code: def to_array(self, values):
          r
          if sp.shape(values)[0] > self.num_pores('internal'):
              raise Exception('The array shape does not match the network')
          Ps = sp.array(self['pore.index'][self.pores('internal')], dtype=int)
          arr = sp.ones(self._shape)*sp.nan
          ind = sp.unravel_index(Ps, self._shape)
          arr[ind[0], ind[1], ind[2]] = values
          return arr
docs: r"""
          Converts the values to a rectangular array with the same shape as the
          network
  
          Parameters
          ----------
          values : array_like
              An Np-long array of values to convert to
  
          Notes
          -----
          This method can break on networks that have had boundaries added.  It
          will usually work IF the given values came only from 'internal'
          pores.