk> im Auftrag von Gerd Petermann <gpetermann_muenchen at hotmail.com>
Gesendet: Mittwoch, 31. Januar 2018 21:22
An: Mike Baggaley; 'Development list for mkgmap'
Betreff: Re: [mkgmap-dev] Style Manual

Hi Mike,

I'd rather change the code so that you don't see those tags. They are for internal use only.

Gerd

________________________________________
Von: mkgmap-dev <mkgmap-dev-bounces at lists.mkgmap.org.uk> im Auftrag von Mike Baggaley <mike at tvage.co.uk>
Gesendet: Mittwoch, 31. Januar 2018 20:20
An: 'Development list for mkgmap'
Betreff: [mkgmap-dev] Style Manual

I notice the style manual has no mention of mkgmap:stylefilter or
mkgmap:tagsincomplete in it. I see these in the output of the echotags
command when handling a relation. Can they be added to the documentation?

Cheers,
Mike

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