Optimised scale for distant points

[vergerk]

Hello,

I have defined several remote points of interest on my 2D map and the scale is not appropriate.

Not wanting to put an arbitrary value in MainMapView.SetViewpointScaleAsync(value), is there a function to adapt the scale to display all the points present?

Or how is the scale calculated?

Thanks !

Sincerely

[KeithGanzenmuller · Accepted solution]

If your points are in a layer it's possible to set the ViewPoint to the Layer.FullExtent envelope

myMapView.SetViewpointAsync(new Viewpoint(YourLayerEnvelope));

 Of course you have to obtain the YourLayerEnvelope

[Nicholas-Furness · Accepted solution]

If you have your point of interest geometries, you could also use GeometryEngine.combineExtents to get the minimal containing envelope. You can then pass that envelope to MapView.SetViewpointGeometryAsync() (that's a shortcut/equivalent to the method that Keith mentioned above).

[vergerk]

Hello,

I had tried this approach by creating the envelope myself but nothing worked because I had not specified the spatial reference frame...

Thanks for your solutions, they are cleaner than the one I used 🙂