如何顯示 hctreemap2 獨特的關卡？

Question

我正在嘗試使用 highchart 創建樹形圖 plot，我想創建級別，我的意思是，在第一個視圖中用戶應該只看到“大陸”，在第二級“國家”，但現在 output 給了我這么多同一個大陸，我如何修改代碼以僅顯示一次大陸，當用戶單擊任何大陸時，顯示國家/地區？ 這是我現在的代碼。

hctreemap2(data = GNI2014,
           group_vars = c("continent", "iso3"),
           size_var = "population",
           color_var = "GNI",
           layoutAlgorithm = "squarified",
           levelIsConstant = FALSE,
           levels = list(
             list(level = 1, dataLabels = list(enabled = TRUE)),
             list(level = 2, dataLabels = list(enabled = TRUE)),
             list(level = 3, dataLabels = list(enabled = TRUE))
           )) %>% 
  hc_colorAxis(minColor = brewer.pal(7, "Greens")[1],
               maxColor = brewer.pal(7, "Greens")[7]) %>% 
  hc_tooltip(pointFormat = "<b>{point.name}</b>:<br>
                            Pop: {point.value:,.0f}<br>
                            GNI: {point.colorValue:,.0f}")

坦克斯

Answer 1

這很可能是在第一級解釋此數據時出現的問題 - name 屬性應該是國家的名稱，而不是大陸的名稱。 在這里，您可以看到帶有示例數據（大陸和國家/地區）的簡化演示 - 它可以向您展示如何做到這一點：

highchart() %>% 
 hc_add_series(
   type = "treemap",
   layoutAlgorithm = "squarified",
   allowDrillToNode = TRUE,
   levels = list(
     list(
       level = 1,
       dataLabels = list(
         enabled = TRUE
       ),
       borderWidth = 3
     ),
     list(
       level = 2,
       dataLabels = list(
         enabled = TRUE
       ),
       borderWidth = 2
     )
   ),
   data = list(
     # LEVEL I
     list(
       id = "Asia",
       name = "Asia",
       color = "#EC2500"
     ),
     list(
       id = "Europe",
       name = "Europe",
       color = "#ECE100"
     ),
     # LEVEL II
     list(
       name = "Russia",
       parent = "Asia",
       value = 4
     ),
     list(
       name = "China",
       parent = "Asia",
       value = 2
     ),
     list(
       id = "Poland",
       name = "Poland",
       parent = "Europe"
     ),
     list(
       id = "UK",
       name = "UK",
       parent = "Europe"
     ),
     # LEVEL 3
     list(
       name = "Warsaw",
       parent = "Poland",
       value = 3
     ),
     list(
       name = "Krakow",
       parent = "Poland",
       value = 3
     ),
     list(
       id = "SP",
       name = "London",
       value = 5,
       parent = "UK"
     )
   )
 )