[OpenLayers-Users] reprojecting issues

Gregor at HostGIS gregor at hostgis.com
Tue Jan 12 13:21:28 EST 2010


> I wonder if  reprojecting (about 6 layers?) and navigating 
> can substantially decrease the performance?

Reprojecting your data on the fly, will always have a performance cost. 
The cost is usually not much unless you're servicing a large volume of 
requests.

For best performance, store your data in the same SRS as it will be 
requested. Better to reproject once and forever, than with every single 
request.

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