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08.01.2006 at 01:11PM PDT, ID: 21939659
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6.2

Force GSL (GNU Scientific Library) to provide nontrivial solution

Asked by wwfarch in Miscellaneous Programming

Tags:

I have a gsl_matrix* A, a few gsl_vector* v, zeroVector, Atau, and residual. The zeroVector is just a vector with all zero entries. Atau is the tau from QR decomposition and residual is used to store the residual after a least squares solution.

I'd like to solve the system
Av = 0
using a least squares solver. Currently my code does the following:

gsl_linalg_QR_decomp(A, Atau);
gsl_linalg_QR_lssolve(A, Atau, zeroVector, v, residual);

My issue is that I always end up with v as a zero vector. Is there a way to force GSL to find the nontrivial solution to this system?

Thanks,
Matthew ParentStart Free Trial
[+][-]08.01.2006 at 01:51PM PDT, ID: 17228172

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[+][-]08.01.2006 at 04:01PM PDT, ID: 17229095

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[+][-]08.02.2006 at 01:31AM PDT, ID: 17231171

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[+][-]08.02.2006 at 07:44AM PDT, ID: 17233754

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Zone: Miscellaneous Programming
Tags: gsl
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Solution Provided By: NovaDenizen
Participating Experts: 3
Solution Grade: B
 
 
[+][-]08.02.2006 at 10:43AM PDT, ID: 17235524

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[+][-]08.02.2006 at 11:45AM PDT, ID: 17236076

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