From: Huntsinger, Reid <reid_huntsinger_at_merck.com>

Date: Thu 05 May 2005 - 03:18:23 EST

https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide!

http://www.R-project.org/posting-guide.html

R-help@stat.math.ethz.ch mailing list

https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Thu May 05 03:49:33 2005

Date: Thu 05 May 2005 - 03:18:23 EST

> hilbert <- function(n) { i <- 1:n; 1 / outer(i - 1, i, "+") }

> qr(hilbert(9))$rank

[1] 7

but it's actually an invertible 9 x 9 matrix.

-----Original Message-----

From: r-help-bounces@stat.math.ethz.ch

[mailto:r-help-bounces@stat.math.ethz.ch] On Behalf Of mingan
Sent: Wednesday, May 04, 2005 11:54 AM

To: r-help@stat.math.ethz.ch

Subject: [R] rank of a matrix

how do I check the rank of a matrix ?

I did try help.search("rank"), but all the returned help information seem irrelevant to what I want.

I would like to know how people search for help information like this.

rank(base) Sample Ranks SignRank(stats) Distribution of the Wilcoxon Signed Rank Statistic Wilcoxon(stats) Distribution of the Wilcoxon Rank Sum Statistic friedman.test(stats) Friedman Rank Sum Test kruskal.test(stats) Kruskal-Wallis Rank Sum Test pairwise.wilcox.test(stats) Pairwise Wilcoxon rank sum tests wilcox.test(stats) Wilcoxon Rank Sum and Signed Rank Tests ______________________________________________R-help@stat.math.ethz.ch mailing list

https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide!

http://www.R-project.org/posting-guide.html

R-help@stat.math.ethz.ch mailing list

https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Thu May 05 03:49:33 2005

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