Sorry,
I do not seem to see the light.
I have a point in volume index coordinates [128.9 172 62.9 1] and need to
obtain the surface/vertex RAS coordinates (not volume RAS).
matlab path
/usr/local/freesurfer/subjects/subjid/mri
if I type
tkrRAS = Torig*[128.9 172 62.9 1]'
it tells me Torig undefi
Hi Octavian, these types of things are generally not difficult to
program, but they can be difficult to get set up correctly. If you do a
search for "coordinates" on our wiki, it will take you to a page that
explains the process.
doug
On 09/26/2012 02:57 PM, octavian lie wrote:
> Dear all,
> I
Dear all,
I need to transform my electrode FS volume index coordinates stored in a
.mat file in surface RAS coordinates. Do you know of any matlab code that
could be shared to accomplish this and generate another .mat with RAS
coordinates?
Thank you,
Octavian Lie.
*To follow up and simplify for a
Dear all,
I need to transform my electrode FS volume index coordinates stored in a
.mat file (see attached) in surface RAS coordinates. Do you know of any
matlab code that could be shared to accomplish this and generate another
.mat with RAS coordinates?
Thank you,
Octavian Lie.
trodes.mat
Des
If you have the col row and slice of a voxel, then
mni305xyz = X*S*crs
where crs = [col row slice 1]'
X = matrix from subject/mri/transforms/talairach.xfm
S = matrix from "mri_info --vox2ras orig.mgz"
Note that these coordinates are for MNI305 space.
doug
Tianyi Qian wrote:
> Dear Freesurfer exper
Dear Freesurfer experts,
How can I transfer the coordinate in individual space into MNI space. I
don't want to transfer the whole volume, I only need to transfer the
coordinate of some points.
Thanks,
--
Tianyi Qian
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Well, if the volumes do not line up, then you're register.dat is wrong.
Use tkregister2 to register the original functinoal to the anatomical
(use the --regheader the first time), then use mri_vol2vol to resample
the functional into anat space (make sure to use the --invxfm flag with
vol2vol)
Hello,
on behalf of a collegue who has not yet registered for the freesurfer
mailing list I want to send you the questions below.
Thanks for your help
Claus
---
Hi,
we are currently trying to spatially transform functional d
