[R-SIG-Mac] problem with eigen() ??

[Don MacQueen]

Whether or not this is a Mac issue, I would suggest upgrading R to 1.8.0.

-Don

>  eigen(diag(rep(1,5)))$val
[1] 1 1 1 1 1

>  version
          _                       
platform powerpc-apple-darwin6.7.5
arch     powerpc                 
os       darwin6.7.5             
system   powerpc, darwin6.7.5    
status   Patched                 
major    1                       
minor    8.0                     
year     2003                    
month    10                      
day      13                      
language R                       


At 10:12 AM -0500 10/17/03, Paul Rathouz wrote:
>Hi All -- I am running a dual processor G4 with R v 1.6.2 for X11 which I
>installed from fink.  Look what the eigen() function produces.  Am I
>thinking about this wrong, or should  all of the eigen values be 1? -- pr
>
>-----------------------------
>>  diag(rep(1,3))
>      [,1] [,2] [,3]
>[1,]    1    0    0
>[2,]    0    1    0
>[3,]    0    0    1
>>  diag(rep(1,4))
>      [,1] [,2] [,3] [,4]
>[1,]    1    0    0    0
>[2,]    0    1    0    0
>[3,]    0    0    1    0
>[4,]    0    0    0    1
>>  diag(rep(1,5))
>      [,1] [,2] [,3] [,4] [,5]
>[1,]    1    0    0    0    0
>[2,]    0    1    0    0    0
>[3,]    0    0    1    0    0
>[4,]    0    0    0    1    0
>[5,]    0    0    0    0    1
>>
>  > eigen(diag(rep(1,5)))$val
>[1] 1 1 1 1 0
>>  eigen(diag(rep(1,14)))$val
>  [1] 1 1 1 1 1 1 1 1 1 1 1 1 0 0
>>  eigen(diag(rep(1,15)))$val
>  [1] 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0
>>  eigen(diag(rep(1,16)))$val
>  [1] 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
>>  eigen(diag(rep(1,17)))$val
>  [1] 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0
>>  eigen(diag(rep(1,20)))$val
>  [1] 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
>>  eigen(diag(rep(1,22)))$val
>  [1] 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0
>>
>>  q("no")
>-----------------------------
>
>==========================================================================
>Paul Rathouz, Asst. Professor        ph   773-834-1970
>Dept. of Health Studies, Rm. W-264   fax  773-702-1979
>University of Chicago                prathouz at health.bsd.uchicago.edu
>5841 S. Maryland Ave. MC 2007
>Chicago, IL  60637
>
>_______________________________________________
>R-SIG-Mac mailing list
>R-SIG-Mac at stat.math.ethz.ch
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-- 
--------------------------------------
Don MacQueen
Environmental Protection Department
Lawrence Livermore National Laboratory
Livermore, CA, USA