... i.private.dat gives you access to the image data on disk. They are
memory mapped for fast access, but any modifications will be written out
to disk. See the @file_array object for details.
Volkmar
Am Samstag, den 15.03.2008, 12:35 -0500 schrieb Lynne Gauthier:
> 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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--
Volkmar Glauche
-
Department of Neurology [log in to unmask]
Universitaetsklinikum Freiburg Phone 49(0)761-270-5331
Breisacher Str. 64 Fax 49(0)761-270-5416
79106 Freiburg http://fbi.uniklinik-freiburg.de/
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