public void setDefaultValue(int _index) {
   switch (_index) {
     case 0:
       setDataArray((double[][][][]) null);
       break;
     case 1:
       setAutoscaleMagnitude(true);
       break;
     case 2:
       setExtrema(0.0, maxMagnitude);
       break;
     case 3:
       setExtrema(minMagnitude, 1.0);
       break;
     case 4:
       setNumberOfLevels(16);
       break;
     case 5:
       setMinColor(Color.BLUE);
       break;
     case 6:
       setMaxColor(Color.RED);
       break;
     case 7:
       setZoom(1.0);
       break;
     case 8:
       setInvisibleLevel(-1);
       break;
     default:
       super.setDefaultValue(_index - FIELD_PROPERTIES_ADDED);
       break;
   }
 }