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September 12, 2018 05:06AM
Dear AFNI users,

I get a 3dDeconvolve WARNING message when I used the '-ortvec bandpass_rall.1D bandpass' option:

*+ WARNING: !! in Signal+Baseline matrix:
 * Largest singular value=2.66744
 * 3 singular values are less than cutoff=2.66744e-07
 * Implies strong collinearity in the matrix columns! 
*+ WARNING: !! in Baseline-only matrix:
 * Largest singular value=2.66744
 * 3 singular values are less than cutoff=2.66744e-07
 * Implies strong collinearity in the matrix columns!


Note that the 3dDeconvolve command is running well without the bandpass filter option. I don't understand what the problem is.
Do you think I could use the -GOFORIT option run it until the end?

Many thanks for any answer.

Carole
Subject Author Posted

Collinearity issue with bandpass

carolege September 12, 2018 05:06AM

Re: Collinearity issue with bandpass

rick reynolds September 12, 2018 12:18PM

Re: Collinearity issue with bandpass

carolege September 17, 2018 09:18AM