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symmetry
Authors: S. Pachkovsky, G. Salnikov
Usage: symmetry [option value ...] [filename]
Valid options are:
-verbose ( 0) Determines verbosity level
All values above 0 are intended for debugging purposes
-maxaxisorder ( 20) Maximum order of rotation axis to look for
-maxoptcycles (200) Maximum allowed number of cycles in symmetry element optimization
-- Terminates option processing
Defaults should be Ok for these:
-same ( 0.001) Atoms are colliding if distance falls below this value
-primary ( 0.05) Initial loose criterion for atom equivalence
-final ( 0.0001) Final criterion for atom equivalence
-maxoptstep ( 0.5) Largest step allowed in symmetry element optimization
-minoptstep ( 1e-07) Termination criterion in symmetry element optimization
-gradstep ( 1e-07) Finite step used in numeric gradient evaluation
-minchange ( 1e-10) Minimum allowed change in target function
-minchgcycles ( 5) Number of minchange cycles before optimization stops
-maxuniq Reorient molecule preferring more unique atoms
-minuniq (default) Reorient molecule preferring less unique atoms
-symmplane (all) Symmetrize atoms according to this plane number only
-symmaxis (all) Symmetrize atoms according to this axis number only
-symmimproper (all) Symmetrize atoms according to this improper axis number only
-symmcenter (all) Symmetrize atoms according to this inversion center number only
-na Prefer non-abelian symmetry elements for reorientation
-minaxis Prefer lower order axes for reorientation
(use together with -na for tetrahedral groups)
Input is expected in the following format:
number_of_atoms
AtomicNumber X Y Z
...
Note that only primitive rotations will be reported
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Download source
© S. Pachkovsky, G. Salnikov
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