在highcharter包中使用highmaps获取省标签的价值

Question

我试图从这个例子中获取省标签中的值：

library("dplyr")
library('highcharter')
library("viridisLite")

data("USArrests", package = "datasets")
data("usgeojson")

USArrests <- USArrests %>%
  mutate(state = rownames(.))


highchart() %>%
  hc_title(text = "Violent Crime Rates by US State") %>%
  hc_subtitle(text = "Source: USArrests data") %>%
  hc_add_series_map(usgeojson, USArrests, name = "Murder arrests (per 100,000)",
                    value = "Murder", joinBy = c("woename", "state"),
                    dataLabels = list(enabled = TRUE,
                                      format = '{point.properties.postalcode}'))

我希望在dataLabels而不是州abbr中获得USArrests的价值'谋杀'。该怎么做？ 谢谢， 添

Answer 1

要更改dataLabels格式，您可以添加地图系列，如：

hc_add_series_map(usgeojson, USArrests, name = "Murder arrests (per 100,000)",
                    value = "Murder", joinBy = c("woename", "state"),
                    dataLabels = list(enabled = TRUE,
                                      format = '{point.value}'))

重要的是format = '{point.value}' - 这将使Highcharts使用某个点的值，并且从“谋杀”（value = "Murder"）开始设置值。