FW: [Rd] eigen() error: R Version 1.6.1 on Mac OS X (PR#2550)

[Jeffrey.S.Whitaker at noaa.gov]

Dan:  Do you by any chance have atlas installed?  My guess is that when
you compile it with fink it links the atlas lapack libs, but when you
compile it yourself it links Apple's vecLib.  I'll look into it.  In the
meantime, could you run otool -L on R.bin (the one you compiled yourself)?

-Jeff

On Wed, 5 Mar 2003, Daniel E. Weeks wrote:

> Actually, I only get the problem if I use R Version 1.6.2 as automatically
> installed by 'fink'.  If I download the source directly myself for Version
> 1.6.2 from CRAN and compile it, then I get the proper eigenvalues.  Seems
> strange to me - I thought that the source code in the fink repository should
> be identical to that at CRAN?
>
> -- Dan --
>
> ------ Forwarded Message
> From: Daniel E. Weeks <dweeks at watson.hgen.pitt.edu>
> Date: Wed, 05 Mar 2003 16:09:48 -0500
> To: Stefano Iacus <jago at mclink.it>
> Cc: <R-devel at stat.math.ethz.ch>
> Subject: Re: [Rd] eigen() error: R Version 1.6.1 on Mac OS X (PR#2550)
>
> Dear Stefano,
>
> Yes, I have updated to R Version 1.6.2  (2003-01-10), running it in a
> Terminal window under Darwin Kernel Version 6.4.
>
> And, while La.eigen() appears to work fine, I still have the same problem
> with eigen():
>
> > x
>      X1    X2    X3    X4    X5
> 1 3.240 2.592 2.592 2.592 2.592
> 2 2.592 3.240 2.592 2.592 2.592
> 3 2.592 2.592 3.240 2.592 2.592
> 4 2.592 2.592 2.592 3.240 2.592
> 5 2.592 2.592 2.592 2.592 3.240
> > La.eigen(x)$values
> [1] 13.608  0.648  0.648  0.648  0.648
> > eigen(x)$values
> [1] 13.123930  0.648000  0.648000  0.648000 -1.732930
>
> I was hoping that updating to Version 1.6.2 would make my bug go away.
>
> But if you can not reproduce this bug, then what is it about my system that
> is different from yours?
>
> Thank you,
>   -- Dan --
>
> On 2/14/03 4:37 PM, Stefano Iacus at jago at mclink.it wrote:
>
> > Under Darwin R 1.6.2 and R-1.6.1 I get
> >
> >> sg
> >      [,1]  [,2]  [,3]  [,4]  [,5]
> > [1,] 3.240 2.592 2.592 2.592 2.592
> > [2,] 2.592 3.240 2.592 2.592 2.592
> > [3,] 2.592 2.592 3.240 2.592 2.592
> > [4,] 2.592 2.592 2.592 3.240 2.592
> > [5,] 2.592 2.592 2.592 2.592 3.240
> >> eigen(sg)$values
> > [1] 13.608  0.648  0.648  0.648  0.648
> >
> > as well as under Carbon R 1.6.1 and 1.6.2
> >
> > I cannot reproduce your behaviour.
> >
> > stefano
> >
> >
> >
> >
> > On Venerdì, feb 14, 2003, at 21:37 Europe/Rome,
> > dweeks at watson.hgen.pitt.edu wrote:
> >
> >> Consider this matrix:
> >>
> >>> sg
> >>      X1    X2    X3    X4    X5
> >> 1 3.240 2.592 2.592 2.592 2.592
> >> 2 2.592 3.240 2.592 2.592 2.592
> >> 3 2.592 2.592 3.240 2.592 2.592
> >> 4 2.592 2.592 2.592 3.240 2.592
> >> 5 2.592 2.592 2.592 2.592 3.240
> >>
> >> If I compute the eigenvalues of the 'sg' matrix using R Version 1.5.0
> >> (2002-04-29) under Linux (or using Version 1.4.0  (2001-12-19) under
> >> Solaris), I obtain:
> >>
> >>> eigen(sg)
> >> $values
> >> [1] 13.608  0.648  0.648  0.648  0.648
> >>
> >> I also obtain the same eigenvalues under R Version 1.5.1  (2002-06-17)
> >> under
> >> Mac OS X 10.2.3.
> >>
> >> However, if I compute the eigenvalues of the 'sg' matrix using R
> >> Version
> >> 1.6.1  (2002-11-01) under Mac OS X 10.2.3, I obtain a different answer:
> >>
> >>> eigen(sg)
> >> $values
> >> [1] 13.123930  0.648000  0.648000  0.648000 -1.732930
> >>> det(sg)
> >> [1] 2.399354
> >>> det(sg,method="eigenvalues")
> >> [1] -7.312317
> >>
> >>
> >> Thanks,
> >>  -- Dan --
> >>
> >> ______________________________________________
> >> R-devel at stat.math.ethz.ch mailing list
> >> http://www.stat.math.ethz.ch/mailman/listinfo/r-devel
> >>
> >
> >
>
> ------ End of Forwarded Message
>

-- 
Jeffrey S. Whitaker         Phone : (303)497-6313
NOAA/OAR/CDC  R/CDC1        FAX   : (303)497-6449
325 Broadway                Web   : http://www.cdc.noaa.gov/~jsw
Boulder, CO, USA 80305-3328 Office: Skaggs Research Cntr 1D-124