R HighCharter - 自定义工具提示标题

Question

我想在 R 中制作的 highcharter 图表上自定义弹出框（我相信称为工具提示）。

# Packages
library(highcharter)
library(tidyverse)

# Here is the data
fake_dat <- tribble(
  ~Project_Name, ~Portfolio, ~Lender, ~Loan_Balance, ~Maturity_Year,
  "Building_1",'Office','Chase',100000,2021,
  "Hotel_1","Hospitality",'Chase',50000,2022,
  "Condo_1","Development","Happy Bank",175000,2023,
  "Building_2","Office","Bank of America",125000,2024)

# Base chart
fake_dat %>%
  hchart("bar", 
     hcaes(x = Project_Name, y = Loan_Balance),
     name = "Loan Balance")

当我将鼠标拖到图表栏上时，它会提供一个弹出框，其中包含我指定的项目名称和贷款余额字段的信息。

是否可以为其他字段（投资组合、贷方、到期年份）添加其他文本以在将鼠标悬停在系列上时显示？

Answer 1

您可以使用 hc_tooltip 并创建自定义 JS 格式化程序。
图形数据可通过 this.point. 属性访问。

fake_dat %>%
  hchart("bar", 
         hcaes(x = Project_Name, y = Loan_Balance),
         name = "Loan Balance") %>%
           hc_tooltip(formatter = JS("function(){
                            return ('Lender: ' + this.point.Lender + ' <br> Loan balance: ' + this.point.Loan_Balance)
                            }"))