[Talk-us] Trouble with getting Superior National Forest boundary to render on standard map

[Joseph Eisenberg]

I believe there might be an issue with these complex multipolygons which is
preventing osm2pgsql from handling them. Perhaps it is because nodes are
shared between two outer rings?

However, I also want to note that it is not clear to me that the new
mapping is correct.

The new outer boundaries for the Superior National Forest are very complex
and only cover a small portion of the land within the National Forest outer
boundary:

https://www.openstreetmap.org/relation/11558095

Compare the official National Forest web map:
https://usfs.maps.arcgis.com/apps/webappviewer/index.html?id=03a17ac9df1a4cd0bcc872ac996e7231
- this matches the older, simpler boundary that was in OpenStreetMap
previously. Also see this map on the Forest website:
https://www.fs.usda.gov/Internet/FSE_MEDIA/stelprdb5130373.pdf

It appears that the new, complex relation is attempting to map what land is
owned by the Federal government, rather than mapping the legal boundary of
the National Forest. Is that correct?

I believe this is a misinterpretation of the meaning of
boundary=protected_area.

See images at
https://github.com/gravitystorm/openstreetmap-carto/issues/4198#issuecomment-684084296
for another example with the Manistee National Forest, which used to be
mapped in a much simpler fashion and now has been re-made as many smaller
parcels.

- Joseph Eisenberg

On Sun, Aug 30, 2020 at 4:22 PM Clifford Snow <clifford at snowandsnow.us>
wrote:

> Paul,
> I don't have a definitive answer for you, but rendering usually takes a
> while for large areas. I would expect it to render when zoomed in but
> wasn't able to see any rendering on a couple of spot checks. I did notice
> that around islands either the forest or the island, are shifted. I would
> recommend cleaning those up.
>
> Clifford
>
> On Sun, Aug 30, 2020 at 1:19 PM Paul White <pjwhite1010 at gmail.com> wrote:
>
>> Hello,
>>
>> I recently added the (super complicated) Superior National Forest
>> boundary to OSM, because I noticed it was missing. However, it refuses to
>> render on the standard map, even though I ran it through JOSM's validator
>> with no problems. (link to relation)
>> <https://www.openstreetmap.org/relation/11558095#map=6/48.422/-92.439> I
>> don't think it's due to the amount of members, because the Tongass National
>> Forest I added recently, with over 10,000 members, renders fine. And I know
>> it's not due to the tags on the relation; they are standard to other
>> national forests.
>>
>> If someone could look into it and see what's causing it to break, that
>> would be great.
>>
>> pj
>>
>>
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>
>
> --
> @osm_washington
> www.snowandsnow.us
> OpenStreetMap: Maps with a human touch
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