code: def mm_to_voxcoord(cm, x, y, z):
      '''
      Parameters
      ----------
      cm: nipy.core.reference.coordinate_map.CoordinateMap
  
      x, y, z: floats
          Physical coordinates
  
      Returns
      -------
      Triplet with 3D voxel coordinates
      '''
      try:
          vox = cm.inverse()([x, y, z])
      except Exception as exc:
          raise Exception('Error on converting coordinates') from exc
      else:
          return vof mm_to_voxcoord(cm, x, y, z):
      '''
      Parameters
      ----------
      cm: nipy.core.reference.coordinate_map.CoordinateMap
  
      x, y, z: floats
          Physical coordinates
  
      Returns
      -------
      Triplet with 3D voxel coordinates
      '''
      try:
          vox = cm.inverse()([x, y, z])
      except Exception as exc:
          raise Exception('Error on converting coordinates') from exc
      else:
          return vox
docs: Parameters
      ----------
      cm: nipy.core.reference.coordinate_map.CoordinateMap
  
      x, y, z: floats
          Physical coordinates
  
      Returns
      -------
      Triplet with 3D voxel coordinates