[OpenLayers-Users] Re: I NEED FOR HELP

[Ricardo Bayley]

Hi folks,

After a thorough revision of my code, I noticed that when testes OL 2.11 I
added this line of code.
OpenLayers.Layer.Vector.prototype.renderers = ["SVG2", "VML", "Canvas"];

For some reason this screws up my OL 2.10. After deleting this, OL works
fine.

Can anyone explain what that line of code does ?

What I cant get to work is the property cursor:"pointer" in the style.

I will keep you posted.

Pointers are always welcome


Ricardo



2011/6/7 Ricardo Bayley <ricardo.bayley at gmail.com>

> Hi Folks,
>
> I have this code
>
> *                var q = arguments[0];*
> * var format = new OpenLayers.Format.GeoJSON({*
> *                'internalProjection': map.baseLayer.projection,    //
> 900913*
> *                'externalProjection': new
> OpenLayers.Projection('EPSG:4326')*
> * });*
> * var features = format.read(js);*
> * q.layer.addFeatures(features);*
> *
> *
> * var z = map.getZoomForExtent(q.layer.getDataExtent())-1;*
> * map.setCenter(q.layer.getDataExtent().getCenterLonLat(), z);*
>
>
> so far, everything works fine. Layer gets loaded with the features, and the
> are displayed.
> the last two lines of code  are giving me serious trouble. Don't know why,
> but features get duplicated and are slightly moved as if rendered at
> different scale or resolution.
>
> As soon as I pan the map, or switch base layers, or do anything that gets
> the map to "refresh", duplicated features are gone.
> If I don't zoom to the max extent of the layer, I dont get the duplicates.
>  I do a console.debug(q.layer) and I don't see any duplicated features.
> Layer only has 50 features as it should.
>
> It got me thinking, and since this might also be a styling issue, this is
> the style I use.
>
> *    var myStyle = new OpenLayers.StyleMap({*
> *        "default": new OpenLayers.Style({*
> *          cursor:"pointer",*
> *          graphicZIndex: "${getZIndex}"*
> *
> *
> *        },{context:funciones,*
> *            rules: [*
> *                    new OpenLayers.Rule({*
> *                        // a rule contains an optional filter*
> *                        filter: new OpenLayers.Filter.Comparison({*
> *                            type: OpenLayers.Filter.Comparison.LESS_THAN,
> *
> *                            property: "fid", // the "" feature attribute*
> *                            value: 15 // first 15*
> *                        }),*
> *                        // if a feature matches the above filter, use
> this symbolizer*
> *                        symbolizer: {*
> *             graphicHeight: 27,*
> *             graphicWidth : 27,*
> *                            externalGraphic: "${getIcon}",*
> *                            graphicYOffset : "${getYOffset}"*
> *                        }*
> *                    }), *
> *                    new OpenLayers.Rule({*
> *                        // apply this rule if no others apply*
> *                        elseFilter: true,*
> *                        symbolizer: {*
> *                         cursor:"pointer",*
> *                         pointRadius: 4, // based on
> feature.attributes.type*
> *                            fillColor: "#5781FC",*
> *                            strokeColor: "#000000",*
> *                            strokeWidth: "1"*
> *                        }*
> *                    })*
> *             ]         *
> *        }),*
> *        "select":new OpenLayers.Style({*
> *            graphicZIndex: 101*
> *        })*
> *    });*
>
> Anyhow, I attach a screenshot so you can see what I am talking about.
>
> Any pointers greatly appreciated
>
> Ricardo
>
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