      $("#hint").on("click", function() {
        places["Global Trend"] = calPlace("Global Trend");
        showPlace("Global Trend");
        // calCounts(global);
        chart.load({
          columns: [places["Global Trend"].c, places["Global Trend"].a, places["Global Trend"].r, places["Global Trend"].d],
          unload: ['Aggr. Confirmed', 'Active Confirmed', 'Recovered', 'Death'],
        });

        $("#hint").text("Click a place to review local trend.");

      });

      mymap.on('click', onMap