We need the description of sampling from 3D data on the surface
(mri_vol2surf). We are specifically interested how the position is
determined in 3D, when the fraction/distance from wm surface is announced.
Is it e.g. the normal from one node (resulting in some overlap of 3D
projections at the botto
Dear surfers,
Using [faces verts] = freesurfer_read_surf(surface) gives me the face
list and vertices coordinates. I assume that using different surface
(e.g. lh.white and lh.sphere) changes only the coordinates and the face
list remains the same (?). What about with flattened patch? I convert
ascii file is:
>
>
>
> .
> .
> .
>
> where all the indices are 0-based, and the entries are the 3
> vertices that make up that triangular face. Note that *only* the faces and
> vertices that have not been removed by cutting are in the patch file.
>
> cheers
> Bruce
>
>
>
ded from the patch you can't just compare say the 5th
> faces in each - you have to look up the index (given in the patch file) and
> use that to find the corresponding face in the full surface file.
>
> cheers
> Bruce
>
>
> On Thu, 9 Feb 2012, Tuomas Tolvanen wrote:
>
&
Dear freesurfer experts,
I was wondering that what is the logic or technique how mri_vol2surf
works? I mean that I have an spmT-image that contains T-values for voxels
and I want to visualize these activations on a surface. The number of
voxels with value > 3 is ~60. When I check the number of ve
