I find it better to reuse the GIFTI object one read into matlab in the first 
place:

gnew=g;
gnew.cdata=M;
save(gnew,’saveName.gii’);

Peace,

Matt.

From: 
<[email protected]<mailto:[email protected]>>
 on behalf of Rita Elena Loiotile 
<[email protected]<mailto:[email protected]>>
Date: Monday, March 13, 2017 at 8:00 PM
To: "[email protected]<mailto:[email protected]>" 
<[email protected]<mailto:[email protected]>>
Subject: [HCP-Users] GIFTI read and save in Matlab

Hi,

I’m hoping someone can recommend a fix for a problem I’m having.  I have been 
using GIFTI library (http://www.artefact.tk/software/matlab/gifti/) to read 
GIFTIs into Matlab and perform computations.  I would like to save as a gifti.  
Using the software, I have tried the following:

M;  % matrix of values [vertices by timepoints]
g=gifti(M);  % converts my matrix to a gifti object with M stored under g.cdata;
save(g, ’saveName.gii’);

This seems to work fine.  I can re-load the saved gift into Matlab— 
newGifti=gifti(’saveName.gii’);— and it looks correct.  However, when I try to 
open saveName.gii using a non-Matlab visualization software— e.g. tksurfer, 
wb_view, freeview— I either encounter errors or load what looks like a gift 
containing all 0’s.

Has anyone had success using GIFTI library to save or is there an alternative 
technique?

Thank you very much in advance,
Rita

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