The VZ function returns the z-direction velocity for one marker or the relative velocity of two markers in the z-direction.
Format
Arguments definition
Marker1 |
The name or argument number of a marker to be calculated |
Marker2 |
The name or argument number of the marker to use in the relative calculation • If omitted, then the InertiaMarker is applied. |
Marker3 |
The name or argument number of the marker for axis definition • If omitted, then the InertiaMarker is applied. |
Marker4 |
A standard marker for calculating velocity • The formula measures the velocity relative to Marker4’s angular velocity. • Marker4 must be the same value as Marker3. If omitted, then the InertiaMarker is applied. |
Formulation
: Velocity vector of the Marker1 relative to Marker4’s angular velocity
: Velocity vector of the Marker2 relative to Marker4’s angular velocity
: z-direction unit vector of Marker3
Example
VZ (body1.marker1)
VZ (body1.marker1, body2.marker2)
VZ (body1.marker1, body2.marker2, body3.marker3)
VZ (body1.marker1, body2.marker2, body3.marker3, body3.marker3)
VZ (1,2,3,3) <Argument: (1)body1.marker1, (2)body2.marker2, (3)body3.marker3>