"betweenness" function not found

[Former user]

node.betweenness <- betweenness(net$network)

Error: could not find function "betweenness"

[Xinqiu Yao]

Hi,

The betweenness function comes from igraph package not bio3d. If you want to call this function (and also other igraph functions) in your own script/R session, call library(igraph) first. If you get the error like "there is no package called 'igraph'", install it from CRAN:

Install.packages("igraph")