[OpenLayers-Users] Performance of different layers

[Mapmaker]

Hi Hanno,

If you are storing your data in a PostGIS database, you can extract your
data in an openlayers friendly format (KML, GML, GeoJSON) using a SELECT
ST_AsKML query.  See  http://postgis.refractions.net/docs/ST_AsKML.html
http://postgis.refractions.net/docs/ST_AsKML.html 

You could also write a php script that queries the database and writes out
the KML file with the style pulled from a database variable.

Alternatively, you could use GeoServer or MapServer to serve your data and
apply SLD styles as needed.  See 
http://openlayers.org/dev/examples/sld.html
http://openlayers.org/dev/examples/sld.html 

Hope this helps and best of luck!

BRYAN
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