AW: [OpenLayers-Users] Re: Circles

[Arnd Wippermann]

You have to use KML or GML to get features with an attribute "radius".

Add your layer and register the event "loadend" to create your buffer

layerGML.events.register("loadend", layerGML, something);

function something()
{
    var pointFts = this.features;
    var sides = 25;

    var fts = [];
    for(var i=0;i<pointFts.length;i++)
    {
        var radius = pointFts[i].attributes["radius"]*10;
        var cPt = pointFts[i].geometry;
        var theGeom = new
OpenLayers.Geometry.Polygon.createRegularPolygon(cPt, radius, sides, 0);

        var ft = new OpenLayers.Feature.Vector();
        ft.geometry = theGeom;
        fts.push(ft);
    }
    this.addFeatures(fts);
}

Arnd

-----Ursprüngliche Nachricht-----
Von: openlayers-users-bounces at lists.osgeo.org
[mailto:openlayers-users-bounces at lists.osgeo.org] Im Auftrag von Vikash
Talanki
Gesendet: Freitag, 18. Februar 2011 17:29
An: users at openlayers.org
Betreff: [OpenLayers-Users] Re: Circles


Hi everyone,

I want to create an application in which input values of lat,long,radius are
given and I have to point the markers (of lat-long values) and create
buffers(of corresponding radius) around them. However I am able to create
markers on the map by giving lat long values in text file, but I am really
stuck when I want to create buffers around them, and I dont know how to give
radius values in text file. Please help me out in this issue, If text file
is not correct then which file file format I have to use(like KML,etc) and
how to carry on this work
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