问题描述
我有这种类型的数据
level1 level2
1 fruit apple
2 fruit orange
3 vegetable carrot
4 vegetable celery
我想把它变成一个闪亮的树,并在选择(和关闭)所有节点的情况下渲染它
这是我的尝试
library(shiny)
library(data.tree)
library(shinytree)
dta <-
data.frame(
stringsAsFactors = FALSE,level1 = c("fruit","fruit","vegetable","vegetable"),level2 = c("apple","orange","carrot","celery")
)
ui <- fluidPage(
shinytree::shinytree("tree_food",checkBox = TRUE)
)
server <- function(input,output,session) {
tree_food <- reactive({
# create tree
dta$pathString <- paste("p",dta$level1,dta$level2,sep = "/",na.rm = TRUE)
htree <- data.tree::as.Node(dta["pathString"],pathDelimiter = "/",na.rm=TRUE)
# turn it into list format for {shinytree}
TreeList <- data.tree::ToListSimple(htree,nameName = "")
# remove the 'name' node
TreeList$name <- NULL
TreeList
})
output$tree_food <- renderTree({tree_food()})
}
shinyApp(ui,server)
树被渲染得很好
解决方法
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