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perms

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perms

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06 Mar 2006 (Updated )

even, odd, cyclical, unique permutations of a set of vectors

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This file was selected as MATLAB Central Pick of the Week

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Description

Generate permutations of a set of vectors under flag control. The flags are 'all' (n factorial), even', 'odd', 'cycles', 'signs'. Combinations can be used. The flag 'unique' will remove duplicate entries. This file is a compatible extension of MATLAB perms(vec) where vec is a row vector. See also uniqueperms FEX # 18918.

Acknowledgements

This file inspired Hyperbolic Polynomial Toolbox (Hpt), Polytopes, and Tumbling Bucky Ball.

MATLAB release MATLAB 7.2 (R2006a)
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Comments and Ratings (2)
23 Sep 2011 Bill McKeeman

The version of perms has a bug. It sometimes gives the even permutations instead of the odd permutations and vice versa. It has been corrected and reissued as FX32978. This version, FX10237 should soon be deleted.

30 Jan 2009 Rashid Iqbal

Dear

can you please teach me about the dmperm function which calculate the permulation of adajancy matrix.
Please explain this function with example.

Regards,

Rashid

Updates
08 Mar 2006

Clean up HTML documentation

17 Mar 2006

clean up Mlint messages

26 Feb 2008

The MATLAB perms turns an N-D matrix into a vector before generating permutations. This perms accepts a matrix of input vectors. I added a comment. Also FEX uniqueperms #18918 is faster and less demanding of memory for the cases it handles.

11 Apr 2009

Fix problem with R2009a, follow some MLINT advice

27 May 2009

license change

27 May 2009

fixed botched submission

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