R Leaflet Map – addPolygon地理标签

2019年7月28日 355次阅读

我正在制作一张R传单地图,这张地图有人口普查区,每个都有一个数字相关联.当您滚动或使用图层控制单选按钮时,是否可以在地图上显示标签.

标签已经在形状文件中：

map1<-leaflet()%>%
  addTiles()%>%

addPolygons(data = plotMerge,
          fillColor = ~pal(plotMerge$incomePerCapita),
          color = "#000000", #this is an outline color hoping to
          fillOpacity = 0.8, # add the labels inside this outline
          weight = 0.2,
          popup=popup)%>%
addLegend(pal = pal,
            values  = plotMerge$incomePerCapita,
            position = "bottomright",
            title = "State-wide Income Percentiles",
            labFormat = labelFormat(digits=1))

saveas(map1, "map1.html")
map1

最佳答案 一种方法是在addPolygons中使用highlight选项,如下所示：

leaflet(df) %>% addTiles() %>%
addPolygons(data=df,weight=.85,
    highlight = highlightOptions(
    weight = 5, color= "#666",
    dashArray = "", fillOpacity = 0.7,
    bringToFront = TRUE),
   label=~df$labelyouwant)

当您将鼠标悬停在多边形上时,将显示标签.

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