Hi,
Fslmerge is in the latest version of FSL whereas avwmerge is in earlier
versions. You could navigate to the data directory with the commandline and
try running bedpostx_datacheck and post that output here.
Peace,
Matt.
-----Original Message-----
From: FSL - FMRIB's Software Library [mailto:[log in to unmask]] On Behalf
Of Patrick Hales
Sent: Monday, October 15, 2007 6:36 AM
To: [log in to unmask]
Subject: Re: [FSL] Problem with DTIFit
Hi
Thanks for that. The command 'fslmerge' isn't recognized for some
reason, however, I have been able to make my 4D data file using
'avwmerge' instead. Unfortunately, when I try to process the data in
DTIFit, I now get the error message: "Error: child killed: bus
error". Would you be able to tell me how to fix this?
Thanks very much for your help
Patrick
On 15 Oct 2007, at 11:14, Tim Behrens wrote:
> You need to merge your data from different diffusion directions
> into a single 4D nifti file - you can use fslmerge to do this.
>
> T
> On 15 Oct 2007, at 09:52, Patrick Hales wrote:
>
>> Hi
>>
>> This is the first time I have tried using FSL, and I am trying to
>> get the DTIFit program to work. I have
>> a series of diffusion weighted images, each of which are stored as
>> individual fid files (created using
>> Varian's VnmrJ software). There are seven images in total, one
>> with b=0 and 6 with diffusion
>> gradients applied in non co-linear directions. I have converted
>> each of these into Nifti format, and
>> stored them all in a directory. I used FSLview to create my binary
>> mask, and have created text files
>> with my gradient directions (all normalized to unit length), and
>> my b-values (in units of s/mm2). In
>> the DTIFit program, I have selected 'specify input files
>> manually', and supplied it with the directory
>> containing my nifti files, and the filenames of my gradients and b-
>> values text files.
>>
>> When I press 'go', I get a number of error messages, such as:
>> 'ERROR: nifti_image_read(....directory
>> name....)can't open header file', 'ERROR: nifti_image_open
>> (...):bad header info', 'Error: failed to open
>> file', etc. I get the same errors when I try it with analyze files.
>>
>> Would you be able to tell me what I'm doing wrong? Thanks very much
>>
>> Patrick Hales
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