GraphVar

Error in Graphvar analysis James
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GraphVar

Hi, I am receiving multiple errors and am hoping someone can assist me in my queries, thank you for your help:

 

Index in position 2 exceeds array bounds (c_null_model_udn_sign) CHL
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GraphVar

 

Dear all,

I get an error when using c_null_model_udn_sign to generate null models.

Index in position 2 exceeds array bounds (must not exceed 697).

Error caused by running c_null_model_und_sign Chih-Hao
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GraphVar

Dear All,

I get an error when I click "generate" in the Network Construction panel.

(The version of MATLAB is 2020b)

I try it several times, but it always happens, even when I don't click Calculate Graph Matrics and Raw Matrix.

To avoid any conflict between toolboxes, All toolboxes, but GraphVar, are removed.

I attach a picture for showing the details of my setting.

Very high t-values njl0930
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GraphVar

Dear all,

I'm getting very high t-values from the GLM (screenshot attached). I wondered if this is an issue due to my setup (also attached) or potentially something else? I also can also only export the f-values, the t-values do not seem to export when I save the results.

Any advice would be much appreciated!

Thanks.

New toolbox out! NBS-Predict: A Prediction-based Extension of the Network-based Statistic Johann Kruschwitz
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GraphVar

Dear rfmri community,

Does GraphVar s/w work for regions other than brain? Anirban Sengupta
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GraphVar
Hi,
          I am a new user for the GraphVa s/w. My requirement is to use it as a tool for visualizing the network obtained from connectivity matrix of spinal cord (not brain).
VIDEO Tutorials for GraphVar available Johann Kruschwitz
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GraphVar

Dear rfMRI community,

Normality of Graph Metrics?

Submitted by TimesNewRoman1 on
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GraphVar

Hello Johann, 

I've noticed that some graph theory studies use parametric statistics and others non-parametric. I am not sure how they checked for normality of graph metrics. Is there a way in GraphVar to check the distribution of the graph metrics in order to determine whether to run parametric or non-parametric statistics?

Thanks in advance!

 

Normalizing "Clustering Coefficient local"

Submitted by Marieke on
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GraphVar

Dear all,

I want to normalize the local CC. In contrast to the global CC and global and local characteristic path length, however, I encounter the following error:

"Normalization error: some metrics derived from random networks result in zero which cannot be used for normalization."

Is there any way I can solve this? When  I look into the MATLAB file, the file truly contains several zeros. How is this possible?

Thank you so much!

Best,

Marieke

 

 

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