R 如何为网络中的组着色3'；桑基网络？

我的节点由名称和组组成，但我似乎无法在sankey图表中为组实现不同的颜色。颜色可以是默认的全蓝色，也可以是使用下面代码的全黑色

以下是我使用的代码：

sankeyNetwork(        
Links = data$links,
Nodes = data$nodes,
Source= "source",
Target = "target",
Value = "weight",
NodeID = "names",
fontSize = 15,
NodeGroup = "group" 
))

下面是我得到的输出：

---

在网络图中为绘制两种不同的颜色

节点数据帧中的

节点组

向量需要为非数字。这在文档中并不明显。因为您没有提供您正在处理的数据，我们无法确定这是否是您遇到的问题，但在@john friel制作的示例中，这就是问题所在。下面是一个工作示例，唯一的变化是

组

向量被强制为字符向量

library(networkD3)
source <- c(0,1,2,3,4,5)
target <- c(2,2,2,3,1,0)
value <- c(33,44,55,66,77,88)

sankeydata <- data.frame(source,target, value)

names <- c('a', 'b', 'c', 'd', 'e', 'f')
id <- c(0,1,2,3,4,5)
group <- as.character(c(1,1,1,2,2,2)) # this is the only line changed

sankeyNodes <- data.frame(names,id, group)


sankeyNetwork(Links = sankeydata, Nodes = sankeyNodes, Source = "source",
         Target = "target", Value = "value", NodeID = "names", 
         NodeGroup = "group", fontSize = 12, nodeWidth = 30)

库（networkD3）
来源请包括一个生成绘图的小数据集。
#same data
forceNetwork(Links = sankeydata, Nodes = sankeyNodes , Source = "source",
         Target = "target", Value = "value", NodeID = "names",
         Group = "group", opacity = 0.8, zoom = TRUE)

library(networkD3)
source <- c(0,1,2,3,4,5)
target <- c(2,2,2,3,1,0)
value <- c(33,44,55,66,77,88)

sankeydata <- data.frame(source,target, value)

names <- c('a', 'b', 'c', 'd', 'e', 'f')
id <- c(0,1,2,3,4,5)
group <- as.character(c(1,1,1,2,2,2)) # this is the only line changed

sankeyNodes <- data.frame(names,id, group)


sankeyNetwork(Links = sankeydata, Nodes = sankeyNodes, Source = "source",
         Target = "target", Value = "value", NodeID = "names", 
         NodeGroup = "group", fontSize = 12, nodeWidth = 30)