Robustness function

[Chia-Hao Shih]

Hi Chris,

I got the following error message while using the robustness function.

Error in order(vertex_attr(g, measure), decreasing = TRUE) : 

  argument 1 is not a vector

Basically, I am trying to explore the association between network robustness/resilience and a clinical presentation in a patient group. I use CONN toolbox for imaging data processing and got connectivity matrixes for each individual patient. Then I use graph_from_edgelist from the igraph package to create individual graphs (after thresholding). However, when I use the robustness function in your BrainGraph package, I would get the abovementioned error message. I wonder if you could help me to solve this problem. I have pasted my code below as well as attached one graph from my participants here as  Rdata file.

robustness(Subj1, type = c("vertex"), measure = c("btwn.cent"), N = 1000)

Please let me know if you need additional information. Thanks in advance.

Best,

James

[Chris Watson]

I did not receive an error. What version of the package are you using? Please update brainGraph and try again. The function had been updated to work for situations such as yours (i.e., where the input graph does not have a "btwn.cent" vertex attribute). If you do not wish to update, try the following:

V(Subj1)$btwn.cent <- centr_betw(Subj1)$res

Otherwise, to update:

devtools::install_github('cwatson/brainGraph')

Chris

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[Chia-Hao Shih]

Hi Chris,

Thanks for the prompt response. I will try to figure this out and update my situation later.

Best,

James