[Talk-GB] Coastline bleeding (again)

SomeoneElse lists at atownsend.org.uk
Tue May 19 13:24:19 UTC 2015


On 19/05/2015 12:13, Dave F. wrote:
> Hi
>
> For the past few weeks I've been getting random blue fill at high zoom 
> levels. Is this caused by the coastline being broken again?

When it happens, right-click the browser and "view image".  You'll get a 
URL something like:

http://c.tile.openstreetmap.org/14/8126/5331.png

Adding /status to the end shows when it was last generated:

http://c.tile.openstreetmap.org/14/8126/5331.png/status

Adding /dirty to the end schedules it to be rerendered

http://c.tile.openstreetmap.org/14/8126/5331.png/dirty

(when this actually happens depends on how busy things are).

If a "flooding" problem has been fixed, this rerendering will fix a 
left-over tile that hasn't been scheduled to be rerendered yet.

More details here:

http://help.openstreetmap.org/questions/178/how-often-does-the-main-mapnik-map-get-updated/183


> What's the best way to prevent this happening? Is there a way to get 
> notification (email/text etc) if a specific entity gets modified?

Geofabrik's OSMI coastline view should show problems:

http://tools.geofabrik.de/osmi/?view=coastline&lon=-3.92892&lat=54.54719&zoom=5&opacity=0.63&overlays=coastline,coastline_error_lines,line_not_a_ring,line_overlap,line_invalid,line_direction,questionable,coastline_error_points,unconnected,intersections,not_a_ring,double_node,tagged_node

Cheers,

Andy




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