Candlestick Patterns

Long Line Candle

Introduction

Create a new Long Line Candle candlestick pattern indicator to indicate the pattern's presence.

To view the implementation of this candlestick pattern, see the LEAN GitHub repository.

Using LongLineCandle Indicator

To create an automatic indicators for LongLineCandle, call the LongLineCandle helper method from the QCAlgorithm class. The LongLineCandle method creates a LongLineCandle object, hooks it up for automatic updates, and returns it so you can used it in your algorithm. In most cases, you should call the helper method in the Initialize method.

public class LongLineCandleAlgorithm : QCAlgorithm
{
    private Symbol _symbol;
    private LongLineCandle _longlinecandle;

    public override void Initialize()
    {
        _symbol = AddEquity("SPY", Resolution.Daily).Symbol;
        _longlinecandle = CandlestickPatterns.LongLineCandle(_symbol);
    }

    public override void OnData(Slice data)
    {
        if (_longlinecandle.IsReady)
        {
            // The current value of _longlinecandle is represented by itself (_longlinecandle)
            // or _longlinecandle.Current.Value
            Plot("LongLineCandle", "longlinecandle", _longlinecandle);
            
        }
    }
}
class LongLineCandleAlgorithm(QCAlgorithm):
    def Initialize(self) -> None:
        self.symbol = self.AddEquity("SPY", Resolution.Daily).Symbol
        self.longlinecandle = self.CandlestickPatterns.LongLineCandle(self.symbol)

    def OnData(self, slice: Slice) -> None:
        if self.longlinecandle.IsReady:
            # The current value of self.longlinecandle is represented by self.longlinecandle.Current.Value
            self.Plot("LongLineCandle", "longlinecandle", self.longlinecandle.Current.Value)
            

The following reference table describes the LongLineCandle method:

LongLineCandle()1/1

            LongLineCandle QuantConnect.Algorithm.CandlestickPatterns.LongLineCandle (
    Symbol                                symbol,
    *Nullable<Decimal>              resolution,
    *Func<IBaseData, IBaseDataBar>  selector
   )
        

Creates a new LongLineCandle pattern indicator. The indicator will be automatically updated on the given resolution.

If you don't provide a resolution, it defaults to the security resolution. If you provide a resolution, it must be greater than or equal to the resolution of the security. For instance, if you subscribe to hourly data for a security, you should update its indicator with data that spans 1 hour or longer.

For more information about the selector argument, see Alternative Price Fields.

For more information about plotting indicators, see Plotting Indicators.

You can manually create a LongLineCandle indicator, so it doesn't automatically update. Manual indicators let you update their values with any data you choose.

Updating your indicator manually enables you to control when the indicator is updated and what data you use to update it. To manually update the indicator, call the Update method with a TradeBar. The indicator will only be ready after you prime it with enough data.

public class LongLineCandleAlgorithm : QCAlgorithm
{
    private Symbol _symbol;
    private LongLineCandle _longlinecandle;

    public override void Initialize()
    {
        _symbol = AddEquity("SPY", Resolution.Daily).Symbol;
        _longlinecandle = new LongLineCandle();
    }

    public override void OnData(Slice data)
    {
        if (data.Bars.TryGetValue(_symbol, out var bar))
        {      
            _longlinecandle.Update(bar);
        }
    
        if (_longlinecandle.IsReady)
        {
            // The current value of _longlinecandle is represented by itself (_longlinecandle)
            // or _longlinecandle.Current.Value
            Plot("LongLineCandle", "longlinecandle", _longlinecandle);
            
        }
    }
}
class LongLineCandleAlgorithm(QCAlgorithm):
    def Initialize(self) -> None:
        self.symbol = self.AddEquity("SPY", Resolution.Daily).Symbol
        self.longlinecandle = LongLineCandle()

    def OnData(self, slice: Slice) -> None:
        bar = slice.Bars.get(self.symbol)
        if bar:
            self.longlinecandle.Update(bar)
                
        if self.longlinecandle.IsReady:
            # The current value of self.longlinecandle is represented by self.longlinecandle.Current.Value
            self.Plot("LongLineCandle", "longlinecandle", self.longlinecandle.Current.Value)
            

To register a manual indicator for automatic updates with the security data, call the RegisterIndicator method.

public class LongLineCandleAlgorithm : QCAlgorithm
{
    private Symbol _symbol;
    private LongLineCandle _longlinecandle;

    public override void Initialize()
    {
        _symbol = AddEquity("SPY", Resolution.Daily).Symbol;
        _longlinecandle = new LongLineCandle();
        RegisterIndicator(_symbol, _longlinecandle, Resolution.Daily);
    }

    public override void OnData(Slice data)
    {
        if (_longlinecandle.IsReady)
        {
            // The current value of _longlinecandle is represented by itself (_longlinecandle)
            // or _longlinecandle.Current.Value
            Plot("LongLineCandle", "longlinecandle", _longlinecandle);
            
        }
    }
}
class LongLineCandleAlgorithm(QCAlgorithm):
    def Initialize(self) -> None:
        self.symbol = self.AddEquity("SPY", Resolution.Daily).Symbol
        self.longlinecandle = LongLineCandle()
        self.RegisterIndicator(self.symbol, self.longlinecandle, Resolution.Daily)

    def OnData(self, slice: Slice) -> None:
        if self.longlinecandle.IsReady:
            # The current value of self.longlinecandle is represented by self.longlinecandle.Current.Value
            self.Plot("LongLineCandle", "longlinecandle", self.longlinecandle.Current.Value)
            

The following reference table describes the LongLineCandle constructor:

LongLineCandle()1/2

            LongLineCandle QuantConnect.Indicators.CandlestickPatterns.LongLineCandle (
    string  name
   )
        

Initializes a new instance of the LongLineCandle class using the specified name.

LongLineCandle()2/2

            LongLineCandle QuantConnect.Indicators.CandlestickPatterns.LongLineCandle (
    
   )
        

Initializes a new instance of the LongLineCandle class.

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