(self, j)
return idx
Get the starting index of the velocity data for a give joint in a

    velocity array.
Get the starting index of the velocity data for a give joint in a
Get the starting index of the velocity data for a give joint in a
def _get_joint_vel_idx(self, j):
    """Get the starting index of the velocity data for a give joint in a

    velocity array.
    """
    idx = self._joint_vel_idx[j]
    return idx
def _get_joint_vel_idx ( self , j ) : idx = self . _joint_vel_idx [ j ] return idx