Adding Z values to Geometry

KeithGemeinhart1 — Fri, 13 Jan 2017 14:56:26 GMT

Using ArcGIS Runtime for .NET 100.0 and WPF. I have a geometry created using the sketch editor ...

_traceGeometry = await Mapview.SketchEditor.StartAsync(SketchCreationMode.Polyline, true);

Then later I want to create a feature using this geometry. However, the feature class has z values. So when I try to save it via ...

await table.AddFeaturesAsync(features);

I get an exception: "The shape must have a Z value."

My question is how can I add z values to this geometry? Do I need to recreate a new geometry using PolylineBuilder and adding a z-value for each point?

Initially all points can (and should) have 0 for a z-value, but eventually, we will run a calculation that adds z-values based on underlying elevation.

Alternatively, will the sketch editor create a z-enabled geometry if there is underlying elevation data included as a map layer?

Re: Adding Z values to Geometry

dotMorten_esri — Fri, 13 Jan 2017 21:46:56 GMT

Yes, you would have to go through the geometry in a builder and assign appropriate Z values to the vertices. The editor doesn't try and "guess" a Z value automatically, but forces the developer to make an informed decision about what Z values are correct, rather than risk inserting invalid geometry into your database. We are looking at making this easier (like for instance allowing you to set a default Z and/or M value)

MapView doesn't have an elevation source, and thus can't derive it from there either (and that would still mean making an assumption about what you're sketching that might be wrong).

topic Adding Z values to Geometry in .NET Maps SDK Questions

Adding Z values to Geometry

Re: Adding Z values to Geometry