Error Using Normalization


I am importing thresholded weighted, undirected matricies (symmetric) into GraphVar from an outside progam. These networks/matricies are all not fragmented (checked using the CheckFrag button). I am randomizing using the random_und_connected function however when I try to calculate cetain graph metrics such as betweenness centralitity, I get an error saying "Normalization error: some metrics derived from random networks result in zero which can not be used for normalization." 

Could someone please advise on what could be the issue? Thanks in advance!


GraphVar_v_1.03 Bugfix binary Clustering Coefficient

Dear GraphVar-users,

We found that in the GraphVar 1.0 update, the function to calculate the clustering coefficient
for binary undirected graphs was accidentally replaced with a function to calculate the number of
triangles around each node. The clustering coefficient, however, is defined as the number of triangles
around each node divided by the number of possible triangles. In other words, the values that were
returned are simply the unscaled form of the binary undirected clustering coefficient.





DPARSF Error/Bug Report Parallel Pool

Hi All,

I just wanted to share my experience about an error I got in DPARSF in case anyone else comes across it or in case the DPARSF creators want to fix this in future versions.

I have been running DPARSF jobs and they seem to fail a portion of the time somewhere after the initiation of the BET step.

Before this step, DPARSF requires user input (in my batch at least) saying "No co* images found" or something along those lines.


Start DPARSFA from NIFTI images

To whom it may concern,

I would like to start preprocessing in DPARSFA from Nifti images so I placed the images under the FunImg folder (which contains a folder for each subject). However, when I change the 'Starting Directory Name' to FunImg. I get the following warning: 'Please arrange each subject's DICOM images in one directory and then put them in FunRaw directory under the working directory' and the gui automatically revert to FunRaw (which I do not have as I want to start from nifti images).

Could you please advise how to solve this problem?

Thank you,

R package for graph theory analysis of MRI data

Dear DPABI users, (apologies for cross-post)


Between group FC

Dear Yan,

Although I am still learning, I am very happy with your software for the resting state analyses.

However, I have a doubt. I performed the FC analyes considering the ROI1. Then, I used SPM to compare two groups G1 and G2. At the whole brain, I obtain a significative difference between the two groups in the cluster C1.


Vote for Dr. Xi-Nian Zuo for OHBM Council Chair

Dear members of the R-fMRI Network,

As a current member of OHBM, you are cordially invited to participate in the council election of the Organization for Human Brain Mapping (OHBM). The elected nominees will represent you to work on the OHBM Council and Program Committee.


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