[OpenLayers-Users] Rules, Styles and context

[Andreas Hocevar]

Hi,

you are using the context in an incorrect way. Try something like

var context = {
    color: function(feature) {
        return feature.stylers.color;
    }
};

If you have your color in feature.attributes, you don't need a context at all.

Regards,
Andreas.

On May 27, 2010, at 08:49 , James.Sewell at lisasoft.com wrote:

> Hello,
>  
> I want to dynamically set a strokeColor based on feature.styler.color rather that feature.attribute.color.
>  
> I am using this code:
>  
> var context = function(feature) {
>                 feature.stylers ? ret = feature.stylers : ret = feature.attributes;
>                 ret ? null : ret = feature;
>                 return ret;
> }
>  
> var defaultStyle = new OpenLayers.Style(OpenLayers.Util.applyDefaults({ strokeColor: "${color}", strokeWidth: 3 }
>         , OpenLayers.Feature.Vector.style["default"]), {context: context});
>  
> I have also tried this:
>  
> var defaultStyle = new OpenLayers.Style(OpenLayers.Util.applyDefaults({ strokeColor: "${color}", strokeWidth: 3 }
>         , OpenLayers.Feature.Vector.style["default"]), {context: {styler: null}}) ;
>  
> But neither seem to work! I am particularly confused as the top example works for OpenLayers.Rule context manipulation.
>  
> Any hints?
>  
>  
> Cheers,
> 
> James Sewell
> LISAsoft Developer
> +61 (3) 8680 3200 / +61 414 688 892
>  
>  
>  
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-- 
Andreas Hocevar
OpenGeo - http://opengeo.org/
Expert service straight from the developers.