[OpenLayers-Users] Need advice regarding styling vector points

[Arnd Wippermann]

Hi Zer,

In the example of the first post, I create the unique rules always new after
a checkbox change. 

There could be the possibility to change the visibility of the style of
features using display:"none" or display:"" without modifing the other style
attributes. For OL 2.7 it works only with patch
http://trac.openlayers.org/ticket/1898.

But i have no idea, how to add this to a specific rule.

Arnd

 

-----Ursprüngliche Nachricht-----
Von: users-bounces at openlayers.org [mailto:users-bounces at openlayers.org] Im
Auftrag von Zer
Gesendet: Samstag, 7. März 2009 22:51
An: users at openlayers.org
Betreff: Re: [OpenLayers-Users] Need advice regarding styling vector points




Arnd Wippermann wrote:
> 
> Hi
> 
> you can use rules with OpenLayers.Filter.Comparison.BETWEEN
> 
> var aStyleMap = new OpenLayers.StyleMap();
> 
> var rules = [];
> rules.push(new OpenLayers.Rule({
>     symbolizer: {fillOpacity:0,
> pointRadius:3,strokeWidth:2,strokeColor:"aquamarine"},
>     filter: new OpenLayers.Filter.Comparison({
>         type: OpenLayers.Filter.Comparison.BETWEEN,
>         lowerBoundary : 1,
>         upperBoundary : 3,
>         property: "popclass"
>     })
> }));
> rules.push(new OpenLayers.Rule({
>     symbolizer: {fillOpacity:1,
> fillColor:"FFAAAA",pointRadius:5,strokeWidth:2,strokeColor:"red"},
>     filter: new OpenLayers.Filter.Comparison({
>         type: OpenLayers.Filter.Comparison.BETWEEN,
>         lowerBoundary : 10,
>         upperBoundary : 11,
>         property: "popclass"
>     })
> }));
> rules.push(new OpenLayers.Rule({
>     symbolizer: {fillOpacity:0,
> pointRadius:5,strokeWidth:2,strokeColor:"FF8000"},
>     elseFilter: true
> }));
> 
> aStyleMap.styles["default"].addRules(rules);
> vectorLayer.styleMap = aStyleMap;
> vectorLayer.redraw();
>  
> Arnd Wippermannn
> 
> 

Thanks Arnd! That's a good start to show all features. But how do I do when
the users selects (using radio buttons) to only show features in one of
those groups, i.e. with "popclass" 1-3? Do I create 3 different stylemaps if
I have a 3 radiobuttons? Or is there a better way to do it?

-Z
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