測地線の数と長さを求めるにはgeodist関数を使う。例.> dat <- matrix(c(+ 0,1,1,0,+ 0,0,0,1,+ 0,0,0,1,+ 0,0,0,0),+ 4, byrow = T)> geodist(dat)$counts [,1] [,2] [,3] [,4][1,] 1 1 1 2[2,] 0 1 0 1[3,] 0 0 1 1[4,] 0 0 0 1$gdist [,1] [,2] [,3] [,4]…

固有ベクトル中心性の算出にはevcent関数を使う。例.> dat <- matrix(c(+ 0,1,0,0,0,1,0,0,+ 1,0,1,1,1,0,0,0,+ 0,1,0,0,0,0,0,0,+ 0,1,0,0,0,0,0,0,+ 0,1,0,0,0,0,0,0,+ 1,0,0,0,0,0,1,1,+ 0,0,0,0,0,1,0,0,+ 0,0,0,0,0,1,0,0),+ 8, byrow = T)> #固有ベク…

近接中心性の算出にはcloseness関数を使う。例. 図上> dat <- matrix(c(+ 0,1,1,1,0,0,+ 0,0,0,0,0,0,+ 0,0,0,0,0,0,+ 0,0,0,0,1,1,+ 0,0,0,0,0,0,+ 0,0,0,0,0,0+ ), 6, byrow = T)> closeness(dat)[1] 0.7142857 0.0000000 0.0000000 0.0000000 0.0000000 0…