[OpenLayers-Users] http protocol problem

[Christopher Schmidt]

On Wed, Nov 05, 2008 at 06:26:16AM -0800, Jerome Freyre wrote:
> 
> Hi Didrik,
> 
> It is strange... I do almost the same thing and it is working...
> The only change is that I use the OpenLayers.Strategy.Fixed() and
> OpenLayers.Strategy.Cluster() 

Yes, you need to use a strategy that requests features. Cluster does
not. Fixed does. So use a Fixed strategy, and a cluster strategy:

 strategies: [ new OpenLayers.Strategy.Fixed(), new
 OpenLayers.Strategy.Cluster()]

> In Firebug, can you see the HTTP Request when the layer is loaded? In the
> response do you have the correct geojson?
> 
> In my case the protocol work fine on the first load but if I want to load
> new features, I have to use protocol.read() and a callback function like
> you.
> 
> 
> Didrik Pinte-5 wrote:
> > 
> >      vector_layer = new OpenLayers.Layer.Vector('Points', {
> >             styleMap    : styleMap,
> >             strategies  : [
> >                 new OpenLayers.Strategy.Cluster()
> >             ],
> >             protocol: new OpenLayers.Protocol.HTTP( {
> >                 url : 'stream.json',
> >                 format: new OpenLayers.Format.GeoJSON()
> >             })
> >        }); 
> > 
> 
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> 
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-- 
Christopher Schmidt
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