读取R中的数据集时出错

Question

我在阅读数据集时遇到问题

我的代码：

require(igraph)
g <- graph(c(0, 1, 1, 2, 2, 0, 1, 3, 3, 4, 
               4, 5, 5, 3, 4, 6, 6, 7, 7, 8, 
               8, 6, 9, 10, 10, 11, 11, 9))

错误：

Error in graph(c(0, 1, 1, 2, 2, 0, 1, 3, 3, 4, 4, 5, 5, 3, 4, 6, 6, 7,  : 
  At structure_generators.c:84 : Invalid (negative) vertex id, Invalid vertex id

Answer 1

问题似乎是名称0

的顶点

yourgraph <- c(0, 1, 1, 2, 2, 0, 1, 3, 3, 4, 
               4, 5, 5, 3, 4, 6, 6, 7, 7, 8, 
               8, 6, 9, 10, 10, 11, 11, 9)

g <- graph(yourgraph + 1)