The VM function returns the absolute velocity of one marker or the absolute value of the relative velocity between two markers.
Format

Arguments definition
|
Marker1 |
The name or argument number of a marker to be calculated |
|
Marker2 |
The name or argument number of a marker to be calculated •If omitted, then the InertiaMarker is applied. |
|
Marker3 |
The name or argument number of the reference marker that will serve as the standard for direction •Marker3 must be the same value as Marker2. If omitted, then the InertiaMarker is applied. |
Formulation

:
Marker1's velocity vector from Marker3
:
Marker2's velocity vector from Marker3
Example
VM (body1.marker1)
VM (body1.marker1, body2.marker2)
VM(body1.marker1, body2.marker2, body2.marker2)
VM (1,2,2) <Argument: (1)body1.marker1, (2)body2.marker2>