[mkgmap-dev] [PATCH] --ignore-builtin-relations

Sun Apr 17 09:21:41 BST 2011

On Sun, Apr 17, 2011 at 09:04:18AM +0200, Josef Latt wrote:
>Am 16.04.2011 17:10, schrieb Josef Latt:
>>Or, a member of a relation is a highway and the relation itself has 
>>tag highway=.. both ways lie upon each other. Maybe there can be 
>>solution in the styles. But this is to high for me.
>
>Example for the above und BTW I don't understand the scope of such 
>constructs.
>http://www.openstreetmap.org/?lat=50.5721489&lon=7.2946530&zoom=18

I downloaded this in JOSM. The landuse=residential multipolygon 
http://www.openstreetmap.org/browse/relation/1535811 looks incorrect.

I guess that you are referring to the highway=pedestrian multipolygon on 
the west. Its west border is a way that has highway=service. Pedestrian 
areas are a normal thing to have, but I would not use highways as area 
borders. The highway line should be drawn on the centerline of way, and 
I would expect the pedestrian plaza to be separated from the centerline 
of the highway=service in some way. Either the highway=service way is 
completely inside the highway=pedestrian area, or the highway=service 
way should be completely outside the pedestrian area.

In other words, this looks like bad mapping. If you feed this to any 
software, you can expect GIGO (garbage in, garbage out).

	Marko