I have only ever seen this error (-nan) when performing a linear transform from functional to anatomical space are the images were not oriented the same way, or the orientation information in the header was mislabeled. I would check these things...
-----Original Message-----
From: FSL - FMRIB's Software Library [mailto:[log in to unmask]] On Behalf Of Cornelius Werner
Sent: Wednesday, October 12, 2011 5:03 PM
To: [log in to unmask]
Subject: [FSL] Dual Regression - dr_stage1 only "-nan"?!
Hi experts,
I just encountered a strange error: dual regression failed already in
the first stage, yielding only lots of "-nan"s in the stage1 files. I
am somewhat at a loss: I checked all paths and files, everything seems
ok. What could be a reason for such an error?
Thanks in advance,
Cornelius
--
Dr. med. Cornelius J. Werner
Department of Neurology
RWTH Aachen University
Pauwelsstr. 30
52074 Aachen
Germany
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