R help - Apr 2004 - Help

To whom it may concern:
 
Is there a function that we can use to easily obtain the rank of a matrix in R?
 
Thank you very much.
 
Jason Parcon

		
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On Thu, 29 Apr 2004, Jason Parcon wrote:
> To whom it may concern:
>  Is there a function that we can use to easily obtain the rank of a
> matrix in R?
Yes.  See ?qr.  Note that the `rank' is not really well-defined for a 
numerical matrix due to imprecise representation, and it may well be 
better to look at the SVD (?svd) and consider the sizes of the singular 
values.
> PLEASE do read the posting guide!
http://www.R-project.org/posting-guide.html
PLEASE do!  In particular, use a sensible subject line.

-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595