[OpenLayers-Users] Grouping Features into "one" feature using Styles or other means

[Roald de Wit]

Hi Jon,

On 06/10/09 11:07, Jonathan Sawyer wrote:
> Hi everyone,
>
> I have a feature class of points that displays a breadcrumb trail of
> GPS points for a target. When zoomed out to the full extent of the
> map, OpenLayers renders 1000+ points in a tiny little area, thus
> reducing performance of my application. Is there a way I can tell
> OpenLayers to render just one point for a bunch of points within a
> given radius of the point? For example, when zoomed out to the full
> extent, I would rather have 1 to 3 points rendered rather than 1000+,
> but then be able to see every point applicable when zoomed in.

Have you checked out the OpenLayers examples page [1]? Type in the
'Filter by keywords' field the word 'cluster' and you'll see two
examples that do exactly what you are looking for. :-)

[1] http://openlayers.org/dev/examples/

Regards, Roald

--
Roald de Wit
Software Engineer
roald.dewit at lisasoft.com

Commercial Support for Open Source GIS Software
http://lisasoft.com/LISAsoft/SupportedProducts/



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