解决加载时，weixin-echart在最高层的问题

 <view class="pieWxEchart_main">
-    <ec-canvas id="mychart-dom-bar" style="width: 100%; height: 500rpx;"  canvas-id="mychart-bar" ec="{{ ec }}"></ec-canvas>
+  <ec-canvas id="mychart-dom-bar" style="width: 100%; height: 500rpx;" force-use-old-canvas="true" canvas-id="mychart-bar" ec="{{ ec }}"></ec-canvas>
 
-  </view>
\ No newline at end of file
+</view>
\ No newline at end of file

@@ -39,79 +39,7 @@ Page({
       }
     ],
     deviceDataList: [],
-    overallDataList: [
-      {
-        type: '光伏',
-        oneLabelName: "母线电压",
-        oneLabelNum: "20.21",
-        unitOne: "V",
-        unitTwo: "Hz",
-        unitThree: "kW",
-        twoLabelNum: "320.00",
-        twoLabelName: "PV电网频率",
-        threeLabelName: "PV负载功率",
-        threeLabelNum: '320.00'
-      },
-      {
-        type: '风电',
-        oneLabelName: "总有功功率",
-        oneLabelNum: "",
-        // unitOne: "kW",
-        // unitTwo: "kW",
-        // unitThree: "A",
-        // unitFour: "A",
-        // unitFive: "A",
-        twoLabelNum: "",
-        twoLabelName: "总无功功率",
-        threeLabelName: "A相电流",
-        threeLabelNum: '',
-        fourLabelName: "B相电流",
-        fourLabelNum: '',
-        fiveLabelName: "C相电流",
-        fiveLabelNum: '',
-      },
-      {
-        type: '充电桩',
-        oneLabelName: "A枪电压",
-        oneLabelNum: "20.21",
-        unitOne: "V",
-        unitTwo: "%",
-        unitthree: "V",
-        unitFour: "%",
-        twoLabelNum: "320.00",
-        twoLabelName: "A枪SOC",
-        threeLabelName: "B枪电压",
-        threeLabelNum: '320.00',
-        fourLabelName: "B枪SOC",
-        fourLabelNum: '65%',
-      },
-
-      {
-        type: '电网',
-        oneLabelName: "A相有功功率",
-        oneLabelNum: "20.21",
-        unitOne: "kW",
-        unitTwo: "kW",
-        unitthree: "kW",
-        twoLabelNum: "320.00",
-        twoLabelName: "B相有功功率",
-        threeLabelName: "C相有功功率",
-        threeLabelNum: '65%',
-      },
-      {
-        type: '储能',
-        oneLabelName: "SOC",
-        oneLabelNum: "20.21",
-        unitOne: "%",
-        unitTwo: "A",
-        unitThree: "V",
-        twoLabelNum: "320.00",
-        twoLabelName: "总电流",
-        threeLabelName: "总电压",
-        threeLabelNum: '320.00'
-      },
-
-    ],
+    overallDataList: [],
     storeCountList: [
       {
         type: "设备",

@@ -35,7 +35,7 @@
         <circularDiagram  deviceInfo="{{allData.deviceInfo}}"></circularDiagram>
         <deviceData deviceDataList="{{deviceDataList}}"></deviceData>
       </view>
-      <view class="overallOperationStatus">
+      <view class="overallOperationStatus" wx:if="{{overallDataList.length>0}}">
         <topTitle topTitleName="整体运行情况"></topTitle>
         <overallOperation overallDataList="{{overallDataList}}"></overallOperation>
       </view>