单张中的可点击覆盖层

Question

我在R中使用leaflet+shiny，我在choropleth地图中显示邻居和区域的边界(即fillColor = "transparent")。每个区域包含几个邻域，因此层重叠(邻域在背景中)。我努力使邻域可点击(例如调用弹出窗口)。你能建议我怎么做吗？

我使用的代码如下所示：

leaflet()  %>%
  addPolygons (data = neighborhood.shp, #displaying variables
              stroke = TRUE,
              fillColor = ~fillVar,
              color = "#000000",
              popup = "click"
              weight=1) %>% 
  addPolygons (data = region.shp, #showing borders
              color = "#FFFFFF",
              weight=5,                                                     
              fillOpacity = 0,
              fillColor = "transparent")

谢谢!

Answer 1

在第二个addPolygons调用中设置fill = FALSE应使底层多边形层可查询/可单击：

leaflet()  %>%
  addPolygons (data = neighborhood.shp, #displaying variables
              stroke = TRUE,
              fillColor = ~fillVar,
              color = "#000000",
              popup = "click"
              weight=1) %>% 
  addPolygons (data = region.shp, #showing borders
              color = "#FFFFFF",
              weight=5,
              fill = FALSE)