Le Wednesday 22 October 2008 15:39:57 arno974, vous avez écrit :
> Ahh okay i understand what you want.
>
> With the OpenLayers.Strategy.Cluster you can only merge the features when
> they are close to each other. In your example, the two points have been
> merge into only one.
>
> If you want to enlarge the radius size of the point you must change with
> the pointRadius parameter of your Style object :
>
> for example :
>
> var style = new OpenLayers.Style({
> pointRadius: "${radius}",
> fillColor: "#ffcc66",
> fillOpacity: 0.8,
> strokeColor: "#ff0000",
> strokeWidth: 2,
> strokeOpacity: 0.3
> }, {
> context: {
> radius: function(feature) {
> /*
> console.log(Math.min(feature.attributes.count,7) + 4);
>
> if((Math.min(feature.attributes.count,7) + 4)<7) {
> return
> Math.min(feature.attributes.count,7) + 3;
> }
> else {return
> Math.min(feature.attributes.count,7) + 7;} */
> return Math.min(feature.attributes.count,7)
> + 4;
> }
> }
> });
>
> GML = new OpenLayers.Layer.Vector(
> "GML", {
> strategies:[
> new
> OpenLayers.Strategy.Fixed(), new
> OpenLayers.Strategy.Cluster()
> ],
> protocol: new OpenLayers.Protocol.HTTP({
> url: "./poi_random/gml/random_poi.gml",
> format: new OpenLayers.Format.GML()
> }),
> styleMap:new OpenLayers.StyleMap({
> "default": style,
> "select": {
> fillColor: "#8aeeef",
> strokeColor: "#32a8a9"
> }
> })
> });
>
>
>
> it merge the features when they are
>
> Yves Jacolin (free) wrote:
> > Le Wednesday 22 October 2008 12:33:04 arno974, vous avez écrit :
> >> Hello Yves,
> >>
> >> Tried to add a new OpenLayers.Strategy.Fixed(), in your strategies and
> >> it should work.
> >> I noticed that the cluster doesn't work if i don't use the fixed
> >> strategy.
> >> Maybe a bug or i didn't use it in a good way.
> >>
> >> Here you will find an example : http://geotribu.net/?q=node/47
> >>
> >> Regards
> >>
> >> Arnaud
> >>
> >> Yves Jacolin (free) wrote:
> >> > Hello,
> >> >
> >> > I am trying to set up a cluster strategy for one of my vector layer. I
> >> > add this code to my existing code:
> >> > var vector = new OpenLayers.Layer.Vector(name,
> >> > {
> >> > strategies: [
> >> > new OpenLayers.Strategy.Cluster({distance:20})
> >> > ]
> >> > }
> >> > );
> >> > Before this, the code was " var vector = new
> >> > OpenLayers.Layer.Vector(name);"
> >> >
> >> > I fill my vectorLayers later, reading a postgis result with:
> >> >
> >> > var feature = wktParser.read(_tmp[1]);
> >> > [..]
> >> > vectorLayer.addFeatures([ feature ]);
> >> >
> >> > I get only one feature (instead of 2) for all the zoom level. I tried
> >>
> >> to
> >>
> >> > change the distance option above, but nothing append. If I check the
> >>
> >> DOM,
> >>
> >> > nothing show me that there are more than 1 feature in this layer.
> >> >
> >> > Where am I wrong?
> >> >
> >> > Y.
> >> > PS : the code is much more longer than here and is split in several
> >> > functions
> >> > so I can't show you all in once, I tried to put the most readable as
> >> > possible.
> >> > --
> >> > Yves Jacolin
> >
> > Hi,
> >
> > Thanks Arnaud, but it doesn't change anything for me, except that now I
> > have
> > to define a protocol parameter in my Vector constructor.
> >
> > Do I need to load data when creating the layer? Currently I load my data
> > later
> > in the process (at the end of the page) as I need to load different data
> > after the search process.
> >
> > Y.
> > --
> > Yves Jacolin
> > ---
> > http://softlibre.gloobe.org
> > _______________________________________________
> > Users mailing list
> > Users@openlayers.org
> > http://openlayers.org/mailman/listinfo/users
Hi,
Sorry, same problem: I think there is another problem somewhere. I have 4
features, each time I see one of them. I should see at least 3 features, as 2
are in the same street so have to be in one cluster.
The issue is that when I zoom on one feature (in "La defense", west of Paris),
it disapears and after zooming out, another feature appear (in the south-east
of Paris) in other location. Strange behaviour ;)
Y.
PS : http://softlibre.free.fr/ol/test.html updated!
--
Yves Jacolin
---
http://softlibre.gloobe.org
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