|
International
Tables for Crystallography Volume G Definition and exchange of crystallographic data Edited by J. R. Hester and B. McMahon © International Union of Crystallography 2026 |
International Tables for Crystallography (2026). Vol. G. Early view chapter
https://doi.org/10.1107/97809553602060001011 Chapter 4.2 Core dictionary (coreCIF) |
Core dictionary version 3.3.0
_function.SymKey
Name:_function.SymKey
Definition:
The function
m = SymKey( s )
returns an integer index to the Seitz matrices from the character
string of the form 'n_pqr'.
Type: Integer
Units: none
The permitted range is 1 → 192
Evaluation method:
Function SymKey( s :[Single, Symop]) { # symop string
If (s == NULL) n = 1
Else n = AtoI(s[0])
SymKey = n # index from 1
}
Category:
function
