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

[David Fawcett]

Good point Chris.

I wasn't thinking of clustering (a requirement Jon's...)

I guess that I was thinking that one could do some sort of data
thinning and provide those views at smaller scales.  Either way, if
one thinned the data or applied a clustering algorithm, this would
likely be done as a pre-processing step to prepare some data sets to
build a WMS on.

In short, never mind...

Apologies for sending you down the wrong path.

David.

On Tue, Oct 6, 2009 at 9:40 AM, Christopher Schmidt
<crschmidt at metacarta.com> wrote:
> On Tue, Oct 06, 2009 at 09:22:47AM -0500, David Fawcett wrote:
>> Also, if you don't need the vector feature funcionality (and you are
>> using a server product capable of serving a WMS), you might think
>> about using a WMS layer and dealing with the scale-dependent rendering
>> on the server side.
>
> I'm not aware of any map rendering products that do clustering-style
> displays easily, though? Maybe this is an option in some of them
> that I'm not aware of?
>
> -- Chris
>
>> David.
>>
>> On Tue, Oct 6, 2009 at 1:27 AM, Christopher Schmidt
>> <crschmidt at metacarta.com> wrote:
>> > On Mon, Oct 05, 2009 at 04:07:27PM -0800, 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.
>> >
>> > Clustering.
>> >
>> > http://openlayers.org/dev/examples/strategy-cluster.html
>> >
>> >> Thanks in advance for any help.
>> >>
>> >> Jon
>> >
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> --
> Christopher Schmidt
> MetaCarta
>