[OpenLayers-Users] Question re. displaying large dataset

[Phil Scadden]

> I have a large dataset (2850 points) which I would like to display using
> OpenLayers. At present, I am using a simple text layer to display the
> locations, however it results in extremely slow browser performance.
Your browser has to download and parse the entire dataset no matter 
what. With datasets larger than 500 points, you will get much better 
performance if you put the data into a spatial format and serve with 
WMS/WFS (eg geoserver or mapserver). You dont get onhover worth 
considering with setup but just about everything else works far better.
-- 
Phil Scadden, Senior Scientist GNS Science Ltd 764 Cumberland St, 
Private Bag 1930, Dunedin, New Zealand Ph +64 3 4799663, fax +64 3 477 5232

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