Get polygon vertexes for attribute rules

mody_buchbinder — Tue, 07 Jun 2022 13:37:17 GMT

I would like to do some checks on a new created polygon using attribute rules.

For example count the vertexes or check if they exists as points in a different layer.

I could not find a way to do it.

Possible way is to convert the feature geometry to JSON.

I found FromJSON but not ToJSON. There are many functions to translate from JSON to feature but not the other way around.

Is there any way to do it?

Thanks

Re: Get polygon vertexes for attribute rules

JohannesLindner — Wed, 08 Jun 2022 07:21:52 GMT

Documentation for polygons and polylines: Type System | ArcGIS Arcade | ArcGIS Developer

Polygons have a rings attribute, polylines have a paths attribute. These are three-dimensional lists of numbers, representing point coordinates of multiple line segments / rings.

// get the number of vertices in a polygon var rings = Geometry($feature).rings var vertex_count = 0 for(var i in rings) { vertex_count += Count(rings[i]) // for polygons, the first and last point of a ring are the same, so we have to subract 1 vertex_count -= 1 } return vertex_count

// get number of points on vertices var rings = Geometry($feature).rings var point_fc = FeatureSetByName($datastore, "TestPoints", ["OBJECTID"], true) var points_on_vertices = 0 for(var i in rings) { for(var j in rings[i]) { var vertex = rings[i][j] points_on_vertices += Count(Intersects(vertex, point_fc)) } } return points_on_vertices

topic Re: Get polygon vertexes for attribute rules in ArcGIS Pro Questions

Get polygon vertexes for attribute rules

Re: Get polygon vertexes for attribute rules