topic Re: Problem with reprojection in ArcGIS API for Silverlight Questions

Problem with reprojection

Anonymous User — Fri, 27 Apr 2012 19:22:11 GMT

Original User: rogeryc

Hi, I'm having the following issue:

[ATTACH=CONFIG]13896[/ATTACH]

The yellow flag is a point feature with WGS 84 zone 20S projection (wkid: 32720), in a feature layer. Using Bing or ArcGIS Online map, that point is correctly drawn by the viewer. The green star is a graphic added to a graphic layer in the same projection (32720) with the same x,y coordinate.

Why are they drawn in different places?

Regards,
Roger.

Re: Problem with reprojection

DeminHu — Fri, 27 Apr 2012 19:40:59 GMT

How you add that green point, can you show your code here?

Re: Problem with reprojection

Anonymous User — Fri, 27 Apr 2012 21:28:44 GMT

Original User: jenniferdnery

Does your GraphicsLayer Graphic.Geometry has its SpatialReference set?

Re: Problem with reprojection

Anonymous User — Wed, 02 May 2012 15:08:54 GMT

Original User: rogeryc

How you add that green point, can you show your code here?

This is the code:

var point = results[0].Geometry as MapPoint;

GraphicsLayer graphicsLayer;

Layer layer = Mapa.Layers["X,Y Point"];
bool isNull = (layer != null);
bool isGraphicLayer = (layer is GraphicsLayer);
if (isNull && isGraphicLayer)
{
    graphicsLayer = layer as GraphicsLayer;
}
else
{
    graphicsLayer = new GraphicsLayer();
    graphicsLayer.ID = "X,Y Point";
    graphicsLayer.SetValue(MapApplication.LayerNameProperty, nombreCapaGrafica);
}

graphicsLayer.ClearGraphics();
graphicsLayer.Graphics.Add(results[0]);

if (MapApplication.Current.Map.Layers[graphicsLayer.ID] == null)
{
    MapApplication.Current.Map.Layers.Add(graphicsLayer);
}

Regards.

Re: Problem with reprojection

Anonymous User — Wed, 02 May 2012 15:10:37 GMT

Original User: rogeryc

Does your GraphicsLayer Graphic.Geometry has its SpatialReference set?

No, the spatial reference is null, and I don't know how to set it, because the SpatialReference property is read only. What am I missing?

Regards.