Hi,

Perhaps it is mostly an AGG issue because I think that Mapnik makes similar 
artifacts too.  See Corine landuse polygons here  
http://www.openstreetmap.org/?lat=60.820709&lon=27.201925&zoom=18&layers=M
Sea areas do not have artifacts in OSM because sea is just background colour 
and is is not rendered at all from any data. But I do not know what Mapnik is 
doing with the land polygons. I cannot see artifacts between them in OMS maps.

-Jukka Rahkonen-

Lime, Steve D wrote:

> I tried locally and it's definitely a rendering artifact related to 
> anti-aliasing. Should an outline always be drawn?


> -----Original Message-----
> From: mapserver-users-boun...@lists.osgeo.org 
> [mailto:mapserver-users-boun...@lists.osgeo.org] On Behalf > Of Sven Geggus
> Sent: Friday, May 04, 2012 6:04 AM
> To: mapserver-users@lists.osgeo.org
Subject: Re: [mapserver-users] polygon border artifacts

thomas bonfort <thomas.bonf...@gmail.com> wrote:

> with a recentish version of mapserver, try setting PROCESSING
> "APPROXIMATION_SCALE=FULL"
> on your ocean layer, to avoid feature simplification (it will slow
> down the rendering if the resolution of your data is much greater than
> the resolution of the requested map).

Hm. Looking at the sources 6.0.1 seems to be recent enough, but unfortunately 
this does not seem to fix the problem.

Regards

Sven

--
Den Rechtsstaat macht aus, dass Unschuldige wieder frei kommen (Wolfgang 
Schäuble)

/me is giggls@ircnet, http://sven.gegg.us/ on the Web 
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