2009/1/12 Sara Tejedor <[email protected]>:
> which is the best way to calculate the range of a matrix with Gsl?
> I just need the maximum range.
I think you mean rank, not range (both of these words often translate
to the same word in Spanish, although I prefer "contradominio" for the
range of the matrix as a function).
The numerical rank of a matrix is often computed via a singular value
decomposition. Compute the SVD, and then count the number of singular
values that are above machine epsilon. Have a look at
http://www.gnu.org/software/gsl/manual/html_node/Singular-Value-Decomposition.html
HTH,
- Jordi G. H.
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