Re: [R] Computing the rank of a matrix.

From: <apjaworski_at_mmm.com>
Date: Fri 06 Apr 2007 - 15:07:06 GMT


How about

      qr(A)$rank

or perhaps

      qr(A, LAPACK=TRUE)$rank

Cheers,

Andy



Andy Jaworski
518-1-01
Process Laboratory
3M Corporate Research Laboratory

E-mail: apjaworski@mmm.com
Tel: (651) 733-6092
Fax: (651) 736-3122
                                                                           
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                                       [R] Computing the rank of a matrix. 
                                                                           
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    Hi! Maybe this is a silly question, but I need the column rank (http://en.wikipedia.org/wiki/Rank_matrix) of a matrix and R function 'rank()' only gives me the ordering of the elements of my matrix.

    How can I compute the column rank of a matrix? Is there not an R equivalent to Matlab's 'rank()'?

    I've been browsing for a time now and I can't find anything, so any help will be greatly appreciated. Best regards!


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https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. Received on Sat Apr 07 02:23:08 2007

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