來自shinyDashboard的infoBox/valueBox閃亮

Question

我有一個簡單的閃亮應用程序，只是一個下拉列表阿富汗地區和傳單地圖相同。

形狀文件可以在這個link訪問 - 使用AFG_adm2.shp從http://www.gadm.org/download

這裏的應用代碼：

library(shiny) 
library(leaflet) 
library(rgdal) 
library(sp) 

afg <- readOGR(dsn = "data", layer ="AFG_adm2", verbose = FALSE, stringsAsFactors = FALSE) 

ui <- fluidPage(
    titlePanel("Test App"), 
    selectInput("yours", choices = c("",afg$NAME_2), label = "Select Country:"), 
    leafletOutput("mymap") 

) 

server <- function(input, output){ 
    output$mymap <- renderLeaflet({ 
    leaflet(afg) %>% addTiles() %>% 
     addPolylines(stroke=TRUE, color = "#00000", weight = 1) 
    }) 
    proxy <- leafletProxy("mymap") 

    observe({ 
    if(input$yours!=""){ 
     #get the selected polygon and extract the label point 
     selected_polygon <- subset(afg,afg$NAME_2==input$yours) 
     polygon_labelPt <- selected_polygon@polygons[[1]]@labpt 

     #remove any previously highlighted polygon 
     proxy %>% removeShape("highlighted_polygon") 

     #center the view on the polygon 
     proxy %>% setView(lng=polygon_labelPt[1],lat=polygon_labelPt[2],zoom=7) 

     #add a slightly thicker red polygon on top of the selected one 
     proxy %>% addPolylines(stroke=TRUE, weight = 2,color="red",data=selected_polygon,layerId="highlighted_polygon") 
    } 
    }) 
} 

# Run the application 
shinyApp(ui = ui, server = server) 

我想infoBox或valueBox比如Widget從shinyDashboard到根據用戶選擇在地圖下方顯示一些數據（如地區人口）。我怎樣才能做到這一點？

Answer 1

您需要更改程序的結構並需要在UI中添加儀表板頁面。

這裏有一些參考只是看看。你會知道！

https://rstudio.github.io/shinydashboard/structure.html

https://rdrr.io/cran/shinydashboard/man/valueBox.html