Figure 2
Unit cell of a two-dimensional rectangular lattice with a symmetry-adapted grid of N1 = 6 and N2 = 10. (a) More favourable, and (b) less favourable choices of the positions of the grid points defining [equation (3)]. The symmetry elements of the space group p2mm are indicated. Voxels (pixels) that are equivalent by symmetry are indicated by the same shading. |