| -h | Help, prints usage message. | 
| -o | Output affine transform object. | 
| -2 | 2D transform, default. | 
| -3 | 3D transform. | 
| -R | Use radians for angles instead of degrees. | 
| -g | General affine transform. | 
| -r | Rigid body transform. | 
| -t | Translation only transform. | 
| -x | Mean column (x) translation. | 
| -X | Half range of column (x) translation. | 
| -y | Mean row (y) translation. | 
| -Y | Half range of row (y) translation. | 
| -z | Mean plane (z) translation. | 
| -Z | Half range of plane (z) translation. | 
| -a | Mean rotation about the z-axis. | 
| -A | Half range of rotation about the z-axis. | 
| -b | Mean rotation about the y-axis. | 
| -B | Half range of rotation about the y-axis. | 
| -u | Mean shear strength. | 
| -U | Half range of shear strength. | 
| -v | Mean shear angle in x-y plane. | 
| -V | Half range of shear angle in x-y plane. | 
| -w | Mean 3D shear angle. | 
| -W | Half range of 3D shear angle. | 
| -s | Mean scale factor. | 
| -S | Half range of scale factor. | 
| -e | Integer seed for random number generator. |