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< > BotCompany Repo | #1036559 // MAIndicator [simple moving average, trading indicator]

JavaX fragment (include) [tags: use-pretranspiled]

Libraryless. Click here for Pure Java version (18000L/103K).

persistable sclass MAIndicator extends CandleBasedIndicator<Double> is IntegrityCheckable {
  // The MA calculator
  settable SimpleMovingAverage ma;
  
  // MA values collected as ticker
  gettable TickerSequence history = new TickerSequence("MA");
  
  // MA value
  double value = Double.NaN;
  
  Double value() { ret value; }

  *(int *length) {}

  {
    length = 7;
    
    onCandleAdded((IVF1<TradingCandle>) candle -> {
      if (ma == null) makeMA();
      
      ma.add(candle.close());
      value = ma.complete() ? ma! : Double.NaN;
      if (!isNaN(value)) {
        long time = candle.endTime().toLong();
        history?.addIfPriceChanged(value, time);
      }
    });
  }
  
  TickerSequence asTicker(L<TradingCandle> candles) {
    feed(candles);
    ret history;
  }
  
  void makeMA {
    ma = new SimpleMovingAverage(length);
  }
  
  void reset :: after {
    resetFields(this, "value history");
    makeMA();
  }
  
  public void integrityCheck {
    history?.integrityCheck();
  }
}

Author comment

Began life as a copy of #1036532

download  show line numbers  debug dex  old transpilations   

Travelled to 2 computer(s): mqqgnosmbjvj, wnsclhtenguj

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Snippet ID: #1036559
Snippet name: MAIndicator [simple moving average, trading indicator]
Eternal ID of this version: #1036559/5
Text MD5: 292ddb487d922fd01b0cbf4097639e65
Transpilation MD5: 0adc610d9e1e7b8a0c269a66659a7943
Author: stefan
Category: javax / trading
Type: JavaX fragment (include)
Public (visible to everyone): Yes
Archived (hidden from active list): No
Created/modified: 2023-03-17 20:47:01
Source code size: 1053 bytes / 47 lines
Pitched / IR pitched: No / No
Views / Downloads: 26 / 59
Version history: 4 change(s)
Referenced in: [show references]