fix bug 2778: 改单位

ruoyi-ui/src/views/JiHeExpressway/pages/Home/components/Dialogs/PerceiveEvent/components/LineChart/index.vue

@@ -14,12 +14,14 @@
 <script>
 import * as echarts from "echarts";
 import { lineChartOption } from "./chart"
-
+import { cloneDeep } from "lodash";
 export default {
   name: 'LineChart',
   mounted() {
     const chartIns = echarts.init(this.$refs.LineChartRef);
-    chartIns.setOption(lineChartOption);
+    const options = cloneDeep(lineChartOption);
+    options.tooltip.formatter = "{b}：{c}(辆)";
+    chartIns.setOption(options);
   },
 }
 </script>