rank of a matrix
mingan wrote:
how do I check the rank of a matrix ?
say
A= 1 0 0
0 1 0
then rank(A)=2
what is this function?
Well, calculating the rank is from the computational point of view a very hard problem. See ?qr Uwe Ligges
thanks
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
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