Fixed animation init control

Frontend Angular 4/src/app/layout/plotter/graph2D/graph2D.component.ts

@@ -239,6 +239,7 @@ export class Graph2DComponent {
         $this.animation.currentFrame = 0;
         $this.animation.speed = 1000;
         $this.animation.playing = false;
+        $this.animation.init = false;
         this.instance.removeAllGraphs();
     }