读取二部图和单模投影

Question

如何读取二分图？我尝试了以下代码，但是当我尝试制作 OMP 时，它显示

Error in bipartite.projection(g, types = NULL) : 
  Not a bipartite graph, supply `types' argument

这是代码:

edgelist = read.csv("g1.csv",header=FALSE,sep=",")
g  = graph.edgelist(as.matrix(edgelist),directed=FALSE)
proj <- bipartite.projection(g,types=NULL)
g2= proj[[1]]
myplot(g2)

g1.csv 1,5 1,4 2,4 3,5

Answer 1

来自文档:

 Bipartite graphs have a ‘type’ vertex attribute in igraph, this is
 boolean and ‘FALSE’ for the vertices of the first kind and ‘TRUE’
 for vertices of the second kind.

所以请添加一个type顶点属性，它定义哪些顶点属于哪个组。