[R-SIG-Mac] eigen() with complex matrices

[William Revelle]

Tony and Robin,
   On a macbook pro with R-2.4.1  with R installed from binaries, I do 
not have the problem.
Bill

At 12:31 PM +0000 2/22/07, Tony Chiang wrote:
>Hi Robin,
>
>I have 2.5 (pretty recent) installed my my mac-mini and I don't get the
>error. I do not run R-2.4.1 so I cannot see if I can reproduce your error. I
>build R from source rather than using the universal binary though, so try
>that and see if that helps. Can anyone with R-2.4.1 reproduce this error?
>
>  > A <- matrix(c(1,0.2+0.1i,0.2-0.1i,1),2,2)
>>  A
>          [,1]     [,2]
>[1,] 1.0+0.0i 0.2-0.1i
>[2,] 0.2+0.1i 1.0+0.0i
>  > eigen(A)
>$values
>[1] 1.2236068 0.7763932
>
>$vectors
>                       [,1]                  [,2]
>[1,] -0.7071068+0.0000000i -0.7071068+0.0000000i
>[2,] -0.6324555-0.3162278i  0.6324555+0.3162278i
>
>>  sessionInfo()
>R version 2.5.0 Under development (unstable) (2007-02-08 r40671)
>i386-apple-darwin8.8.1
>
>locale:
>C
>
>attached base packages:
>[1] "stats"     "graphics"  "grDevices" "utils"     "datasets"  "methods"
>[7] "base"
>>
>
>Cheers,
>--Tony
>
>On 2/22/07, Robin Hankin <r.hankin at noc.soton.ac.uk> wrote:
>>
>>  Hello
>>
>>  I just now get a bus error with R-2.4.1[Universal binary downloaded
>>  from CRAN just now], and also with (recently compiled) R-2.5.0.
>>  I have Xcode 2.4.1.
>>
>>
>>
>>  Under R-2.4.1:
>>
>>
>>  octopus:~/scratch% R --vanilla
>>
>>  R version 2.4.1 (2006-12-18)
>>  Copyright (C) 2006 The R Foundation for Statistical Computing
>>  ISBN 3-900051-07-0
>>
>>  [snip]
>>
>>  'help.start()' for an HTML browser interface to help.
>>  Type 'q()' to quit R.
>>
>>
>>  >
>>  > A <- matrix(c(1,0.2+0.1i,0.2-0.1i,1),2,2)
>>  > eigen(A)
>>
>>  *** caught bus error ***
>>  address 0x1, cause 'invalid alignment'
>>
>>  Traceback:
>>  1: .Call("La_rs_cmplx", x, only.values, PACKAGE = "base")
>>  2: eigen(A)
>>
>>  Possible actions:
>>  1: abort (with core dump)
>>  2: normal R exit
>>  3: exit R without saving workspace
>>  4: exit R saving workspace
>>  Selection:
>  >
>>
>>
>>  the same thing happens with R-2.5.0
>>
>>  Anyone?
>>
>>
>>
>>
>>
>>
>>
>>  --
>>  Robin Hankin
>>  Uncertainty Analyst
>>  National Oceanography Centre, Southampton
>>  European Way, Southampton SO14 3ZH, UK
>>    tel  023-8059-7743
>>
>>  _______________________________________________
>>  R-SIG-Mac mailing list
>>  R-SIG-Mac at stat.math.ethz.ch
>>  https://stat.ethz.ch/mailman/listinfo/r-sig-mac
>>
>
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>
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-- 
William Revelle		http://personality-project.org/revelle.html
Professor			http://personality-project.org/personality.html
Department of Psychology       http://www.wcas.northwestern.edu/psych/
Northwestern University	http://www.northwestern.edu/
Use R for statistics:                 http://personality-project.org/r