testtt

mean-app/dist/main.bundle.js

@@ -248,8 +248,10 @@ var LineChartComponent = (function () {
             .get()
             .subscribe(function (res) {
             console.log(res);
+            var newDataSet = [];
             var newLine = { data: res.data, label: res.label };
-            _this.lineChartData[0] = newLine;
+            newDataSet.push(newLine);
+            _this.lineChartData = newDataSet;
         });
         console.log("Init");
     };

mean-app/src/app/chart.component.ts

@@ -46,9 +46,10 @@ export class LineChartComponent implements OnInit {
       .get()
       .subscribe(res => {
         console.log(res);
+        const newDataSet = [];
         const newLine = {data: res.data, label: res.label};
-        this.lineChartData[0] = newLine;
-
+        newDataSet.push(newLine);
+        this.lineChartData = newDataSet;
       });
 
     console.log("Init");