setDomainCrosshairValue(value, true);

    }

    /**
     * Sets the domain crosshair value.
     * <P>
     * Registered listeners are notified that the axis has been modified, but
     * only if the crosshair is visible.
     *
     * @param value  the new value.
     * @param notify  a flag that controls whether or not listeners are notified.
     */
    public void setDomainCrosshairValue(double value, boolean notify) {

        this.domainCrosshairValue = value;
        if (isDomainCrosshairVisible() && notify) {
            notifyListeners(new PlotChangeEvent(this));
        }

    }

    /**
     * Returns the Stroke used to draw the crosshair (if visible).
     *
     * @return the crosshair stroke.
     */
    public Stroke getDomainCrosshairStroke() {
        return domainCrosshairStroke;
    }

    /**
     * Sets the Stroke used to draw the crosshairs (if visible) and notifies
     * registered listeners that the axis has been modified.
     *
     * @param stroke  the new crosshair stroke.
     */
    public void setDomainCrosshairStroke(Stroke stroke) {
        domainCrosshairStroke = stroke;
        notifyListeners(new PlotChangeEvent(this));
    }

    /**
     * Returns the domain crosshair color.
     *
     * @return the crosshair color.
     */
    public Paint getDomainCrosshairPaint() {
        return this.domainCrosshairPaint;
    }

    /**
     * Sets the Paint used to color the crosshairs (if visible) and notifies
     * registered listeners that the axis has been modified.
     *
     * @param paint the new crosshair paint.
     */
    public void setDomainCrosshairPaint(Paint paint) {
        this.domainCrosshairPaint = paint;
        notifyListeners(new PlotChangeEvent(this));
    }

    /**
     * Returns a flag indicating whether or not the range crosshair is visible.
     *
     * @return the flag.
     */
    public boolean isRangeCrosshairVisible() {
        return this.rangeCrosshairVisible;
    }

    /**
     * Sets the flag indicating whether or not the range crosshair is visible.
     *
     * @param flag  the new value of the flag.
     */
    public void setRangeCrosshairVisible(boolean flag) {

        if (this.rangeCrosshairVisible != flag) {
            this.rangeCrosshairVisible = flag;
            notifyListeners(new PlotChangeEvent(this));
        }

    }

    /**
     * Returns a flag indicating whether or not the crosshair should "lock-on"
     * to actual data values.
     *
     * @return the flag.
     */
    public boolean isRangeCrosshairLockedOnData() {
        return this.rangeCrosshairLockedOnData;
    }

    /**
     * Sets the flag indicating whether or not the range crosshair should "lock-on"
     * to actual data values.
     *
     * @param flag  the flag.
     */
    public void setRangeCrosshairLockedOnData(boolean flag) {

        if (this.rangeCrosshairLockedOnData != flag) {
            this.rangeCrosshairLockedOnData = flag;
            notifyListeners(new PlotChangeEvent(this));
        }

    }

    /**
     * Returns the range crosshair value.
     *
     * @return The value.
     */
    public double getRangeCrosshairValue() {
        return this.rangeCrosshairValue;
    }

    /**
     * Sets the domain crosshair value.
     * <P>
     * Registered listeners are notified that the plot has been modified, but
     * only if the crosshair is visible.
     *
     * @param value  the new value.
     */
    public void setRangeCrosshairValue(double value) {

        setRangeCrosshairValue(value, true);

    }

    /**
     * Sets the range crosshair value.
     * <P>
     * Registered listeners are notified that the axis has been modified, but
     * only if the crosshair is visible.
     *
     * @param value  the new value.
     * @param notify  a flag that controls whether or not listeners are notified.
     */
    public void setRangeCrosshairValue(double value, boolean notify) {

        this.rangeCrosshairValue = value;
        if (isRangeCrosshairVisible() && notify) {
            notifyListeners(new PlotChangeEvent(this));
        }

    }

    /**
     * Returns the Stroke used to draw the crosshair (if visible).
     *
     * @return the crosshair stroke.
     */
    public Stroke getRangeCrosshairStroke() {
        return rangeCrosshairStroke;
    }

    /**
     * Sets the Stroke used to draw the crosshairs (if visible) and notifies
     * registered listeners that the axis has been modified.
     *
     * @param stroke  the new crosshair stroke.
     */
    public void setRangeCrosshairStroke(Stroke stroke) {
        rangeCrosshairStroke = stroke;
        notifyListeners(new PlotChangeEvent(this));
    }

    /**
     * Returns the range crosshair color.
     *
     * @return the crosshair color.
     */
    public Paint getRangeCrosshairPaint() {
        return this.rangeCrosshairPaint;
    }

    /**
     * Sets the Paint used to color the crosshairs (if visible) and notifies
     * registered listeners that the axis has been modified.
     *
     * @param paint the new crosshair paint.
     */
    public void setRangeCrosshairPaint(Paint paint) {
        this.rangeCrosshairPaint = paint;
        notifyListeners(new PlotChangeEvent(this));
    }

    /**
     * Returns the tool tip generator.
     *
     * @return the tool tip generator (possibly null).
     */
    public ContourToolTipGenerator getToolTipGenerator() {
        return this.toolTipGenerator;
    }

    /**
     * Sets the tool tip generator.
     *
     * @param generator  the tool tip generator (null permitted).
     */
    public void setToolTipGenerator(ContourToolTipGenerator generator) {

        //Object oldValue = this.toolTipGenerator;
        this.toolTipGenerator = generator;

    }

    /**
     * Returns the URL generator for HTML image maps.
     *
     * @return the URL generator (possibly null).
     */
    public XYURLGenerator getURLGenerator() {
        return this.urlGenerator;
    }

    /**
     * Sets the URL generator for HTML image maps.
     *
     * @param urlGenerator  the URL generator (null permitted).
     */
    public void setURLGenerator(XYURLGenerator urlGenerator) {

        //Object oldValue = this.urlGenerator;
        this.urlGenerator = urlGenerator;

    }

    /**
     * Draws a vertical line on the chart to represent a 'range marker'.
     *
     * @param g2  the graphics device.
     * @param plot  the plot.
     * @param domainAxis  the domain axis.
     * @param marker  the marker line.
     * @param dataArea  the axis data area.
     */
    public void drawDomainMarker(Graphics2D g2,
                                 ContourPlot plot,
                                 ValueAxis domainAxis,
                                 Marker marker,
                                 Rectangle2D dataArea) {

        double value = marker.getValue();
        Range range = domainAxis.getRange();
        if (!range.contains(value)) {
            return;
        }

        double x = domainAxis.translateValueToJava2D(marker.getValue(), dataArea, 
                                                     RectangleEdge.BOTTOM);
        Line2D line = new Line2D.Double(x, dataArea.getMinY(), x, dataArea.getMaxY());
        Paint paint = marker.getOutlinePaint();
        Stroke stroke = marker.getOutlineStroke();
        g2.setPaint(paint != null ? paint : Plot.DEFAULT_OUTLINE_PAINT);
        g2.setStroke(stroke != null ? stroke : Plot.DEFAULT_OUTLINE_STROKE);
        g2.draw(line);

    }

    /**
     * Draws a horizontal line across the chart to represent a 'range marker'.
     *
     * @param g2  the graphics device.
     * @param plot  the plot.
     * @param rangeAxis  the range axis.
     * @param marker  the marker line.
     * @param dataArea  the axis data area.
     */
    public void drawRangeMarker(Graphics2D g2,
                                ContourPlot plot,
                                ValueAxis rangeAxis,
                                Marker marker,
                                Rectangle2D dataArea) {

        double value = marker.getValue();
        Range range = rangeAxis.getRange();
        if (!range.contains(value)) {
            return;
        }

        double y = rangeAxis.translateValueToJava2D(marker.getValue(), dataArea, 
                                                    RectangleEdge.LEFT);
        Line2D line = new Line2D.Double(dataArea.getMinX(), y, dataArea.getMaxX(), y);
        Paint paint = marker.getOutlinePaint();
        Stroke stroke = marker.getOutlineStroke();
        g2.setPaint(paint != null ? paint : Plot.DEFAULT_OUTLINE_PAINT);
        g2.setStroke(stroke != null ? stroke : Plot.DEFAULT_OUTLINE_STROKE);
        g2.draw(line);

    }

    /**
     * Returns the clipPath.
     * @return ClipPath
     */
    public ClipPath getClipPath() {
        return clipPath;
    }

    /**
     * Sets the clipPath.
     * @param clipPath The clipPath to set
     */
    public void setClipPath(ClipPath clipPath) {
        this.clipPath = clipPath;
    }

    /**
     * Returns the ptSizePct.
     * @return double
     */
    public double getPtSizePct() {
        return ptSizePct;
    }

    /**
     * Returns the renderAsPoints.
     * @return boolean
     */
    public boolean isRenderAsPoints() {
        return renderAsPoints;
    }

    /**
     * Sets the ptSizePct.
     * @param ptSizePct The ptSizePct to set
     */
    public void setPtSizePct(double ptSizePct) {
        this.ptSizePct = ptSizePct;
    }

    /**
     * Sets the renderAsPoints.
     * @param renderAsPoints The renderAsPoints to set
     */
    public void setRenderAsPoints(boolean renderAsPoints) {
        this.renderAsPoints = renderAsPoints;
    }

    /**
     * Receives notification of a change to one of the plot's axes.
     *
     * @param event  information about the event.
     */
    public void axisChanged(AxisChangeEvent event) {
        Object source = event.getSource();
        if (source.equals(this.rangeAxis) || source.equals(this.domainAxis)) {
            ColorBar cba = (ColorBar) colorBar;
            if (colorBar.getAxis().isAutoRange()) {
                cba.getAxis().configure();
            }

        }
        super.axisChanged(event);
    }

    /**
     * Returns the visible z-range.
     *
     * @param data  the dataset.
     * @param x  the x range.
     * @param y  the y range.
     *
     * @return The range.
     */
    public Range visibleRange(ContourDataset data, Range x, Range y) {
        Range range = null;
        range = ((DefaultContourDataset) data).getZValueRange(x, y);
        return range;
    }

    /**
     * Returns the missingPaint.
     * @return Paint
     */
    public Paint getMissingPaint() {
        return missingPaint;
    }

    /**
     * Sets the missingPaint.
     * @param missingPaint The missingPaint to set
     */
    public void setMissingPaint(Paint missingPaint) {
        this.missingPaint = missingPaint;
    }
    
    /**
     * Multiplies the range on the horizontal axis/axes by the specified factor.
     * 
     * @param factor  the zoom factor.
     */
    public void zoomHorizontalAxes(double factor) {
        // zoom the domain axis
    }
    
    /**
     * Zooms the horizontal axes (not yet implemented).
     * 
     * @param lowerPercent  the new lower bound.
     * @param upperPercent  the new upper bound.
     */
    public void zoomHorizontalAxes(double lowerPercent, double upperPercent) {
        // zoom the domain axis
    }
    
    /**
     * Multiplies the range on the vertical axis/axes by the specified factor.
     * 
     * @param factor  the zoom factor.
     */
    public void zoomVerticalAxes(double factor) {
            // zoom the range axis
            // zoom all the secondary axes  
    }

    /**
     * Zooms the vertical axes (not yet implemented).
     * 
     * @param lowerPercent  the new lower bound.
     * @param upperPercent  the new upper bound.
     */
    public void zoomVerticalAxes(double lowerPercent, double upperPercent) {
        // zoom the domain axis
    }

}