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TREOR , a semi‐exhaustive trial‐and‐error powder indexing program for all symmetries
Author(s) -
Werner P.E.,
Eriksson L.,
Westdahl M.
Publication year - 1985
Publication title -
journal of applied crystallography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.429
H-Index - 162
ISSN - 1600-5767
DOI - 10.1107/s0021889885010512
Subject(s) - monoclinic crystal system , triclinic crystal system , orthorhombic crystal system , search engine indexing , tetragonal crystal system , homogeneous space , hexagonal crystal system , crystallography , computer science , mathematics , information retrieval , geometry , chemistry , crystal structure
An indexing program, TREOR , mainly based on trial‐and‐error methods is described. The program contains separate routines for cubic, tetragonal, hexagonal, orthorhombic, monoclinic and triclinic symmetries. Ten years usage has been analysed to improve the original program. For monoclinic indexing a specific short‐axis test has been developed. The over‐all success rate of the program has been found to be better than 90%, and considerably more for orthorhombic and higher symmetries.