topic Re: Optimised scale for distant points in .NET Maps SDK Questions

Optimised scale for distant points

vergerk — Thu, 05 May 2022 14:52:35 GMT

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

Re: Optimised scale for distant points

KeithGanzenmuller — Thu, 05 May 2022 15:39:54 GMT

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

Re: Optimised scale for distant points

Nicholas-Furness — Thu, 05 May 2022 17:34:40 GMT

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).

Re: Optimised scale for distant points

vergerk — Fri, 06 May 2022 09:55:41 GMT

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 🙂