列车曲线图调整

src/components/line-app/infos/TrainInfoEcharts.vue

@@ -17,7 +17,7 @@
 </template>
 
 <script setup lang="ts">
-import { ref, watch } from 'vue';
+import { watch } from 'vue';
 import { useLineStore } from 'src/stores/line-store';
 import DraggableDialog from 'src/components/common/DraggableDialog.vue';
 import * as echarts from 'echarts';
@@ -59,11 +59,11 @@ function getDataList() {
   });
 }
 
-const myChart = ref();
+let myChart: echarts.EChartsType;
 function initEcharts() {
   const dom = document.getElementById('train-echarts');
   if (!dom) return;
-  myChart.value = echarts.init(dom, null, {
+  myChart = echarts.init(dom, null, {
     renderer: 'canvas',
     useDirtyRect: false,
   });
@@ -117,14 +117,14 @@ function initEcharts() {
     ],
   };
 
-  myChart.value.setOption(option);
+  myChart.setOption(option);
 }
 
 watch(
   () => lineStore.socketStates,
   () => {
     getDataList();
-    myChart.value?.setOption({
+    myChart?.setOption({
       series: [
         {
           data: speedList,