[英]R color vertices by column
I am using iGraph to plot graphs. 我正在使用iGraph绘制图表。 I have just two columns in my matrix- A and B. I need to color my nodes with just 2 colors – that indicates nodes that belong to A and those that belong to B. eg:
我的矩阵A和B中只有两列。我需要用2种颜色为节点着色 - 表示属于A的节点和属于B的节点。例如:
# k is a df with 2 columns – A and B
k_mx <- as.matrix(k)
k_mx_g <- graph.edgelist(k_mx, directed = FALSE)
V(k_mx_g)$color = ?? ( want blue for A and red for B)
Please let me know how to do this. 请让我知道如何做到这一点。
Thanks, PD 谢谢,PD
Assuming this dataframe: 假设这个数据帧:
k <- structure(list(A = 1:4, B = 5:8),
.Names = c("A", "B"), row.names = c(NA, -4L),
class = "data.frame")
... you could use rep
with an each
argument. ...你可以使用
each
参数的rep
。 Otherwise they will be sequentially labelled with c("blue," "red", "blue", "red", "blue", "red", "blue", "red") due to argument recycling: 否则,由于参数回收,它们将依次用c标记(“蓝色”,“红色”,“蓝色”,“红色”,“蓝色”,“红色”,“蓝色”,“红色”):
V(k_mx_g)$color <- rep(c("blue", "red"), each=4)
Gabor's comment leads me to offer this option, which seems more general: Gabor的评论引导我提供这个选项,这似乎更通用:
V(k_mx_g)[k$A]$color <- "blue"
V(k_mx_g)[k$B]$color <- "red"
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