[mapserver-users] Point lables and tiles

paalkr pal.kristensen at statkart.no
Mon May 25 10:45:15 EDT 2009


Hi!

Thanks for the hint! The problem is that I'm using GeoWebCache and not
tilecache :) Is the
     METADATA
        labelcache_map_edge_buffer "-10"
    END
a MapServer keyword? What does it do exactly?

Any other possible solutions?

Regards,
Pål Kristensen


Thomas Bonfort-2 wrote:
> 
> http://lists.osgeo.org/pipermail/mapserver-users/2009-March/060214.html
> 
> regards,
> thomas
> 
> --
> www.camptocamp.com
> +33 4 79 26 57 97
> 
> 
> 
> On Mon, May 25, 2009 at 15:00, paalkr <pal.kristensen at statkart.no> wrote:
>>
>> Hi!
>>
>> When creating tiles for my tilecache I have some issues regarding point
>> labels. Using the PROCESSING label_no_clip=true works for line and
>> polygon
>> labels, but points has not area/size and will therefor newer be present
>> in
>> two neighbouring tiles. The result are clipped labels because only one
>> tile
>> will ever know about the presence of a point. If then the label should
>> have
>> been rendered into the next tile, it will be clipped. Metatiles
>> (requesting
>> more than one tile at a time and splitting it up on the tile server)
>> helps,
>> but only a little, as the same problem will occur between metatiles.
>>
>> A solution would be that MapServer rendered each tile (map) some
>> percentage
>> larger than requested, and then chops of the excess area before
>> delivering
>> the final map. A setting at the MAP level of the mapfile controlling this
>> "grow" mechanism would be great, defining the percentage the map shall be
>> extended before rendering.
>>
>> Second, is there any other way to solve the issue? Especially if there
>> are
>> already features in MapServer that can be used.
>>
>> Regards,
>> Pål Kristensen
>>
>>
>>
>> -----
>>
>> Regards,
>> Pål Kristensen
>> --
>> View this message in context:
>> http://n2.nabble.com/Point-lables-and-tiles-tp2969528p2969528.html
>> Sent from the Mapserver - User mailing list archive at Nabble.com.
>>
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-----

Regards,
Pål Kristensen
-- 
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