[OpenLayers-Users] change layer style on zooming

[Sergeant_york]

This can be done with WMS but this can be also done with OpenLayers as well,

eg:

var somethingStyle = new OpenLayers.Style({
  //various style parameters here like colour, external graphic etc...
  'pointRadius': "${radiusFunction}"
  },
  {
   context: {
                radiusFunction: function(feature){
                            return map.getZoom()<+-*/><someConstant>;
                }
   });
   +-*/: whatever you want to use to reduce or increase the size of your
point, if it is not point you can change the stroke size etc...
   someConstant: a constant to make it desired size.

for example if your zoom number is 20 and you want to see point radius 1 at
0 zoom level and 21 at maximum zoom level the function will be like that:

function(feature){
return map.getZoom()+1
}




--
View this message in context: http://osgeo-org.1560.n6.nabble.com/change-layer-style-on-zooming-tp5014035p5014939.html
Sent from the OpenLayers Users mailing list archive at Nabble.com.