topic Re: How to split polygon using another polygon in ArcGIS Pro Questions

How to split polygon using another polygon

CaitlinLisha — Wed, 18 May 2022 05:00:31 GMT

Have two data layers: forest and property boundaries that cover a large area.

I need to split the forest layer by the properties so that I can calculate the area of forest within each property.

How do I go about doing this?

Re: How to split polygon using another polygon

DanPatterson — Wed, 18 May 2022 08:54:09 GMT

Sounds like you want

Tabulate Area (Spatial Analyst)—ArcGIS Pro | Documentation

Re: How to split polygon using another polygon

JohannesLindner — Wed, 18 May 2022 09:23:39 GMT

Intersect

But if you are using ArcGIS Pro and have write access to the property feature class, you can also do this with CalculateField.

Use Arcade as Expression Type and use this expression (change "TestPolygons" to the name of your forest feature class):

// load the forest fc var forests = FeatureSetByName($datastore, "TestPolygons") // get all forests intersecting the current feature var intersecting_forests = Intersects($feature, forests) // calculate the sum of all forest areas in the current feature var forest_area = 0 for(var forest in intersecting_forests) { forest_area += Area(Intersection($feature, forest)) } // return that sum return forest_area