Problem with eigen() and LAPACK

Hi Hans,

Hi all,

when testing the new improvements in the new 1.7.0-version I stumbled 
over the following:

eigen(matrix(c(0,.3,2,.9),2,2))

Error in eigen(matrix(c(0,.3,2,.9),2,2)) :
        LAPACK routine DGEEV gave error code -13

eigen(matrix(c(0,.3,2,.9),2,2),EISPACK=TRUE)

$values
[1]  1.3458236 -0.4458236

$vectors
           [,1]       [,2]
[1,] -1.1436890 -0.9760443
[2,] -0.7696018  0.2175718


My R-version
[1] "R version 1.7.0, 2003-04-16", running on Debian PC.

Am I correct in assumimg that you are using Debian 3.0 aka "stable",
along with the R 1.7.0 package from CRAN?

The example above works fine for me on Debian "testing". R on testing was
built using the (almost) identical configuration at compile-time (gcc 3.0
and tcl/tk 8.3 on stable; 3.2 and 8.4 on testing) and the difference should
therefore be attributable to the libraries and compilers used, which are,
generally speaking, up to a year more recent on testing.

Anyone who has a clue why LAPACK refuses to solve the eigenvalues?

I suspect an problem with the LAPACK libs on the stable release. Matthias
Burger reported a similar problem. We may just have to configure R to not
use Lapack on that older platform unless we find a way to tame this.

Dirk

Don't drink and derive. Alcohol and algebra don't mix.