ChartFibonacciRetracement

 using cAlgo.API;
 namespace cAlgo
 {
     // This indicator shows how to use the Chart.DrawFibonacciRetracement method to draw a Fibonacci Retracement
     [Indicator(IsOverlay = true, TimeZone = TimeZones.UTC, AccessRights = AccessRights.None)]
     public class FibonacciRetracementSample : Indicator
     {
         protected override void Initialize()
         {
             var period = Chart.LastVisibleBarIndex - Chart.FirstVisibleBarIndex;
             var max = Bars.HighPrices.Maximum(period);
             var min = Bars.LowPrices.Minimum(period);
             Chart.DrawFibonacciRetracement("FibonacciRetracement", Chart.FirstVisibleBarIndex, max, Chart.LastVisibleBarIndex, min, Color.Red);
         }
         public override void Calculate(int index)
         {
         }
     }
 }

 import clr
 clr.AddReference("cAlgo.API")
 from cAlgo.API import *
 class Test():
     def initialize(self):
         period = api.Chart.LastVisibleBarIndex - api.Chart.FirstVisibleBarIndex
         maxValue = Functions.Maximum(api.Bars.HighPrices, period)
         minValue = Functions.Minimum(api.Bars.LowPrices, period)
         api.Chart.DrawFibonacciRetracement("FibonacciRetracement", api.Chart.FirstVisibleBarIndex, maxValue, api.Chart.LastVisibleBarIndex, minValue, Color.Red)