[FieldTrip] Wilson Factorization

[Schoffelen, J.M. (Jan Mathijs)]

Mathieu,

Since your question is of relatively poor quality, I can only venture a poor quality guess: it’s likely that your data is rank deficient. The Wilson algorithm involves inversion of matrices, rank deficiency will quickly lead to nans.

Please consult the following link (and references therein) in order to optimize the probability of obtaining a useful answer, and to optimize the goodwill of the FT-community (especially the ‘Ten simple rules…’ are a must read).

http://fieldtrip.fcdonders.nl/discussion_list

Best wishes,
Jan-Mathijs


On Jan 12, 2015, at 4:44 PM, Mathieu Sitko <mathieu.sitko at wanadoo.fr> wrote:

> I have a problem with the convergence of spectral matrix factorization: with a tolerance of 1e-8, all my data (H,S,Z) are NaN values. How could you explain that?
> thank you
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