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Hi Jesper, hi Niels, where is ffr to be found? Cheers, Andreas Von: Jesper Andersson <[log in to unmask]> Antworten an: FSL - FMRIB's Software Library <[log in to unmask]> Datum: Montag, 2. Juni 2014 12:50 An: <[log in to unmask]> Betreff: Re: [FSL] Affine matrix inside warp file HI there Niels, FnirtFileReader ffr(³my fnirt output²); NEWMAT::Matrix aff = ffr.AffineMat(); Good luck Jesper On 2 Jun 2014, at 11:42, Niels Bergsland <[log in to unmask]> wrote: > Hi FSL developers, > I'm guessing this question is mostly addressed to Jesper, but input from > anyone else is of course appreciated! > > Jesper wrote in an email on 12/1/10 (Subject: Understanding fnirt > displacements): > > "there is an affine matrix (that which you supplied to fnirt as a starting > guess) "hidden" inside the header of the warp file" > > I need to extract this matrix. I took a look at the FNIRT source code; I can > write something to pull it out, but figured I'd ask if this was already > implemented. > > Thanks! > > > -- > Niels Bergsland > Integration Director > Buffalo Neuroimaging Analysis Center > 100 High St. Buffalo NY 14203 > [log in to unmask] <mailto:[log in to unmask]>