The program PROJECTIONS identifies the plane group symmetry of a projection of a space group along a projection direction. The program accepts as input a space group given in any arbitrary setting. The results are expressed in both the given basis of the input space group and the standard setting of the sectional groups.


 OPTION A: Space group number

Please, enter the sequential number of group as given in the
International Tables for Crystallography, Vol. A or 

 OPTION B: Symmetry operations

Enter the generators of the Space Group in the box below, given in any basis of the lattice, as in the example:
x+1/2,y+1/2,z
y+1/3,x+1/4,z+1/4
Assumed lattice translations:
x + 1 , y , z
x , y + 1 , z
x , y , z + 1 


