Dear experts,

I'm a beginner in using this interesting toolbox to visualize connectivity patterns. My connectivity matrices (CM) are constructed and I'd like to show its graph presentation. I found that the file format of CM should be a text file with .edge suffix which can be created by "using text editor or Matlab commands" (according to the main paper). Although I have searched a lot to understand the procedure, I couldn't figure out which command in Matlab should be used to create *.edge (or *.node) file. I really need your kind help to let me know how I can make my customized file.
Thank you very much.

Hi,

For the edges, the matlab commands could be: 

save filname.edge a -ascii

in which a refers to the connectivity matrix. 

For the nodes, I suggest to modify the templates files in the package with your own data. 

Best,
Mingrui

Dear Mingrui

Thank you very much. I didn't know that .edge suffix could be used in "save" command! Thanks a lot.

Dear Mingrui

 I save the connectivity matrix as you mentioned, but no edge in shown in the BrainNet Viewer. I attached the file, would you please check it and let me know the problem? Is it due to the format of number? How could I solve it? Thank you very  much.

Best Regards

Hi Mingrui,

How can I modify the node_AAL90.node based on my data?

or, how can I create a new node.node file from scratch?

Kindly, I tried 

dlmwrite('node.node',node,' ');

But It does save only the doubles and gives error for added strings (i.e. labels) to the last column.

Best regards,
Vahab

Hi all, I found the solution:


load R
load Labels
tmp = char(L);
node = strcat(num2str(R),tmp);
node(:,end-4:end-3) = char(' ');
dlmwrite('test.node',node,'delimiter','');

for edge files you can simply try,

dlmwrite('edge.edge',edge,'\t');

Best regards,
Vahab

Hi, 

BNV only deal with the upper triangular part of the matrix when drawing undirected networks. Please try the attached one. 

Best,
Mingrui

Hi Vahab,

Nice methods, thanks!

Best,
Mingrui

Originally posted by Mingrui Xia: I am unable to understand how exactly does one create a node file? If we wish to create nodes for say, Desikan-Killany 112 nodes, how should we go about it? Any pointers will be very helpful as I am new to this.
Thanks
src

Hi, 

Here is an example: 

save('m.edge','M','-ascii');

where, m.edge is file name and M is your connectivity matrix.

Best,
Mingrui

Originally posted by farzaneh keyvan:

Originally posted by Vahab Youssofzadeh: