add pie chart for fatality data

app/server.R

@@ -930,4 +930,51 @@ server <- function(input, output, session) {
       ) %>%
       config(displayModeBar = FALSE)
   })
+
+  output$fatality_pie <- renderPlotly({
+    data <- fatality_heatmap_data()
+
+    pie_data <- data %>%
+      mutate(
+        category = case_when(
+          fatality_type %in% c("wind", "tree_fall") ~ "Wind",
+          fatality_type %in% c("surf", "rip_current") ~ "Surf",
+          fatality_type == "freshwater_floods" ~ "Freshwater Flood",
+          fatality_type == "offshore" ~ "Offshore",
+          fatality_type == "storm_surge" ~ "Storm Surge",
+          fatality_type == "tornado" ~ "Tornado",
+          fatality_type == "unknown" ~ "Unknown",
+          TRUE ~ NA_character_
+        )
+      ) %>%
+      filter(!is.na(category)) %>%
+      group_by(category) %>%
+      summarise(n = sum(n), .groups = "drop") %>%
+      filter(n > 0)
+
+    category_colors <- c(
+      "Wind"             = "#cd2626",
+      "Surf"             = "#4f94cd",
+      "Offshore"         = "#5cacee",
+      "Storm Surge"      = "#4682b4",
+      "Freshwater Flood" = "#36648b",
+      "Tornado"          = "#8b1a1a",
+      "Unknown"          = "#ffa500"
+    )
+
+    plot_ly(
+      data = pie_data,
+      labels = ~category,
+      values = ~n,
+      type = "pie",
+      marker = list(colors = unname(category_colors[pie_data$category])),
+      textinfo = "label+value",
+      hovertemplate = "%{label}: %{value}<extra></extra>"
+    ) %>%
+      layout(
+        legend = list(orientation = "h", x = 0.5, xanchor = "center", y = -0.1),
+        margin = list(l = 10, r = 10, t = 10, b = 10)
+      ) %>%
+      config(displayModeBar = FALSE)
+  })
 }

app/ui.R

@@ -243,7 +243,6 @@ ui <- page_navbar(
           )
         )
       ),
-      nav_panel("Perils"),
       nav_panel(
         "Fatality Map",
         layout_columns(
@@ -262,9 +261,11 @@ ui <- page_navbar(
           layout_column_wrap(
             width = 1,
             card(
-              plotlyOutput("fatality_heatmap", height = "100%")
+              plotlyOutput("fatality_pie", height = "100%")
             ),
-            card()
+            card(
+              plotlyOutput("fatality_heatmap", height = "100%")
+            )
           )
         )
       ),