[OpenLayers-Users] GeoJSON layer and modifyFeature control

[Alexandre Dube]

Hi,

  Maybe this can helps.

var oStyle = new OpenLayers.Style({
      pointRadius: "${radius}",
            fillOpacity: 0.4,
            strokeColor: "#000000",
            strokeWidth: 2
            }, {
      context: {
          radius: function(feature) {
                return Math.min(feature.attributes.count, 10)*2 + 13;
            }
        }
    });

var oStyleMap = new OpenLayers.StyleMap({
        "default": oStyle,
         "select": new OpenLayers.Style({
               fillColor: "#66ccff",
              fillOpacity: 0.2,
               strokeColor: "#3399ff"
         })
});

var aoTypeColor = {
    '1': { fillColor:"blue" },
    '2': { fillColor:"red" },
    '3': { fillColor:"yellow" },
    '4': { fillColor:"white" }
};

oStyleMap.addUniqueValueRules("default", "Type", aoTypeColor);
oStyleMap.addUniqueValueRules("select", "Type", aoTypeColor);

Cheers,

Alexandre

Adorian Ardelean wrote:
> Hi Eric,
>
> No...it is not working yet. There is some improvement indeed: I can 
> see now the selection style, but vertexes are still not editable.
>
> I have tried to adapt the suggestion in post I have mentioned earlier.
>
> var styleMap = new OpenLayers.StyleMap();
>
> var rules = [new OpenLayers.Rule({
> symbolizer: template,
> elseFilter: true
> })];
> styleMap.styles["default"].addRules(rules);
>
> Using this the edit polygon works!!!. However, I did not figured out 
> how to include "context" within this. Select style is also not visible 
> (but I do not mind this, I can most probably find a work around for 
> selection style).
>
> Initially I have used:
> var mystyle = new OpenLayers.Style(template, {context: context});
> var styleMap = new OpenLayers.StyleMap(mystyle);
> And context worked fine.
>
> Any hints on how to include context with rules?
>
> Thank you,
> Adorian
>
>
>
> On Thu, Dec 4, 2008 at 5:58 PM, Eric Lemoine <eric.c2c at gmail.com 
> <mailto:eric.c2c at gmail.com>> wrote:
>
>     Hello
>
>     Try:
>
>     new OpenLayers.StyleMap({
>        "default": yourStyle
>     });
>
>     Hope this helps,
>
>     Eric
>
>     2008/12/4, Adorian Ardelean <mynature at gmail.com
>     <mailto:mynature at gmail.com>>:
>     > Hi again,
>     >
>     > I have eliminated also the context for style as a source of
>     problem for the
>     > modifyFeature control not working. So it seems that just by
>     specifying a
>     > styleMap as option when declaring the vector layer makes the
>     modifyFeature
>     > control not functional.
>     >
>     > var template = {
>     >     fillOpacity: 0.6,
>     >     fillColor: "red",
>     >     strokeColor:"orange",
>     >     strokeWidth:"1"
>     >     };
>     >
>     > var mystyle = new OpenLayers.Style(template);
>     >
>     > var regions = new
>     OpenLayers.Layer.Vector("regions",{extractAttributes:true,
>     > format: OpenLayers.Format.GeoJSON, projection: new
>     > OpenLayers.Projection("EPSG:4326"), styleMap: new
>     > OpenLayers.StyleMap(mystyle)});
>     >
>     >
>     > I think the solution might be somewhere in the post:
>     > StyleMap and ModifyFeatures aren't compatible ?I will give it a try.
>     >
>     > All the best,
>     > Adorian
>     >
>     >
>     > Dr. Adorian Ardelean
>     > coordinator of myNature Project
>     >
>     > http://mybiosis.info/nature/portal.php?pagename=firstpage [a
>     Romanian
>     > biodiversity-database]
>     > http://mybiosis.info/nature/portal.php?pagename=adorian [CV]
>     >
>
>
>
>
> -- 
> Dr. Adorian Ardelean
> coordinator of myNature Project
>
> proiectul myNature
> str. Rascoala din 1907 nr 12
> Timisoara 300523
> Romania
>
> http://mybiosis.info/nature/portal.php?pagename=firstpage [a Romanian 
> biodiversity-database]
> http://mybiosis.info/nature/portal.php?pagename=adorian [CV]
>
>
> Projects in which I was involved:
> http://hercules.kgs.ku.edu/Hexacoral/Anemone2/ [Hexacorallians of the 
> World]
> http://www.ubio.org [uBio Project]
> http://portal.ubio.org [uBio Portal]
> http://microscope.mbl.edu [micro*scope Project]
> http://starcentral.mbl.edu/biopedia [BioPedia]
> http://starcentral.mbl.edu/custar [CU*STAR]
> http://planktonnet.awi.de/index.php [planktonNet]
>
> Yahoo messenger: transylvaniasan
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>
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-- 
Alexandre Dubé
Mapgears
www.mapgears.com