topic Re: Unable to create 3D geometries with Pro SDK ImportFromJSON in ArcGIS Pro Questions

Unable to create 3D geometries with Pro SDK ImportFromJSON

JamesWright9 — Fri, 12 Mar 2021 18:59:43 GMT

I am attempting to import some 3d geometry via json into ArcGIS Pro using the Pro SDK; however, I am having some issues.

I am trying to create a 3D Polyline geometry in pro via the following Pro SDK code in .NET:

GeometryEngine.Instance.ImportFromJSON(JSONImportFlags.jsonImportDefaults, geometryJson);

The call succeeds and i am provided a valid Geometry however the Z coordinates are ignored and the HasZ is set to false? Is this a bug or am I maybe missing something?

Here is the json I am passing in via the geometryJson variable. As you can see the z values are provided for each coordinate and the vertical spatial references are noted. Any help would be appreicated.

{
"paths": [
[
[
12712034.466200002,
2553465.0080999993,
0.0
],
[
12712036.5786,
2553461.9959999993,
-2.0
],
[
12712036.625100002,
2553461.9448999986,
-2.0
],
[
12712036.672600001,
2553461.9134000018,
-2.0
]
]
],
"spatialReference": {
"wkid": 3857,
"latestWkid": 3857,
"vcsWkid": 105703,
"latestVcsWkid": 6360
}
}

Re: Unable to create 3D geometries with Pro SDK ImportFromJSON

NarelleChedzey — Fri, 19 Mar 2021 00:12:22 GMT

Hi James,

The expected format of a JSON string that supports Zs would have the "hasZ" attribute included. Here's an example of JSON string for a polyline that supports Zs.

{"hasZ":true,"paths":[[[100,200,3],[201,300,4],[301,400,5],[401,500,6]]],"spatialReference":{"wkid":102100,"latestWkid":3857}}

If that attribute is included, then the geometry resulting from the ImportFromJSON will have .HasZ = true

Hope this helps.

Narelle

Re: Unable to create 3D geometries with Pro SDK ImportFromJSON

JamesWright9 — Fri, 19 Mar 2021 13:04:12 GMT

Narelle,

Thanks for responding! That makes complete sense, I thought I must be missing something simple. Our data structures don't have that concept of a 'z' flag, instead simply check the data, so I didn't think of it that way, but this works great!

Thanks again, life saver!

James