[pymvpa] it is Not gizpped file

[Yaroslav Halchenko]

99% guarantee that the answer is simple:  FMRIFile is "Not a gzipped file" ;-)

what is the output of
file '/media/caifei/GSP1RMCULFR/s1/standard2diff_mask5.nii.gz'
?

most probably it is just a .nii with someone slapped a suffix .gz to it
without actually compressing using .gz

On Wed, 20 Aug 2014, cfygj wrote:

>    Hi all,
>    When I conduct some MVPA, some error information emerged. Would you tell
>    me how to address this problem. The attachment is my mask used in PyMVPA
>    scripts.
>    Loading dataset...
>    using label file:
>    /media/caifei/GSP1RMCULFR/attributes/bijiao/s1/attributes.txt
>    Traceback (most recent call last):
>      File "mvpa_classifier.py", line 33, in <module>
>        ds = fmri_dataset(samples=FMRIFile, targets=attrs.targets,
>    chunks=attrs.chunks, mask =
>    ('/media/caifei/GSP1RMCULFR/s1/standard2diff_mask5.nii.gz'))
>      File "/usr/lib/python2.7/dist-packages/mvpa2/datasets/mri.py", line 235,
>    in fmri_dataset
>        maskimg = _load_anyimg(mask)
>      File "/usr/lib/python2.7/dist-packages/mvpa2/datasets/mri.py", line 364,
>    in _load_anyimg
>        data = _img2data(src)
>      File "/usr/lib/python2.7/dist-packages/mvpa2/datasets/mri.py", line 60,
>    in _img2data
>        img = nibabel.load(src)
>      File "/usr/lib/pymodules/python2.7/nibabel/loadsave.py", line 54, in
>    load
>        return klass.from_filename(filename)
>      File "/usr/lib/pymodules/python2.7/nibabel/spatialimages.py", line 411,
>    in from_filename
>        return klass.from_file_map(file_map)
>      File "/usr/lib/pymodules/python2.7/nibabel/analyze.py", line 870, in
>    from_file_map
>        header = klass.header_class.from_fileobj(hdrf)
>      File "/usr/lib/pymodules/python2.7/nibabel/nifti1.py", line 568, in
>    from_fileobj
>        raw_str = fileobj.read(klass.template_dtype.itemsize)
>      File "/usr/lib/python2.7/gzip.py", line 261, in read
>        self._read(readsize)
>      File "/usr/lib/python2.7/gzip.py", line 296, in _read
>        self._read_gzip_header()
>      File "/usr/lib/python2.7/gzip.py", line 190, in _read_gzip_header
>        raise IOError, 'Not a gzipped file'
>    IOError: Not a gzipped file

> [-- octet-filter file type: "Python script, ASCII text executable" --]


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-- 
Yaroslav O. Halchenko, Ph.D.
http://neuro.debian.net http://www.pymvpa.org http://www.fail2ban.org
Research Scientist,            Psychological and Brain Sciences Dept.
Dartmouth College, 419 Moore Hall, Hinman Box 6207, Hanover, NH 03755
Phone: +1 (603) 646-9834                       Fax: +1 (603) 646-1419
WWW:   http://www.linkedin.com/in/yarik