public ObjectProperty<RadarChartMode> radarChartModeProperty() {
        if (null == radarChartMode) {
            radarChartMode = new ObjectPropertyBase<RadarChartMode>(_radarChartMode) {
                @Override protected void invalidated() { fireTileEvent(RECALC_EVENT); }
                @Override public Object getBean() { return Tile.this; }
                @Override public String getName() { return "radarChartMode"; }
            };
            _radarChartMode = null;
        }
        return radarChartMode;
    }
Defines the mode that is used in the RadarChartTileSkin
to visualize the data in the RadarChart.
There are Mode.POLYGON and Mode.SECTOR.
@param MODE
src/main/java/eu/hansolo/tilesfx/Tile.java