[pymvpa] Fwd: Data import with pynifti

[Roberto Guidotti]

I'm so interested in the discussion, I hope you are not bored!! ;)

The output of line code you post is:

17.0 19.0
0.0 0.0
0.0 0.0
[and other couple of zeros!!]

So I open file as NiftiImage and append every *.img in a list and then load
into a NiftiDataset!!!

RG



2011/3/29 Yaroslav Halchenko <debian at onerussian.com>

>
> On Tue, 29 Mar 2011, Roberto Guidotti wrote:
> >    I haven't only my images in Talairach space after basic preprocessing
> >    steps (time, motion correction etc.), when I load my dataset I print
> >    scl_* values
> from an image or from a dataset? how do you load them into a dataset?
> (as a list into a single dataset or as a list of datasets which you
> concatenate in 0.4.7 or vstack in 0.6)?
>
> what would be the output if you just run below command on your .img/.hdr
> files at question:
>
> for f in *.img; do python -c "import sys, nifti as n;
> h=n.NiftiImage(sys.argv[1]).header; print h['scl_slope'], h['scl_inter']"
> $f; done
>
> > and I have my first image with the values cited above,
> >    and the rest with 0.0 value. After loading I have to zscore my images
> >    and proceed with other mvpa steps. Am I wrong?
>
> you are doing everything correct -- I am just trying to infer if
> you were were affected before by 'absent scaling' issue
>
> >    So, I have upgraded to 0.6 version!
>
> cool -- there you should be all safe.  if you are still interested we
> could continue above discussion... or just forget -- up to you ;)
>
> --
> =------------------------------------------------------------------=
> Keep in touch                                     www.onerussian.com
> Yaroslav Halchenko                 www.ohloh.net/accounts/yarikoptic
>
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