我正在尝试计算数据树结构中的时间。我可以将小时数直接加到父节点下,但不能在树中包括分配给父节点的小时数。任何建议都很好。
这就是我得到的:levelName hours totalhours1 Ned NA 12 °--John 1 33 °--Kate 1 34 ¦--Dan 1 15 ¦--Ron 1 16 °--Sienna 1 1
这就是我要寻找的:levelName hours totalHours1 Ned NA 52 °--John 1 53 °--Kate 1 44 ¦--Dan 1 15 ¦--Ron 1 16 °--Sienna 1 1
这是我的代码:
# Install package
install.packages('data.tree')
library(data.tree)
# Create data frame
to <- c("Ned", "John", "Kate", "Kate", "Kate")
from <- c("John", "Kate", "Dan", "Ron", "Sienna")
hours <- c(1,1,1,1,1)
df <- data.frame(from,to,hours)
# Create data tree
tree <- FromDataFrameNetwork(df)
print(tree, "hours")
# Get running total of hours that includes all nodes and children values.
tree$Do(function(x) x$total <- Aggregate(x, "hours", sum), traversal = "post-order")
print(tree, "hours", runningtotal = tree$Get(Aggregate, "total", sum))
最佳答案
您可以简单地使用递归函数:
myApply <- function(node) {
node$totalHours <-
sum(c(node$hours, purrr::map_dbl(node$children, myApply)), na.rm = TRUE)
}
myApply(tree)
print(tree, "hours", "totalHours")
结果:
levelName hours totalHours
1 Ned NA 5
2 °--John 1 5
3 °--Kate 1 4
4 ¦--Dan 1 1
5 ¦--Ron 1 1
6 °--Sienna 1 1
编辑:填充两个元素:
# Create data frame
to <- c("Ned", "John", "Kate", "Kate", "Kate")
from <- c("John", "Kate", "Dan", "Ron", "Sienna")
hours <- c(1,1,1,1,1)
hours2 <- 5:1
df <- data.frame(from,to,hours, hours2)
# Create data tree
tree <- FromDataFrameNetwork(df)
print(tree, "hours", "hours2")
myApply <- function(node) {
res.ch <- purrr::map(node$children, myApply)
a <- node$totalHours <-
sum(c(node$hours, purrr::map_dbl(res.ch, 1)), na.rm = TRUE)
b <- node$totalHours2 <-
sum(c(node$hours2, purrr::map_dbl(res.ch, 2)), na.rm = TRUE)
list(a, b)
}
myApply(tree)
print(tree, "hours", "totalHours", "hours2", "totalHours2")
结果:
levelName hours totalHours hours2 totalHours2
1 Ned NA 5 NA 15
2 °--John 1 5 5 15
3 °--Kate 1 4 4 10
4 ¦--Dan 1 1 3 3
5 ¦--Ron 1 1 2 2
6 °--Sienna 1 1 1 1