Abstract The program package VEC (Visual computing in Electron Crystallography) has been revised such that (i) a program converting one-line symbols to two-line symbols of (3+1)-dimensional superspace groups has been incorporated into VEC so that the latter can interpret both kinds of symbols; (ii) a bug in calculating structure factors of one-dimensionally incommensurate modulated crystals has been fixed. The correction has been verified by successfully matching the experimental electron microscopy image of an incommensurate crystal with a series of simulated images. The precompiled revised version of VEC and relevant materials are available on the Web at http://cryst.iphy.ac.cn.
Received: 19 February 2009
Revised: 02 March 2009
Accepted manuscript online:
PACS:
07.05.Bx
(Computer systems: hardware, operating systems, computer languages, and utilities)
(Microscopy of surfaces, interfaces, and thin films)
Fund: Project supported by the National
Basic Research Program of China (Grant No 2006CB601001) and the
National Natural Science Foundation
of China (Grant No 50672124).
Cite this article:
Li Xue-Ming(李雪明), Li Fang-Hua(李方华), and Fan Hai-Fu(范海福) A revised version of the program VEC (visual computing in electron crystallography) 2009 Chin. Phys. B 18 2459
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