[R] Odp: Coding matrix equation

Petr PIKAL
Mon, 11 Apr 2011 08:05:33 -0000

Hi

r-help-bounces at r-project.org napsal dne 11.04.2011 09:43:03:

> Hi all,
>
> I have two matrices:
>
> G<-matrix(c(2.0, 0.5, 0.5, 0.5, 2.0, 0.5, 0.5, 0.5,2.0),3,3)
> P<-matrix(c(1.0, 0.5, 0.5, 0.5, 1.0, 0.5, 0.5, 0.5,1.0),3,3)
>
> and I want to run this equation to get a new matrix F:
>
> F = [P+2G]^-1/2 P [P+2G]^-1/2

Is this what you want?

(P+2*G)^-1/2 * P * (P+2*G)^-1/2

Regards
Petr

>
> Could someone please tell me how to code this in R?
>
> Many thanks in advance for your time.
>
> Best wishes,
> Matt
>
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>
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