You are right. I found out the same using the wiki http://surfer.nmr.mgh.harvard.edu/fswiki/LabelsClutsAnnotationFiles. However, I discovered that read_annotation.m reads some labels as zeros and 'misses' labels 1639705 and 3294840 defined in the enclosed LUT while reading for example lh.aparc.annot resulting from a standard execution of the pipeline (recon-all -all). 

Do you have any thoughts on this? Is this a bug (either in the stored .annot or during the reading process)?

Thanks for sharing your thoughts,

Best,
Martijn




On Thu, Dec 22, 2011 at 1:20 PM, Thomas Yeo <ythomas@csail.mit.edu> wrote:
Hi, I am not sure if your question is about read_annotation or
aparc.annot in particular.

read_annotation.m reads the labels embedded in the annotation file you
passed to it. The labels embedded in the annotation file may or may
not be the same as those in FreeSurferColorLUT.

I could be wrong, but in the case of aparc.annot generated by
recon-all, I don't think the labels correspond to those in
FreeSurferColorLUT.

--Thomas

On Thu, Dec 22, 2011 at 6:23 PM, Martijn Steenwijk
<martijnsteenwijk@gmail.com> wrote:
> Dear all,
>
> I'm trying to read aparc.annot into Matlab using the
> matlab/read_annotation.m function. Is it correct that the labels read by
> this function do not correspond with for example the FreeSurferColorLUT?
>
> Are the labels stored as 16 bit (unsigned)integers, or in another way?
>
> Best,
> Martijn
>
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