[OSM-dev] Tiles at home Strange sea rendering

Tapio Sokura oh2kku at iki.fi
Mon Aug 13 22:54:17 BST 2007


spaetz wrote:
> On Wed, Aug 08, 2007 at 08:11:37PM +1000, Brent Easton wrote:
>> This has fixed my problem.
>>
>> What I don't understand is why this has suddenyl started happening? That same tile has been rendered multiple times over the last couple of weeks with no problem.
> 
> See my previous mail on the change of tiles that are marked as mixed (ie coastline). They would render as land previously but starting some time ago, the assumption was changed that they are actually sea with some islands in it. So tiles that had been "mistagged" like that would work before and have been broken afterwards. At least that is my theory.

I was doing some edits and started to wonder, is there really any need 
to flag tiles as mixed sea/land tiles? Couldn't we just have sea and 
land tiles and nothing in between. Someone has to draw the coastline for 
mixed tiles anyway and when the coastline is there, the empty tile 
database for that tile is redundant information anyway.

   Tapio




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