Plot lines from 3d points to ground using JS API 4.x

[Jay_Gregory]

I have a CSV Layer that is represented by 3d points in a SceneView, and am wondering what the best way is to plot lines from these points to the ground.  

I was curious if its possible using the callout lines feature of layers (LineCallout3D | ArcGIS API for JavaScript 4.12 ) or if that's really just for when points are obscured by other 3d features. I haven't quite figured out how to get these callout lines to get all the way to ground no matter the camera angle.   

Other options are: can I use the geometry engine to do this?  Or do I just need to create additional layers to plot the lines?

Thanks!

[VictorTey]

Hi, I would use

https://developers.arcgis.com/javascript/latest/api-reference/esri-symbols-LineSymbol3D.html

the callout are better used for labelling.

[BenElan]

Here is a sample using a 3D line to help you get started