An intelligent genetic algorithm based crystal-indexing program, GAMATCH, is described by means of which the Miller indices of the relevant planes can be unambiguously identified using a set of interplanar angles. A two-step divide and conquer strategy is employed and is found to speed up convergence to the global solution. The program was tested using both hypothetical and centimetre-sized triphenylmethyl chloride crystals. The results obtained were compared to the expected indices and excellent agreement was noted.
See KIN YIP TAM and R.G COMPTON, Journal of Applied Crystallography 25, (1995), 640 for the full article.
F77 source code
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