[R] qr test?

[Berend Hasselman]

rkevinburton wrote:
> 
> I am testing 'qr' with an admittedly contrived matrix and I am getting
> different results than I am from another package. The matrix that I am
> using is:
> 
> x <- matrix(seq(.1, by=.1, length.out=12), 4)
> 
> So the whole test is:
> 
> x <- matrix(seq(.1, by=.1, length.out=12), 4)
> qr(x)
> 
> 

Which other package?
Have a look at the result of  qr(x,LAPACK=T).
Do svd(x) and you will see that your matrix is ill-conditioned.
Similar results if you do rcond(x).

Berend

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