Transform.BasisX Property

The basis of the X axis of this transformation.

Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 26.2.0.0 (26.2.0.0)

Syntax

public XYZ BasisX { get; set; }

Exception	Condition
InvalidOperationException	Thrown when the transform is internally marked as read-only.

The X axis of the old coordinate system in the new coordinate system, or the 1st column of the conventional 3x4 matrix representation.