Hello,

When I installed the BrainNet Viewer, Matlab kept showing me the error as below:

Undefined function 'imshow' for input arguments of type 'uint8'.

Error in BrainNet>BrainNet_OpeningFcn (line 229)
imshow(imread('BrainNet_Background.tif'));
Error in gui_mainfcn (line 221)
feval(gui_State.gui_OpeningFcn, gui_hFigure, [], guidata(gui_hFigure),
varargin{:});
Error in BrainNet (line 53)
gui_mainfcn(gui_State, varargin{:});

I tried installation once before, about 2 months ago, and it worked. Please let me know how can I solve this problem. I'm using Matlab R2012a

Thank you so much.

Yiling

Hi Yiling,

Thank you for asking.

This error is probably because the image toolbox was missing or not installed with your matlab. Could you please have a check? 

Best,
Mingrui

Hi Mingrui,
 
I have the same problem, which has not been solved yet.
My MATLAB has image processing toolbox.
Thank you.
 
Shoji
 

Hi,
 
It works with MATLAB 2013b but not with 2014a.
 
How can we solve this problem?
 
Thank you.
 
Shoji Tanaka
 

Hi, 

This is because the lack of image toolbox in your new version of MATLBA. Please change the codes in line 232 ~ 234 of BrainNet.m: 

from:
if exist('BrainNet_Background.tif','file')==2
imshow(imread('BrainNet_Background.tif'));
end

to: 
if exist('BrainNet_Background.tif','file')==2 && exist('imshow','file')
imshow(imread('BrainNet_Background.tif'));
end

Best,
Mingrui