Re: [OSM-talk] Fwd: 2 Great Lakes missing

[Christoph Hormann]

On Monday 13 August 2018, SelfishSeahorse wrote:
>
> Thanks for the tip; I din't think of it. Actually my computer had
> more difficulties to calculate that i had to find the errors. :-)

Note checking this kind of errors on large multipolygons is not really 
that difficult.  For each of the big lakes that is a few dozen MB of 
download via overpass API and then a few seconds with osmium to 
assemble the multipolygon.  You can easily set this up to run on a 
daily basis to check a few lakes you want to keep an eye on.

-- 
Christoph Hormann
http://www.imagico.de/

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Re: [OSM-talk] Fwd: 2 Great Lakes missing

[James]

Yeah those great "lakes" are such a massive relations... I think I can make
toast on my computer while it's calculating the errors. Thanks for fixing
it Selfish Seahorse

On Mon., Aug. 13, 2018, 9:12 a.m. SelfishSeahorse, <
selfishseaho...@gmail.com> wrote:

> On Mon, 13 Aug 2018 at 14:01, Christoph Hormann  wrote:
> >
> >
> > Note you can easily check if there are broken multipolygons in the OSM
> > inspector:
> >
> >
> http://tools.geofabrik.de/osmi/?view=areas=-84.14378=46.10509=8
> >
> > If a lake multipolygon is broken the lake outline will be shown as
> > context there and the location of the error usually in red (self
> > interaection) or magenta (ring not closed).
>
> Thanks for the tip; I din't think of it. Actually my computer had more
> difficulties to calculate that i had to find the errors. :-)
>
> Regards
> Markus
>
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Re: [OSM-talk] Fwd: 2 Great Lakes missing

[SelfishSeahorse]

On Mon, 13 Aug 2018 at 14:01, Christoph Hormann  wrote:
>
>
> Note you can easily check if there are broken multipolygons in the OSM
> inspector:
>
> http://tools.geofabrik.de/osmi/?view=areas=-84.14378=46.10509=8
>
> If a lake multipolygon is broken the lake outline will be shown as
> context there and the location of the error usually in red (self
> interaection) or magenta (ring not closed).

Thanks for the tip; I din't think of it. Actually my computer had more
difficulties to calculate that i had to find the errors. :-)

Regards
Markus

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Re: [OSM-talk] Fwd: 2 Great Lakes missing

[SelfishSeahorse]

Hi!

On Mon, 13 Aug 2018 at 13:50, Tom Hughes  wrote:
>
> You should see the changes at z13+ but z0-12 are only rendered once a
> month or when the style changes.

Thanks for your explanation. This also explains why it was not noticed
that the lakes had disappeared until about a month after the faulty
edits at Lake Huron.

Regards
Markus

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Re: [OSM-talk] Fwd: 2 Great Lakes missing

[Christoph Hormann]

Note you can easily check if there are broken multipolygons in the OSM 
inspector:

http://tools.geofabrik.de/osmi/?view=areas=-84.14378=46.10509=8

If a lake multipolygon is broken the lake outline will be shown as 
context there and the location of the error usually in red (self 
interaection) or magenta (ring not closed).

-- 
Christoph Hormann
http://www.imagico.de/

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Re: [OSM-talk] Fwd: 2 Great Lakes missing

[Tom Hughes]

You should see the changes at z13+ but z0-12 are only rendered once a
month or when the style changes.

Tom

On 13/08/18 12:36, SelfishSeahorse wrote:

Apparently I sent the message only to James ... So here it is for the
rest of you. eanwhile the lakes are rendered):

-- Forwarded message -

Hi

There were quite a few problems with these multipolygons (overlapping
and unclosed ways, no role, inner ways belonging to wrong
multipolygon), which i've just fixed:




The multipolygons should be okay now – at least JOSM and i couldn't
find any more problems. :-) However they still don't render ... Could
it be that this is has to do with these server issues:

?

Regards

Markus

On Fri, 10 Aug 2018 at 02:25, James  wrote:


someone probably broke them again... happens quite often sadly...

On Thu., Aug. 9, 2018, 9:05 p.m. Daniel Koć,  wrote:


Hi,

Is anybody aware what happened to Lake Superior and Lake Huron?

https://www.openstreetmap.org/relation/4039486

https://www.openstreetmap.org/relation/1205151


They were changed 20 and 3 days ago, respectively, and they stopped
being rendered both on default and on humanitarian map.


--
"My method is uncertain/ It's a mess but it's working" [F. Apple]


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Tom Hughes (t...@compton.nu)
http://compton.nu/

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[OSM-talk] Fwd: 2 Great Lakes missing

[SelfishSeahorse]

Apparently I sent the message only to James ... So here it is for the
rest of you. eanwhile the lakes are rendered):

-- Forwarded message -

Hi

There were quite a few problems with these multipolygons (overlapping
and unclosed ways, no role, inner ways belonging to wrong
multipolygon), which i've just fixed:




The multipolygons should be okay now – at least JOSM and i couldn't
find any more problems. :-) However they still don't render ... Could
it be that this is has to do with these server issues:

?

Regards

Markus

On Fri, 10 Aug 2018 at 02:25, James  wrote:
>
> someone probably broke them again... happens quite often sadly...
>
> On Thu., Aug. 9, 2018, 9:05 p.m. Daniel Koć,  wrote:
>>
>> Hi,
>>
>> Is anybody aware what happened to Lake Superior and Lake Huron?
>>
>> https://www.openstreetmap.org/relation/4039486
>>
>> https://www.openstreetmap.org/relation/1205151
>>
>>
>> They were changed 20 and 3 days ago, respectively, and they stopped
>> being rendered both on default and on humanitarian map.
>>
>>
>> --
>> "My method is uncertain/ It's a mess but it's working" [F. Apple]

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