topic Re: Convert Graphic (polygon) coordinates in ArcGIS API for Silverlight Questions

Convert Graphic (polygon) coordinates

EnriqueIbarra — Fri, 25 Jan 2013 20:53:06 GMT

I have a FeatureSet, result from a query, now I'm triying to highlight the results (polygons) in a graphic layer but need to convert the cordinates of them from Geographic to WebMercator. there's a way to do it?

Re: Convert Graphic (polygon) coordinates

MelitaKennedy — Fri, 25 Jan 2013 21:20:02 GMT

ESRI.ArcGIS.Client.Projection Namespace > WebMercator Class : FromGeographic Method ?

There's a similar method under the Bing namespace, but it works with MapPoints.

Re: Convert Graphic (polygon) coordinates

EnriqueIbarra — Thu, 31 Jan 2013 17:20:39 GMT

ESRI.ArcGIS.Client.Projection Namespace > WebMercator Class : FromGeographic Method ?

There's a similar method under the Bing namespace, but it works with MapPoints.

thanks, sorry can you be a little more clear on how to use the first option?

Re: Convert Graphic (polygon) coordinates

DominiqueBroux — Wed, 06 Feb 2013 15:18:26 GMT

thanks, sorry can you be a little more clear on how to use the first option?

Should be something like:

  var geometryInWebMercator = new ESRI.ArcGIS.Client.Projection.WebMercator().FromGeographic(geometryInWGS84);

You'll find the documentation here.

I have a FeatureSet, result from a query, now I'm triying to highlight the results (polygons) in a graphic layer but need to convert the cordinates of them from Geographic to WebMercator. there's a way to do it?

If you are using a recent version of the ArcGIS API for Silverlight, the projection to WebMercator coordinates should be done automatically by the graphics layer so you should not have to do it by yourself.

Another option, which avoids the conversion at client side, is to query the graphics directly in the map spatial reference by setting the OutSpatialReference of your query.