Hi - NaN values are not allowed - bad John!
Anyway, you can fix these by passing the image through fslmaths and
using the -nan option.
Cheers.
On 20 Nov 2008, at 17:21, Silviu Podariu wrote:
> Aha!
>
> I have tried to view it under Mac and Linux and, for some reason, on
> Mac it
> displays and I see in the fslview window some numerical min/max
> values,
> while in the Linux window I see NaN as min/max values (see
> attachment of
> display snapshot of troubled + another file under Linux).
>
> I also made sure the file was correctly transferred to the Linux
> machine
> (sent it back and forth: Mac -> Linux -> Mac and compared orig vs
> moved
> around versions), which means that some locations are read under
> Linux as
> NaN by fslview for this particular file (which is strange in itself,
> I don't
> have this
> problem with the other three images I tried).
>
> Thank you very much,
> Silviu
>
>
>
> On Wed, 19 Nov 2008 17:02:30 +0000, Steve Smith
> <[log in to unmask]> wrote:
>
>> Hi - does this input image include NIFTI-illegal NaN voxels maybe?
>> If that doesn't explain it, feel free to upload the data:
>> Please upload the files in a single compressed tarfile to
>> http://www.fmrib.ox.ac.uk/cgi-bin/upload.cgi
>> And then email me the upload ID.
>>
>> Cheers.
>>
>>
>>
>>
>> On 18 Nov 2008, at 19:21, Silviu Podariu wrote:
>>
>>> Hello,
>>>
>>> I just installed the latest FSL package on Linux laptop and I
>>> noticed a
>>> strange thing. When doing a skull strip on an SPM produced ws-
>>> structural I
>>> ran into a 'segmentation fault' problem repeatedly, without any
>>> other info.
>>>
>>> Here is the command used:
>>> bet wmstr_k033_33_0.hdr struct_mask -f 0.35 -c 78 96 68
>>>
>>> An interesting fact is that I run into this problem for only one of
>>> the four
>>> subjects I have data on (for the other three it works fine), while
>>> on a Mac
>>> server on which I also have FSL installed the same command works for
>>> this
>>> subject too (as well as for the others).
>>>
>>> I think this may be a bug or something, for the laptop is quite new
>>> and
>>> powerful (Dell Latitude D630, with 2 processors Intel Core 2 Duo
>>> T9300 @
>>> 2.5GHz, running an up to date Ubuntu Hardy Linux distribution, on
>>> 2GB of RAM).
>>>
>>> Any advice on this would be greatly apreciated, thank you,
>>> Silviu Podariu
>>> UNMC
>>> Omaha, NE
>>>
>>>
>>
>>
>> ---------------------------------------------------------------------------
>> Stephen M. Smith, Professor of Biomedical Engineering
>> Associate Director, Oxford University FMRIB Centre
>>
>> FMRIB, JR Hospital, Headington, Oxford OX3 9DU, UK
>> +44 (0) 1865 222726 (fax 222717)
>> [log in to unmask] http://www.fmrib.ox.ac.uk/~steve
>> ---------------------------------------------------------------------------
>
> <okVsBadFslviewDisplay.png>
---------------------------------------------------------------------------
Stephen M. Smith, Professor of Biomedical Engineering
Associate Director, Oxford University FMRIB Centre
FMRIB, JR Hospital, Headington, Oxford OX3 9DU, UK
+44 (0) 1865 222726 (fax 222717)
[log in to unmask] http://www.fmrib.ox.ac.uk/~steve
---------------------------------------------------------------------------
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