(self, f)
return self._frame_vels[f, :]
Get the velocities of each joint at a specific frame.

    Args:
      f: Index of the frame.

    Returns:
      The selected frame velocity.
Get the velocities of each joint at a specific frame.
Get the velocities of each joint at a specific frame .
def get_frame_vel(self, f):
    """Get the velocities of each joint at a specific frame.

    Args:
      f: Index of the frame.

    Returns:
      The selected frame velocity.

    """
    return self._frame_vels[f, :]
def get_frame_vel ( self , f ) : return self . _frame_vels [ f , : ]