code: def create_map(self, pix):
          
          k0 = self._m0.shift_to_coords(pix)
          k1 = self._m1.shift_to_coords(pix)
  
          k0[np.isfinite(k1)] = k1[np.isfinite(k1)]
          k0[~np.isfinite(k0)] = 0
          return k0
docs: Create a new map with reference pixel coordinates shifted
          to the pixel coordinates ``pix``.
  
          Parameters
          ----------
          pix : `~numpy.ndarray`
              Reference pixel of new map.
  
          Returns
          -------
          out_map : `~numpy.ndarray`
              The shifted map.