symmetry

(method of symmetry)
Supported Symmetries
id crystal system  Schoen-  Inter-    Laue     Rotational
                   flies    national  class    axes
1  triclinic       C1       1         -1       1
2  triclinic       Ci       -1        -1       1
3  monoclinic      C2       2         2/m      2
4  monoclinic      Cs       m         2/m      2
5  monoclinic      C2h      2/m       2/m      2
6  orthorhombic    D2       222       mmm      222
7  orthorhombic    C2v      mm2       mmm      222
8  orthorhombic    D2h      mmm       mmm      222
9  tetragonal      C4       4         4/m      4
10 tetragonal      S4       -4        4/m      4
11 tetragonal      C4h      4/m       4/m      4
12 tetragonal      D4       422       4/mmm    422
13 tetragonal      C4v      4mm       4/mmm    422
14 tetragonal      D2d      -42m      4/mmm    422
15 tetragonal      D4h      4/mmm     4/mmm    422
16 trigonal        C3       3         -3       3
17 trigonal        C3i      -3        -3       3
18 trigonal        D3       32        -3m      32
19 trigonal        C3v      3m        -3m      32
20 trigonal        D3d      -3m       -3m      32
21 hexagonal       C6       6         6/m      6
22 hexagonal       C3h      -6        6/m      6
23 hexagonal       C6h      6/m       6/m      6
24 hexagonal       D6       622       6/mmm    622
25 hexagonal       C6v      6mm       6/mmm    622
26 hexagonal       D3h      -6m2      6/mmm    622
27 hexagonal       D6h      6/mmm     6/mmm    622
28 cubic           T        23        m-3      23
29 cubic           Th       m-3       m-3      23
30 cubic           O        432       m-3m     432
31 cubic           Td       -43m      m-3m     432
32 cubic           Oh       m-3m      m-3m     432
Syntax

s = symmetry('param1',val1,'param2',val2)