与igraph的两列二分式布局 [英] two column bipartite layout with igraph

问题描述

我试图绘制一个二部图，但是有两列；该功能手册指出 layout_as_bipartite()在二部图的简单两行(或列)布局中最小化边缘交叉".尝试该示例，我只能得到两个行图:

I'm trying to plot a bipartite graph, but with two columns; the function manual states that layout_as_bipartite() "Minimize[s] edge-crossings in a simple two-row (or column) layout for bipartite graphs." Trying with the example, I can only get two row graphs:

library(igraph)
library(dplyr)
# Random bipartite graph
inc <- matrix(sample(0:1, 50, replace = TRUE, prob=c(2,1)), 10, 5)
g <- graph_from_incidence_matrix(inc)
plot(g, layout = layout_as_bipartite,
     vertex.color=c("green","cyan")[V(g)$type+1])

# Two columns
g %>%
  add_layout_(as_bipartite()) %>%
  plot()

推荐答案

看来， layout_as_bipartite 只处理行，而不处理列，但是修改结果布局很容易.布局只是节点的X-Y坐标，因此要从行更改为列，只需切换X和Y.

It appears that layout_as_bipartite only does rows, not columns, but it is easy to just modify the resulting layout. The layout is simply X-Y coordinates for the nodes, so to change from rows to columns, just switch X and Y.

LO = layout_as_bipartite(g)
LO = LO[,c(2,1)]
plot(g, layout = LO, vertex.color=c("green","cyan")[V(g)$type+1])

这篇关于与igraph的两列二分式布局的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！