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Cayman Islands still broken (one week later)

Publicado por lwu o 19 de Agosto de 2008 en English.

The Cayman Islands are still broken, one week later.

Here's the current Mapnik render (look ma, no visible coastlines):
osm.org/?lat=19.258&lon=-81.264&zoom=11&layers=B00FTF

and the Osmarender (look ma, incorrect way directions):
osm.org/?lat=19.308&lon=-81.2&zoom=11&layers=0B0FTF

Osmarender looked fine last week (I think), but Mapnik render was still the same.
(previous diary entry, osm.org/user/lwu/diary/2810)

shadowjack merged the lines last week, apparently.

Localización: Breakers, Bodden Town, KY1-1702, Cayman Islands
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Parola

Comentario de lwu no 19 de Agosto de 2008 ás 23:38

Loaded up Cayman Island in JOSM, but the Way seems properly counter-clock. It might just be a rendering issue? Osmarender doesn't get the land/water division right in some cases.

Comentario de Deelkar no 20 de Agosto de 2008 ás 02:20

check in JOSM (with middle mousebutton) wether there is only one coastline. check further that the coastline ways are all facing counter-clockwise around land (so that water is to the right side of the way) and then check the way is indeed closed.

Comentario de Deelkar no 20 de Agosto de 2008 ás 02:28

I just checked the coastline and found it ran CW around the island, basically marking it as water in water.
I reversed it, and it should start to show up in osmarender soon-ish.

Comentario de shadowjack no 20 de Agosto de 2008 ás 12:30

Now everything should be ok. I fixed final errors (there was leftover segment(two nodes) and Sand Cay was not closed).
osm.org/?lat=19.3081&lon=-81.2716&zoom=12&layers=0B0FTF
Zoom levels <12 will be updated later.

Comentario de shadowjack no 20 de Agosto de 2008 ás 12:31

opps...
rest of the message:
Zoom levels <12 should be updated later.

Comentario de shadowjack no 20 de Agosto de 2008 ás 12:32

Hmm.. comments do not like < sign

Comentario de shadowjack no 20 de Agosto de 2008 ás 12:33

Zoom levels < 12 will be updated later.

Comentario de Deelkar no 20 de Agosto de 2008 ás 18:52

The coastline need not be a single closed way, as long as the parts of the coastline have no gaps (ie. the end node is the start node of the next way) and do not branch, and keep to the water-right-hand-rule.

Comentario de shadowjack no 20 de Agosto de 2008 ás 20:43

I agree, it need not be closed. But sequence of ways must form closed shape. Sand Cay consisted of one (unclosed) way. It's error. After it was fixed, osmarender rendered tile fine.

Comentario de lwu no 20 de Agosto de 2008 ás 23:36

I suppose it'd be nice if the error showed up in the Coastline Checker, but when I tried it last, no such luck. I suppose the Checker works for many other cases though.

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