ArcGIS Pro 3.0 API Reference Guide
ArcGIS.Core.Data.NetworkDiagrams Namespace / SmartTreeDiagramLayoutParameters Class / SubtreeSpacing Property

SubtreeSpacing Property
Determines the spacing between two neighboring subtrees.
Syntax
public double SubtreeSpacing {get; set;}
Remarks
Determines the spacing between two neighboring subtrees; that is, the spacing between diagram junctions that are displayed perpendicular to the smart tree direction and belong to a different subtree. The default is 2.
Requirements

Target Platforms: Windows 11, Windows 10, Windows 8.1

ArcGIS Pro version: 3.0 or higher.
See Also