     /// :param: yAxisDuration duration for animating the y axis
     public func animate(#yAxisDuration: NSTimeInterval)
     {
-        animate(xAxisDuration: 0.0, yAxisDuration: yAxisDuration, easing: nil);
+        animate(xAxisDuration: 0.0, yAxisDuration: yAxisDuration, easingOption: .EaseInOutSine);
     }
 }
    /// :param: xAxisDuration duration for animating the x axis
    public func animate(#xAxisDuration: NSTimeInterval)
    {
        animate(xAxisDuration: xAxisDuration, yAxisDuration: 0.0, easing: nil);
    }
    
    /// Animates the drawing / rendering of the chart the y-axis with the specified animation time.

    /// :param: yAxisDuration duration for animating the y axis
    public func animate(#xAxisDuration: NSTimeInterval, yAxisDuration: NSTimeInterval)
    {
        animate(xAxisDuration: xAxisDuration, yAxisDuration: yAxisDuration, easingOption: .EaseInOutSine);
    }
    
    /// Animates the drawing / rendering of the chart the x-axis with the specified animation time.
