[R] eigen vector sign reversal

Roger D. Peng rpeng at stat.ucla.edu
Tue Jul 15 19:19:38 CEST 2003

I think at version 1.7.0 R started using LAPACK for its eigen/svd 
routines.  I think using `eigen(x, EISPACK = TRUE)' uses the previous 


Karim Elsawy wrote:

>I've just installed R 1.7.1 under linux red hat
>I noticed sign reversal of eigen vectors ,some of them not all, upon
>using diag function relative to those obtained using R 1.4.1
>this is gonna miss up lots of my previous scripts
>I wonder if there is a way to avoid this.
>best regards
>R-help at stat.math.ethz.ch mailing list

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