[OpenLayers-Users] RegularPolygon radius document questions

[Grégory COLLIN]

Le Mon, 28 Jan 2013 08:15:48 +0100,
杨华杰 <yhjhoo at gmail.com> a écrit :

> Hi
> 
> I have a question about the document.
> 
> Here is the URL:
> http://dev.openlayers.org/docs/files/OpenLayers/Handler/RegularPolygon-js.html#OpenLayers.Handler.RegularPolygon.setOptions
> 
> 
> 
> The
> radius<http://dev.openlayers.org/docs/files/OpenLayers/Handler/RegularPolygon-js.html#OpenLayers.Handler.RegularPolygon.radius>
> explain as {Float} Optional radius in map units of the regular
> polygon.
> 
> 
> What's the unit? kilometer/meter/mile/NM?
> 
> 
> Regards,
> Hua Jie

Hi Hua Jie,

The units requested could be defined in the map object.

So here is the code sample i used : 

  var map = new OpenLayers.Map({
       div: "map",
       theme: null,
       units: 'm',
       projection: "EPSG:900913",
       controls: [
         new OpenLayers.Control.Navigation({zoomWheelEnabled: false}),
         new OpenLayers.Control.NavToolbar({zoomWheelEnabled: false}),
         new OpenLayers.Control.PanZoomBar(),
         new OpenLayers.Control.ScaleLine()]
    });


So you can add the unit you want in this constructor.
according to the documentation :
http://dev.openlayers.org/releases/OpenLayers-2.6/doc/apidocs/files/OpenLayers/Map-js.html#OpenLayers.Map.units

you can specify : ‘degrees’ (or ‘dd’), ‘m’, ‘ft’, ‘km’, ‘mi’, ‘inches’.

Enjoy,

Best regards.