[OpenLayers-Users] Forcing a redraw of a Vector Layer

[Roald de Wit]

Hi Adrian,

With the new vector behaviour, layer refreshing is a bit different. This
should work for you:

locations.refresh({force: true});

Regards,

Roald

Adrian Popa wrote:
> Hello everyone,
>
> I'm using a Vector layer with a BBOX strategy and gets dynamic data from
> a KML file and it works as expected. However, the data I'm displaying is
> kind of dynamic (alarms which come and go) and I would like to
> automatically refresh the layer (without doing a page reload) from time
> to time. I've tried using the redraw() function, but it doesn't refresh
> the data (since it detects the BBOX hasn't changed).
>
> Is there any way to force the layer to re-request the data?
>
> Here's my layer definition:
>
> locations = new OpenLayers.Layer.Vector("Alarm Locations", {
>                         projection: map.displayProjection,
> minResolution: 1, maxResolution: 38,
>                         strategies: [new OpenLayers.Strategy.BBOX()],
>                         protocol: new OpenLayers.Protocol.HTTP({ url:
> "kml_locations.pl", format: new OpenLayers.Format.KML({ extractStyles:
> true, extractAttributes: true })})});
> map.addLayer(locations);
>
> setTimeout('locations.redraw()', 30000);
>
> Regards,
> Adrian
>
> _______________________________________________
> Users mailing list
> Users at openlayers.org
> http://openlayers.org/mailman/listinfo/users
>


--
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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