Oh duh. Okay, thanks!
Joe
On May 30, 2013, at 5:38 PM, Douglas N Greve greve@nmr.mgh.harvard.edu wrote:
That is a surface file. Each of the 163842 values corresponds to a vertex in the surface. If you want xyz, you need to load in the surface. You can also analyze the data in the native space if that would make it easier (but you can't surface smooth). doug
On 05/30/2013 05:08 PM, Joseph Dien wrote:
I tried using MRIread to look at the contents of the analysis files (using Fressurfer 5.2.0 under OS X 10.8.3 and Matlab 2013a):
mri = MRIread('ces.nii.gz',0);
but I'm getting one-dimensional vectors:
mri
mri =
srcbext: '' analyzehdr: [] bhdr: [] vol: [1x163842 double] niftihdr: [1x1 struct] fspec: 'ces.nii.gz' pwd: '/Volumes/Data/CP1/fsfast/CPA003/bold/CPA.sm05.lh/CS-v-OTHERS' flip_angle: 0 tr: 2000 te: 0 ti: 0 vox2ras0: [4x4 double] volsize: [1 163842 1] height: 1 width: 163842 depth: 1 nframes: 1 vox2ras: [4x4 double] nvoxels: 163842 xsize: 1.0000 ysize: 1.0000 zsize: 1.0000 x_r: -0.9999 x_a: 0.0067 x_s: -0.0150 y_r: 4.1714e-08 y_a: 0.9131 y_s: 0.4078 z_r: -0.0164 z_a: -0.4077 z_s: 0.9130 c_r: -6.8259e+04 c_a: 465.0319 c_s: -995.9002 vox2ras1: [4x4 double] Mdc: [3x3 double] volres: [1.0000 1.0000 1.0000] tkrvox2ras: [4x4 double]
It's fine when I read one of the functional files (f.nii.gz). Am I doing something wrong? Or if it is supposed to be like this, how do I convert to XYZ coordinates? The vox2ras fields are expecting a four-dimensional matrix.
Thanks!
Joe
Joseph Dien, Senior Research Scientist University of Maryland
E-mail: jdien07@mac.com mailto:jdien07@mac.com Phone: 301-226-8848 Fax: 301-226-8811 http://joedien.com//
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Joseph Dien, Senior Research Scientist University of Maryland
E-mail: jdien07@mac.com Phone: 301-226-8848 Fax: 301-226-8811 http://joedien.com//