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#1 2019-02-03 19:56:53

peter_james
Member
Registered: 2012-10-09
Posts: 2

Finding the data used in a tile

Some tiles show things not visible in the data layer. For example, https://tile.openstreetmap.org/17/64986/41952.png which should be empty but contains a boundary. How can the data used in a tile be found?

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#2 2019-02-03 23:26:33

SomeoneElse
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Registered: 2010-10-13
Posts: 1,022

Re: Finding the data used in a tile

Where is that?

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#3 2019-02-04 19:26:46

Mecki
Member
Registered: 2011-08-01
Posts: 126

Re: Finding the data used in a tile

You have to have the edges of the boundary in your data layer. The way itself won't be shown without any nodes. Because the way is created based on the nodes and is not a physical object.

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#4 2019-02-05 00:04:49

FvGordon
Member
Registered: 2009-08-29
Posts: 665

Re: Finding the data used in a tile

It is the nearly horizontal boundary on this part of the map: https://www.openstreetmap.org/#map=15/54.2137/-1.5146.
This boundary segment is not shown in JOSM.

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#5 2019-02-05 08:46:29

wambacher
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From: Schlangenbad/Wambach, Germany
Registered: 2009-12-16
Posts: 15,906
Website

Re: Finding the data used in a tile

There a more "phantom boundaries" like that:

https://www.openstreetmap.org/#map=14/46.8968/29.4713

and https://www.openstreetmap.org/changeset/66852676

May be the render database needs a full reload?

Regards
walter

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#6 2019-02-05 17:02:36

SomeoneElse
Member
Registered: 2010-10-13
Posts: 1,022

Re: Finding the data used in a tile

wambacher wrote:

May be the render database needs a full reload?

That might not work in this case.  The same artefact appears at https://map.atownsend.org.uk/maps/map/m … n=-1.51015 if you turn the boundaries overlay on - see e.g. https://map.atownsend.org.uk/hot2/15/16247/10488.png

That boundaries layer was done as a one-off import of "europe_2018-11-23T21:14:02Z.osm.pbf" on 25th November, just before I wrote https://www.openstreetmap.org/user/SomeoneElse/diary .  Using overpass I can't find any historic way on that alignment.

Last edited by SomeoneElse (2019-02-05 17:03:10)

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#7 2019-02-05 20:07:05

Mecki
Member
Registered: 2011-08-01
Posts: 126

Re: Finding the data used in a tile

Seems to be a renderer issue. ÖPNV map does not show a border here: https://www.öpnvkarte.de/#-1.5026;54.215;14

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