i.private.dat stores the actual image greyscale values. i.mat stores
the transformation matrix from voxel to real-world coordinates.
i.private.mat0 stores the old transformation matrix. This will be
different from i.mat if you have applied a transformation (i.e.
realignment) to your data. Otherwise it is the same. From my
experience, i.private.mat remains the same as i.mat, but there are
probably some differences that I am not aware of.
On Mar 14, 2008, at 11:27 PM, MCLAREN, Donald wrote:
> What is being stored in private.dat in the NIFTI header?
>
> i=spm_vol('file');
> i.private.dat seems to contain all the voxel values....
>
> How this different from the actual .img file that stores the data?
>
> ----------------------------------------------------------------------
> -------------------------------
> Which of the following is used by SPM to read in the NIFTI data:
>
> i.mat
> i.private.mat
> i.private.mat0
>
>
> What is the difference between the three?
>
>
>
> --
> Best Regards, Donald McLaren
> =====================
> D.G. McLaren
> University of Wisconsin - Madison
> Neuroscience Training Program
> Tel: (773) 406 2464
> =====================
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