[Numpy-discussion] syntax for obtaining rank of two columns?

Simon Burton simon at arrowtheory.com
Fri Jun 16 04:40:47 CDT 2006


On Thu, 15 Jun 2006 15:56:56 -0700 (PDT)
JJ <josh8912 at yahoo.com> wrote:

>  In matlab
> the command is quite simple:
> 
> rank([d(:,i),d(:,j)])

you could use the cauchy-schwartz inequality,
which becomes an equality iff the rank above is 1:

http://planetmath.org/encyclopedia/CauchySchwarzInequality.html

Simon.

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