igraph制作随机生成的节点属性值？

Question

I have a code like the following:

library(igraph)
g <- make_empty_graph (100) %>%
  set_vertex_attr("a", value = 0) 
V(g)$a <- sample(c(0, 1), replace = TRUE, prob = c(0.1, 0.9))
V(g)$a

I want to randomize the node attribute value for "a" with a specific weight. However if I run the program above, all the values for "a" turn to 1 with the occasional exception where the values alternate between 1 and 0. How do I fix this?

Answer 1

可能是您应该使用runif(100, 0, 1)而不是sample(c(0, 1), replace = TRUE, prob = c(0.1, 0.9)) runif sample(c(0, 1), replace = TRUE, prob = c(0.1, 0.9)) ，从最小到最大的间隔， runif样本均匀分布。