可折叠树示例不起作用

Question

我阅读手册，并试图重现以下示例。但R会产生一个错误：

Error in collapsibleTree(tree, tooltip = TRUE, attribute = "Value", aggFun = identity) : df must be a data frame

我的问题是这段代码有什么问题。我正在使用R版本3.4.1。谢谢！

# Using a flat relationship-style data frame with tooltips 
Relationships <- data.frame(
    Parent = c(".",".","A", "A", "A", "B", "B", "C", "E", "E", "F", "K", "K", "M", "M"), 
    Child = c("A","K","B", "C", "D", "E", "F", "G", "H", "I", "J", "L", "M", "N", "O"), 
    Value = 1:15 
) 

tree <- data.tree::FromDataFrameNetwork(Relationships, "Value") 

# Define root node value as 0 
tree$Value <- 0 

# Create tree diagram with the aggregation function of identity 
collapsibleTree(tree, tooltip=TRUE, attribute="Value", aggFun=identity) 

Answer 1

我只是说需要跑了你的代码，没有任何错误，具体如下：

require(data.tree) 
require(collapsibleTree) 
Relationships <- data.frame(
    Parent=c(".",".","A", "A", "A", "B", "B", "C", "E", "E", "F", "K", "K", "M", "M"), 
    Child=c("A","K","B", "C", "D", "E", "F", "G", "H", "I", "J", "L", "M", "N", "O"), 
    Value=1:15 
) 
tree <- data.tree::FromDataFrameNetwork(Relationships, "Value") 
tree$Value <- 0 
collapsibleTree(tree, tooltip=TRUE, attribute="Value", aggFun=identity) 

下面是结果：

这是不是你希望是什么对于？