图上标注R2和RMSE指标

src/components/rtReport/index.vue

@@ -174,7 +174,7 @@ export default {
             tDatas: null,
             midValue: 10,
             erExpression: null,
-            erR2: "0.037207",
+            erR2: "r² = 0.037207",
         };
     },
     created() {
@@ -323,6 +323,10 @@ export default {
             }
             // const x_limit = Math.abs(Math.max(...xArr) / xArr.length);
             //多项式回归
+            let wcpf = data.map(a=>{
+                return Math.pow((a[1]-a[0]),2)
+            }).reduce((acc, curr) => acc + curr, 0);
+            let rmseValue = "RMSE = "+ Math.sqrt(wcpf/data.length);
             let myRegression = this.echartRegression("polynomial", data, 1);
             var option = {
                 title: {
@@ -334,6 +338,7 @@ export default {
                 grid: {
                     right: "15%",
                     bottom: "25%",
+                    height: "50%",
                 },
                 toolbox: {
                     show: true,
@@ -400,7 +405,7 @@ export default {
                     },
                 ],
                 legend: {
-                    top: 20,
+                    top: 50,
                     right: 45,
                     // selectedMode: false,
                     data: [
@@ -408,14 +413,19 @@ export default {
                             name: "erExpression",
                             icon: "circle",
                         },
-                        // {
-                        //   name: "r2",
-                        //   icon: "circle",
-                        // },
+                        {
+                          name: "r2",
+                          icon: "circle",
+                        },
+                        {
+                            name:"RMSE",
+                            icon: "circle",
+                        }
                     ],
                     formatter: (name) => {
                         if (name === "erExpression") return this.erExpression;
                         else if (name === "r2") return this.erR2;
+                        else if(name ==="RMSE") return rmseValue;
                     },
                 },
                 xAxis: {
@@ -449,6 +459,12 @@ export default {
                         type: "scatter",
                         data: data,
                     },
+                    {
+                        name: "RMSE",
+                        symbolSize: 10,
+                        type: "scatter",
+                        // data: data,
+                    },
                     {
                         name: "erExpression",
                         type: "line",