Share Email Facebook Twitter LinkedIn ConicalSurface.YDir Property X axis of the local coordinate system associated with this cone. Namespace: Autodesk.Revit.DBAssembly: RevitAPI (in RevitAPI.dll) Version: 26.1.0.0 (26.1.0.34) Syntax C# public XYZ YDir { get; }Property ValueXYZ See AlsoReferenceConicalSurface ClassAutodesk.Revit.DB Namespace