### 25.2.3. Coordinate Frame: Direction

#### 25.2.3.1. Invert Normal Axis Direction Check Box

(applies only when Option is set to `Point and Normal`)

This check box determines whether or not the direction of the Z axis is reversed from that initially determined.

#### 25.2.3.2. Point on Reference Plane 1-3 Check Box

(applies only when Option is set to `Point and Normal`)

This check box determines whether or not the theta=0 direction is defined explicitly by a point in the 1-3 plane. If selected, you must specify that point.

#### 25.2.3.3. Point on Reference Plane 1-3 Check Box: Coordinate

Enter global Cartesian coordinates that define a point on the 1-3 plane of the coordinate frame. The direction of this point from the nearest point on Axis 3 is the direction of Axis 1. Axis 1 corresponds with the radial direction for theta=0.

Tip: With Single Select selected, you may click 2D locations in the viewer to select their corresponding points.

Release 18.2 - © ANSYS, Inc. All rights reserved.