public void render(Graphics2D g2, Rectangle2D dataArea,
PlotRenderingInfo info, CrosshairState crosshairState) {
// now get the data and plot it (the visual representation will depend
// on the renderer that has been set)...
ContourDataset data = this.getContourDataset();
if (data != null) {
ColorBar zAxis = getColorBar();
if (this.clipPath != null) {