if that is fsaverage, then mni and ras should be the same
On 8/30/16 9:37 PM, Dongnandi wrote:
Thanks a lot!
Just want to make sure that the “RAS”(FS cords?) and “MNI Talairach”
is the MNI305 coords.
*发件人:*freesurfer-boun...@nmr.mgh.harvard.edu
[mailto:freesurfer-boun...@nmr.mgh.harvard.edu] *代表 *Douglas Greve
*发送时间:*2016年8月30日21:21
*收件人:*freesurfer@nmr.mgh.harvard.edu
*主题:*Re: [Freesurfer] Questions about surface coordanates
tksurfer always uses the ?h.orig coordinates. Also keep in mind that
the vertex index is 0-based whereas matlab is 1-based. When you click
on a point, you should see something like the following print out
selected vertex 123491 out of 163842
current -39.11 15.65 11.26
orig -55.67 -10.37 19.95
pial 0.00 0.00 0.00
white -55.76 -10.29 19.93
On 8/30/16 5:12 AM, Dongnandi wrote:
Dear Experts,
I tried to extract vertex coordinates information from
‘fsaverage/surf/lh.pial’ file using matlab function ‘read_surf’,
but I found that the coordinates returned by the function are
different from what I saw in tksurfer, here are the screenshots:
The vertex index starts from 0 in tksurfer, so I select the second
elements in matlab. Why is the result different from what has been
shown in tksurfer(also different in freeview)? Which one should I
report?
Is there any way to transform the surface coordinates to the
MNI152 space?
Thank you very much!
Dong
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