else if (edge == RectangleEdge.LEFT) {
            axisLine = new Line2D.Double(cursor, dataArea.getY(), cursor,
                    dataArea.getMaxY());
        }
        else if (edge == RectangleEdge.RIGHT) {
            axisLine = new Line2D.Double(cursor, dataArea.getY(), cursor,
                    dataArea.getMaxY());