Add Radio Button functionality to change map type

IT Shiny App.R

@@ -6,13 +6,24 @@ library(sf)
 
 
 crime_json <- fromJSON(file="C:\\Users\\milli\\Documents\\Datenbereinigung\\data.json")
-geojson_data <- st_read("C:\\Users\\milli\\Documents\\Datenbereinigung\\geojson.json")
+
-geojson_data <- st_transform(geojson_data, crs = 4326)
+geo_bezirke <- st_read("C:\\Users\\milli\\Documents\\Datenbereinigung\\geobezirke-parsed.json")
+geo_bezirke <- st_transform(geo_bezirke, crs = 4326)
+
+geo_stadtteile <- st_read("C:\\Users\\milli\\Documents\\Datenbereinigung\\geostadtteile-parsed.json")
+geo_stadtteile <- st_transform(geo_stadtteile, crs = 4326)
+
 bezirke <- names(crime_json)
 
 ui <- page_fillable(
   layout_columns(
     card(
+      radioButtons(
+        inputId = "rd_maptype",
+        label = "Kartentyp",
+        choices = c("Bezirke", "Stadtteile"),
+        selected = "Bezirke"
+      ),
       selectInput(
         inputId = "drp_bezirk",
         label = "Bezirk",
@@ -49,21 +60,52 @@ server <- function(input, output, session){
     }
   })
   
+  observeEvent(input$rd_maptype, {
+    maptype <- input$rd_maptype
+    mapproxy <- leafletProxy("hhmap")
+    
+    if (maptype == "Bezirke"){
+      hideGroup(mapproxy, "layer_stadtteile")
+      showGroup(mapproxy, "layer_bezirke")
+    } 
+    else {
+      hideGroup(mapproxy, "layer_bezirke")
+      showGroup(mapproxy, "layer_stadtteile")
+      
+    }
+  })
+  
   output$hhmap <- renderLeaflet({
     leaflet() %>%
       addProviderTiles(providers$CartoDB.Positron) %>%
       addPolygons(
-        data = geojson_data,
+        data = geo_bezirke,
+        group = "layer_bezirke",
         color = "#7bb5ab",
         fillColor = "#bdf0e7",
         weight = 1,
-        fillOpacity = 0.05,      # Polygon fill transparency
+        fillOpacity = 0.4,      # Polygon fill transparency
         highlightOptions = highlightOptions(
           color = "#103b57",
           weight = 4,
           bringToFront = TRUE
         ),
       ) %>%
+      addPolygons(
+        data = geo_stadtteile,
+        group = "layer_stadtteile",
+        color = "#7bb5ab",
+        fillColor = "#bdf0e7",
+        options = pathOptions(pane = "overlayPane"), # Use a leaflet option to ensure it's hidden
+        weight = 1,
+        fillOpacity = 0.4,      # Polygon fill transparency
+        highlightOptions = highlightOptions(
+          color = "#103b57",
+          weight = 4,
+          bringToFront = TRUE
+        ),
+      ) %>%
+      
       setView(
         lng = 9.98716634776887,
         lat = 53.5488439196432,
@@ -71,5 +113,7 @@ server <- function(input, output, session){
       )
   })
 }
+options(shiny.host = '0.0.0.0')
+options(shiny.port = 8888)
 shinyApp(ui = ui, server = server)