protected override void Start()
 {
     base.Start();
     if (_visualization != null)
     {
         _scatterplot2d = (Scatterplot2D)_visualization;
     }
 }
        protected override void OnEnable()
        {
            base.OnEnable();
            displayRelativeValues_prop = serializedObject.FindProperty("_displayRelativeValues");
            zoomMin_prop = serializedObject.FindProperty("_zoomMin");
            zoomMax_prop = serializedObject.FindProperty("_zoomMax");

            _scatterPlot2D = (Scatterplot2D)serializedObject.targetObject;
        }