ChartAxis.defaultInterval Property
        
 Gets or sets the interval between labels, tick marks and grid lines if not already set for those elements.
 
         
        Property Value
        
Type: Number
        Value may be null.
        
        
 
        Remarks
        
 If set to null, the interval is automatically calculated and can be accessed from the
 autoInterval property. If set to Number.POSITIVE_INFINITY, the interval
 will equal the length of the scale.