### Description
This example illustrates how to create and display an arrow that passes through two points.

It demonstrates two different ways to apply the transform:

1. Use [vtkTransformPolyDataFilter](http://www.vtk.org/doc/nightly/html/classvtkTransformPolyDataFilter.html) to create a new transformed polydata. This method is useful if the transformed polydata is needed later in the pipeline, e.g. vtkGlyph3DFilter.

2. Apply the transform directly to the actor using [vtkProp3D's SetUserMatrix](http://www.vtk.org/doc/nightly/html/classvtkProp3D.html#a950378fc70405a58bd998c00f84a39a3). No new data is produced.

Switch between the two methods by #defining USER_MATRIX or leaving out the #define.

!!! seealso
    Compare this example with [Oriented Cylinder](OrientedCylinder) . The transform is different because the cylinder height direction is along the y-axis and the arrow height is along the x axis.
 
