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#1 2020-04-26 18:20:14

vmicho
Member
Registered: 2020-04-26
Posts: 3

Incorrect rendering of overlapping green areas (on default OSM web)?

Hello.
I see a weird rendering problem: scrub is rendered correctly, or incorrectly "under" another green area with just the bushes drawn over it. In this case a big scrub is drawn under a meadow and over a grassland. There are 2 other smaller scrubs visible and drawn over everything as expected (those I've added more recently).
Is this a bug?
Is there some kind of hidden layers position?

rendering: https://imgur.com/cGidlai
source: https://imgur.com/DSRCw45

url (if still there): https://www.openstreetmap.org/#map=18/52.10670/9.94615

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#2 2020-04-27 09:08:51

Hartmut Holzgraefe
Member
Registered: 2015-04-13
Posts: 209

Re: Incorrect rendering of overlapping green areas (on default OSM web)?

There's indeed an overlap of a scrub and a meadow polygon, and at least
one of them seems to get rendered semi-transparently, or with some other
comp-op that combines the two fill patterns:

https://www.openstreetmap.org/way/30426 … 09/9.94846

and

https://www.openstreetmap.org/way/16174 … 09/9.94846

Last edited by Hartmut Holzgraefe (2020-04-27 09:09:34)

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#3 2020-04-27 13:32:34

vmicho
Member
Registered: 2020-04-26
Posts: 3

Re: Incorrect rendering of overlapping green areas (on default OSM web)?

Yes it is. But some other scrubs (the smaller ones at top left) are rendered OK.
And I'd expect scrub/forest is always rendered above grass/meadow (and that mostly works)

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#4 2020-04-28 18:32:12

Tordanik
Moderator
From: Germany
Registered: 2008-06-17
Posts: 2,698
Website

Re: Incorrect rendering of overlapping green areas (on default OSM web)?

Hm, can a meadow and scrub/forest occupy the same location? I'm not sure about the exact definition of the tags. But if the mapping is correct, you might want to report this as an issue with openstreetmap-carto, the style definition that is used for the standard map layer on osm.org.


OSM in 3D: OSM2World

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#5 2020-05-13 08:10:56

vmicho
Member
Registered: 2020-04-26
Posts: 3

Re: Incorrect rendering of overlapping green areas (on default OSM web)?

Tordanik wrote:

Hm, can a meadow and scrub/forest occupy the same location? I'm not sure about the exact definition of the tags. But if the mapping is correct, you might want to report this as an issue with openstreetmap-carto, the style definition that is used for the standard map layer on osm.org.

I think it's logical they can occupy the same place.
I'll report that wink

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