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OnBalanceVolume

Summary

On Balance Volume measures buying and selling pressure as a cumulative indicator that adds volume on up days and subtracts volume on down days.

Signature 

1
public abstract interface OnBalanceVolume

Namespace

cAlgo.API.Indicators

Examples

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 private OnBalanceVolume _onBalanceVolume;
 [Parameter]
 public DataSeries Source { get; set; }
 [Output("Main")]
 public IndicatorDataSeries Result { get; set; }
 protected override void Initialize()
 {
    _onBalanceVolume = Indicators.OnBalanceVolume(Source);
 }
 public override void Calculate(int index)
 {
    // Display Result of Indicator
    Result[index] = _onBalanceVolume.Result[index];
 }

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 using cAlgo.API;
 using cAlgo.API.Indicators;
 namespace cAlgo.Robots
 {
     // This sample cBot shows how to use the On Balance Volume indicator
     [Robot(TimeZone = TimeZones.UTC, AccessRights = AccessRights.None)]
     public class OnBalanceVolumeSample : Robot
     {
         private double _volumeInUnits;
         private OnBalanceVolume _onBalanceVolume;
         private SimpleMovingAverage _simpleMovingAverage;
         [Parameter("Volume (Lots)", DefaultValue = 0.01)]
         public double VolumeInLots { get; set; }
         [Parameter("Stop Loss (Pips)", DefaultValue = 10)]
         public double StopLossInPips { get; set; }
         [Parameter("Take Profit (Pips)", DefaultValue = 10)]
         public double TakeProfitInPips { get; set; }
         [Parameter("Label", DefaultValue = "Sample")]
         public string Label { get; set; }
         public Position[] BotPositions
         {
             get
             {
                 return Positions.FindAll(Label);
             }
         }
         protected override void OnStart()
         {
             _volumeInUnits = Symbol.QuantityToVolumeInUnits(VolumeInLots);
             _onBalanceVolume = Indicators.OnBalanceVolume(Bars.ClosePrices);
             _simpleMovingAverage = Indicators.SimpleMovingAverage(_onBalanceVolume.Result, 9);
         }
         protected override void OnBar()
         {
             if (_onBalanceVolume.Result.HasCrossedAbove(_simpleMovingAverage.Result, 0))
             {
                 ClosePositions(TradeType.Sell);
                 ExecuteMarketOrder(TradeType.Buy, SymbolName, _volumeInUnits, Label, StopLossInPips, TakeProfitInPips);
             }
             else if (_onBalanceVolume.Result.HasCrossedBelow(_simpleMovingAverage.Result, 0))
             {
                 ClosePositions(TradeType.Buy);
                 ExecuteMarketOrder(TradeType.Sell, SymbolName, _volumeInUnits, Label, StopLossInPips, TakeProfitInPips);
             }
         }
         private void ClosePositions(TradeType tradeType)
         {
             foreach (var position in BotPositions)
             {
                 if (position.TradeType != tradeType) continue;
                 ClosePosition(position);
             }
         }
     }
 }

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 import clr
 clr.AddReference("cAlgo.API")
 from cAlgo.API import *
 class Test():    
     def initialize(self):
         # Source is a parameter defined in C# file of indicator
         self.onBalanceVolume = api.Indicators.OnBalanceVolume(api.Source)
     def calculate(self, index):
         # Result is an indicator output defined in C# file of indicator
         api.Result[index] = self.onBalanceVolume.Result[index]

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 import clr
 clr.AddReference("cAlgo.API")
 # Import cAlgo API types
 from cAlgo.API import *
 # Import trading wrapper functions
 from robot_wrapper import *
 class OnBalanceVolumeSample():
     def on_start(self):
         self.volumeInUnits = api.Symbol.QuantityToVolumeInUnits(api.VolumeInLots)
         self.onBalanceVolume = api.Indicators.OnBalanceVolume(api.Bars.ClosePrices);
         self.simpleMovingAverage = api.Indicators.SimpleMovingAverage(self.onBalanceVolume.Result, api.PeriodsSimpleMovingAverage);
     def on_bar_closed(self):
         if Functions.HasCrossedAbove(self.onBalanceVolume.Result, self.simpleMovingAverage.Result, 0):
             self.close_positions(TradeType.Sell)
             api.ExecuteMarketOrder(TradeType.Buy, api.SymbolName, self.volumeInUnits, api.Label, api.StopLossInPips, api.TakeProfitInPips)
         elif Functions.HasCrossedBelow(self.onBalanceVolume.Result, self.simpleMovingAverage.Result, 0):
             self.close_positions(TradeType.Buy)
             api.ExecuteMarketOrder(TradeType.Sell, api.SymbolName, self.volumeInUnits, api.Label, api.StopLossInPips, api.TakeProfitInPips)
     def get_bot_positions(self):
         return api.Positions.FindAll(api.Label)
     def close_positions(self, tradeType):
         for position in self.get_bot_positions():
             if position.TradeType != tradeType:
                 continue
             api.ClosePosition(position)

Properties

Result

Summary

Gets or sets the time series of the On Balance Volume indicator.

Signature 

1
public abstract IndicatorDataSeries Result {get; set;}

Return Value

IndicatorDataSeries

Examples

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 private OnBalanceVolume _onBalanceVolume;
 [Parameter]
 public DataSeries Source { get; set; }
 protected override void OnStart()
 {
     _onBalanceVolume = Indicators.OnBalanceVolume(Source);
 }
 protected override void OnBar()
 {
     var currentValue = _onBalanceVolume.Result.LastValue;
     //...
 }

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 import clr
 clr.AddReference("cAlgo.API")
 from cAlgo.API import *
 class Test():    
     def initialize(self):
         # Source is a parameter defined in C# file of indicator
         self.onBalanceVolume = api.Indicators.OnBalanceVolume(api.Source)
     def calculate(self, index):
         currentValue = self.onBalanceVolume.Result.LastValue