Unable to centre the point feature when zooming to the particular scale in the map.

BALASARAVANAMUTHUMADASAMY — Fri, 21 Sep 2012 11:24:24 GMT

Hi All,

I have to do the following tasks,
1. pan the point feature to centre of the screen.
2. zoom to the point feature at specific scale.

I am able to pan the feature to centre of the screen and after that I am able to zoom to the specific scale. But point feature was not centred.

Thanks,
Balu.

Re: Unable to centre the point feature when zooming to the particular scale in the ma

DominiqueBroux — Sat, 11 Dec 2021 07:32:21 GMT

I guess there is an issue becasue PanTo and ZoomTo are asynchronous functions (with animations), so executing bothh in // may be an issue.

Here is an example of function panning and zooming with only one call:

private void centerAndZoom(ESRI.ArcGIS.Client.Map map, ESRI.ArcGIS.Client.Geometry.MapPoint mapPoint, double resolution)
{
double ratio = 1.0;
if (map.Resolution != 0.0)
ratio = resolution / map.Resolution;

if (ratio == 1.0)
map.PanTo(mapPoint);
else
{
ESRI.ArcGIS.Client.Geometry.MapPoint mapCenter = map.Extent.GetCenter();
double X = (mapPoint.X - ratio * mapCenter.X) / (1 - ratio);
double Y = (mapPoint.Y - ratio * mapCenter.Y) / (1 - ratio);
map.ZoomToResolution(resolution, new ESRI.ArcGIS.Client.Geometry.MapPoint(X, Y));
}
}

Note : it's using Map.Resolution but might easily be adpated to use Map.Scale.

topic Unable to centre the point feature when zooming to the particular scale in the map. in ArcGIS API for Silverlight Questions

Unable to centre the point feature when zooming to the particular scale in the map.

Re: Unable to centre the point feature when zooming to the particular scale in the ma