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#1 2019-09-04 17:28:52

Spiekerooger
Member
Registered: 2019-07-09
Posts: 9

Aegean Sea defined as glacier or what is going on here?

It appears as if the aegean sea (or part of those) is rendered as a glacier on the openstreetmap standard style.

See: https://www.openstreetmap.org/#map=15/37.8583/23.7553 or zoom in and out here: https://www.openstreetmap.org/#map=15/37.6888/26.9456 , the purple color looks much like the glacier definition in https://github.com/gravitystorm/openstr … /water.mss and i see this color everywhere popping up between athens and rhodes (on newly renderd tiles on the standard style at openstreetmap.org).

So I tried to find the definitions for this relation (#4594226) in iD, where i don't find a tag like glacier or the like, it is tagged as sea (as it should).

So where else should I look to find out where the glacier here comes from?

Or what else is the reason for this aegean sea to get the wrong colors?

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#2 2019-09-04 17:41:38

kocio
Administrator
From: Warszawa
Registered: 2013-09-04
Posts: 3,307
Website

Re: Aegean Sea defined as glacier or what is going on here?

Could you make a screnshots of precisely this element, so we can actually see what do you mean? I don't get what the problem is just by staring at the map.

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#3 2019-09-04 17:49:31

Spiekerooger
Member
Registered: 2019-07-09
Posts: 9

Re: Aegean Sea defined as glacier or what is going on here?

Screenshot-2019-09-04-Open-Street-Map.png

The screenshot shows different water tiles - the purplish ones look like glaciers by color, the other ones (turqoise like) look right.

This is happening a lot if you zoom in and out in different areas of the aegean sea.

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#4 2019-09-04 17:56:00

TZorn
Member
From: Leverkusen
Registered: 2015-06-02
Posts: 693

Re: Aegean Sea defined as glacier or what is going on here?

That appears to be some rendering glitch. For whatever reason ocean has been rendered grayish on these tiles. The next time they are rendered they revert to blueish. Some of the tiles have already changed in the meantime. Try reloading the map without cache (ctrl+F5 often).

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#5 2019-09-04 18:41:12

Spiekerooger
Member
Registered: 2019-07-09
Posts: 9

Re: Aegean Sea defined as glacier or what is going on here?

So if it is a rendering glitch it is not data related, so I won't have to search for a glacier smile

But then it would be interesting to find out why the rendering glitch happens (as it sounds like a bug to be found somewhere on the rendering toolchain) and why it only happens in the aegean? I've tried other ocean and sea bodies and can only replicate it in the aegean but I've seen similar glitches before in rivers, lakes and streams (not sure if this is related or a different rendering glitch).

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#6 2019-09-04 23:12:03

SomeoneElse
Member
Registered: 2010-10-13
Posts: 1,223

Re: Aegean Sea defined as glacier or what is going on here?

There are two nearby "water relations" - https://www.openstreetmap.org/relation/9135811 and https://www.openstreetmap.org/relation/4594226 (the latter of which was edited yesterday).  Maybe one of those has just been broken or just fixed?  Certainly the Aegean sea looks like a bit of a "work in progress" - not all the islands that I'd expect to be inners currently are.

Last edited by SomeoneElse (2019-09-04 23:12:15)

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#7 2019-09-09 14:25:09

Spiekerooger
Member
Registered: 2019-07-09
Posts: 9

Re: Aegean Sea defined as glacier or what is going on here?

It seems as if on new tile renderings the problem or glitch is gone but as if the false renderings do not get updated.

I tried to OSM inspector tool to find any problems with coastlines, but to no avail.

Today I found this: https://www.openstreetmap.org/#map=15/37.6293/26.7955

Screenshot:

Screenshot-2019-09-09-Open-Street-Map.png

Could this islands coastline be related to that glitch?



(network analysis shows kalessin as cdn cache and odin as renderer).

Last edited by Spiekerooger (2019-09-09 14:28:24)

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