R devel - Jan 2015 - error code 1 from Lapack routine 'dsyevr'

Hi, 

I got an error message in my program saying 

"Error in eigen(gene_intersection.kernel) : 
  error code 1 from Lapack routine 'dsyevr' 
Execution halted". 

As you see, I was trying to compute the eigenvalues of a matrix but got this
error. Is there anyone who knows what this error means and how I can fix it?
Theoretically the eigenvalues should be nonnegative, if it helps. 

Thank you! 



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On 31/01/2015 14:15, eigen wrote:
> Hi,
>
> I got an error message in my program saying
>
> "Error in eigen(gene_intersection.kernel) :
>    error code 1 from Lapack routine 'dsyevr'
> Execution halted".
>
> As you see, I was trying to compute the eigenvalues of a matrix but got
this
> error. Is there anyone who knows what this error means and how I can fix
it?
The help page for eigen says

Source:

      By default ?eigen? uses the LAPACK routines ?DSYEVR?, ?DGEEV?,
      ?ZHEEV? and ?ZGEEV?

      LAPACK is from <URL: http://www.netlib.org/lapack> and its guide
      is listed in the references.

You need to consult that guide and/or the source code: all I saw at a 
cursory look was

*> \param[out] INFO
*> \verbatim
*>          INFO is INTEGER
*>          = 0:  successful exit
*>          < 0:  if INFO = -i, the i-th argument had an illegal value
*>          > 0:  Internal error
*> \endverbatim

so it means 'internal error'.
> Theoretically the eigenvalues should be nonnegative, if it helps.
>
> Thank you!
-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Emeritus Professor of Applied Statistics, University of Oxford
1 South Parks Road, Oxford OX1 3TG, UK

Thank you for your reply. Do you have any idea of how to get rid of the
errors? I tried Null function to calculate eigenvectors and nearPD to get
approximate positive definite matrix first but they also had errors.



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