Dear Michele,

I cannot find anything wrong with your bvec and bval files.
Seeing as you had an errormessage related to the dwi (the one about the dwi_frame.nii.gz): Did you check that your dwi data have the same amount of volumes as entries in bvec and bval?

Good luck,
Barbara


On 28/08/2014 22:47, Michele Cavallari wrote:
Hi,
I'm having some problems with the first command of the tracula pipeline. 
I am using FreeSurfer 5.3 on a mac (OS 10.9).
The problem seems to be related to the bvecs file. I received the following
error message: 
niiRead(): error opening file /path/to/dmri/dwi_frame.nii.gz

I read some threads available on your website, but couldn't figured out a
solution yet. I tried to organize the bvecs in columns, as opposed to the
original configuration in rows. By doing that and re-launching the
pre-processing command I obtained a differente error message:
Error: bvecs and bvals don't have the same number of entries

The original bvals and bvecs files seem to have the same numbers of entries
to me. But the bvecs file produced by the processing - both the bvecs.norot
and the bvecs files in the dmri folder - don't have all the information of
the vectors.

I am enclosing a zip folder with attachments:
1) original bvecs and bvals files organized in rows and columns
2) bvecs and bvals files generated by tracula
3) error logs

Let me know if you need any other information.
Thanks in advance for your help.



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