[Talk-ca] Sinking islands...

[G. Michael Carter]

  I've been taking all three objects and merging them.  So the inner is 
natural=wood, with name.

http://www.openstreetmap.org/?lat=45.45968&lon=-80.42647&zoom=16&layers=M <http://www.openstreetmap.org/?lat=45.45968&lon=-80.42647&zoom=16&layers=M>


Seems to be rendering ok.   Childs and Osawa are examples.

On 23/09/10 10:38 AM, Bégin, Daniel wrote:
> You are right :-(
> Two solutions are possible for the next release...
> - Convert natural=land area into point feature - the easy solution to 
> always keep the name available;
> - Associate the name to the inner component - If it renders properly.
> The second one is much more complex (from my side). Can someone try it 
> and send me the conclusion?
> Daniel
>
> ------------------------------------------------------------------------
> *From:* G. Michael Carter [mailto:mikeycarter1974 at gmail.com] *On 
> Behalf Of *G. Michael Carter
> *Sent:* September 23, 2010 10:14
> *To:* Bégin, Daniel
> *Cc:* Talk-CA OpenStreetMap
> *Subject:* Re: [Talk-ca] Sinking islands...
>
> I notice for islands with names the name tag is on the natural=land.
>
> On 23/09/10 10:00 AM, Bégin, Daniel wrote:
>> Bonjour Michael,
>>
>> 2010-08-16 11:54 [Talk-ca] Canvec.osm Product - Running!
>> I wrote  "natural=land  area features are a duplicate of natural=water inner polygon. It will be removed for the next release.  Point features will still be there."
>>
>> I understand that natural=land has priority in the rendering. Rendering will then "move" any overlapping features "under" the natural=land feature. It means you are better remove natural=land area before importing.
>>
>> The standard case for an island is
>> - an inner component of a relation type=multipolygon : natural=water
>> - a polygon : natural=land
>> - a polygon : natural=wood
>>
>> Remove the polygon natural=land and the polygon natural=wood will render properly  in the hole created by the inner component of the natural=water multipolygon.
>>
>> Daniel
>>
>> -----Original Message-----
>> From:talk-ca-bounces at openstreetmap.org  [mailto:talk-ca-bounces at openstreetmap.org] On Behalf Of G. Michael Carter
>> Sent: September 23, 2010 09:09
>> To: Talk-CA OpenStreetMap;talk-us at openstreetmap.org
>> Subject: [Talk-ca] Sinking islands...
>>
>>
>>    I was importing data in the Georgian Bay area and I noticed
>> something.   If an island is natural=land it renders in mapnik as white,
>> regardless of the outer multipolygon.   if you have natrual=wood or
>> possibly others, it sinks if it's not role=inner.
>>
>> This is at least what I've observed so far.   It's rather hard to figure
>> out when the mapnik tiles get cached and don't refresh in a timely fashion. :-)
>>
>>
>>
>>
>>
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