Hi Mahinda, you need to tell mri_cor2label that this is a surface with the --surf fsaverage lh white You can propagate this label to other subjects using mri_surf2surf.
doug
On 11/04/2012 10:08 PM, Mahinda Yogarajah wrote:
Dear Experts,
I am trying to "back-normalise" significant clusters identified in a qdec analysis (2 groups, thickness as main variable of interest) back into individual subjects so that I can derive cortical statisitcs.
As per previous posts I have been trying to use mri_cor2label but am running into some problems. My processing is as follows:
- Identify file of interest which contains 3 clusters (labelled
1.000000 to 3.000000 as viewed in tksurfer and on qdec text output following analysis) significant using Monte Carlo correction 0.05 - mc-z.abs.th13.sig.ocn.annot
- mri_cor2label --i mc-z.abs.th13.sig.ocn.annot --id 2 --l cluster2
This produces a file called cluster2.label but when I try loading it into tksurfer (tksurfer fsaverage lh inflated - followed by loading of label in menu system) I get the following error message which prevents me from double checking the label:
% ********************0 nonzero vertices found ********************
label stat field identically zero - setting to 1
1890 unassigned vertices in label - building spatial LUT...
assigning vertex numbers to label...
Couldn't assign 1617 vertices.
1617 unassigned vertices in label - building spatial LUT...
assigning vertex numbers to label...
Couldn't assign 1617 vertices.
My questions are:
Why does this occur ?
How can I convert my qdec results (eg. mc-z.abs.th13.sig.ocn.annot
to label files which I can then propagate to all subjects using mri_label2label).
Thanks.
Mahinda
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