Rendering or tagging error?

The node 31290236 is part of a bridge - the road forks there.
On Mapnik rendering it looks like only one part is a bridge and the other goes somehow underneath it. This is however not true, they are connected. Looking at the data, it seems ok and MapQuest layer got the rendering right.
Still I'd like to ask if the data is really correct before filing a bug for Mapnik.

It is here, how it actually looks can by seen here

alt text

rendering mapnik bridge

asked 26 Feb '12, 21:44

LM_1
3.3k●33●51●88
accept rate: 10%

2 Answers:

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It is usually a good idea to avoid junctions of ways on different layers. One of the roads at that node is tagged as layer=1, while they other road doesn't have any layer tag. Both roads are tagged as bridge=yes, which sometimes implies layer=1, but it is usually best to tag this explicitly. So I think both roads should be tagged as layer=1.

Tools like Keep Right! can warn of these "mixed layers intersections".

Though I'm not sure if this actually affects the Mapnik rendering.

permanent link

answered 26 Feb '12, 22:49

Vclaw
9.2k●8●95●141
accept rate: 22%

Adding the layer tag helped and since it is the part that goes from one level to another is is not incorrect.

(27 Feb '12, 00:03) LM_1

1	This is a rendering error. You can submit bug descriptions and patches at trac. permanent link answered 26 Feb '12, 22:00 Gnonthgol ♦ 13.8k●16●103●198 accept rate: 16%

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Question tags:

rendering ×440
mapnik ×341
bridge ×71

question asked: 26 Feb '12, 21:44

question was seen: 3,722 times

last updated: 27 Feb '12, 00:03

Rendering or tagging error?

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