Hello!
I have an issue with inconsistency of indicator calculated values and chart values.
This could be my omission, but please help me to understand:
here is the code :

package jforex;
import java.util.*;
import com.dukascopy.api.*;
import com.dukascopy.api.IIndicators.MaType;
public class StochCheck implements IStrategy {
   private IEngine engine;
   private IConsole console;
   private IHistory history;
   private IContext context;
   private IIndicators indicators;
   private IUserInterface userInterface;
   
   public void onStart(IContext context) throws JFException {
      this.engine = context.getEngine();
      this.console = context.getConsole();
      this.history = context.getHistory();
      this.context = context;
      this.indicators = context.getIndicators();
      this.userInterface = context.getUserInterface();
   }
   public void onAccount(IAccount account) throws JFException {}
   public void onMessage(IMessage message) throws JFException {}
   public void onStop() throws JFException {}
   public void onTick(Instrument instrument, ITick tick) throws JFException {}
    public void onBar(Instrument instrument, Period period, IBar askBar, IBar bidBar) throws JFException {
        if(period!=Period.ONE_HOUR){return;}
        double[] tmp = context.getIndicators().stoch(instrument, Period.ONE_HOUR, OfferSide.BID, 40, 3, MaType.SMA, 3, MaType.SMA, 0);
        IChart chart = context.getChart(instrument);
        if (chart != null) {
            IChartObject chartObject = chart.draw("X" + bidBar.getTime(), IChart.Type.TIMEMARKER, bidBar.getTime(), bidBar.getHigh());
            chartObject.setText(tmp[0] + "");
        }
   }
}

There i'm using stoch with 40,3,3,SMA,SMA , the same I put into chart, but values doesn't match.
I also tried to set shift index to 1 instead of 0, but it's doesn't help.

Please advice.

Hi,

Try it out with shift = 1 instead of 0. 0 = currently forming candle and 1 = the last formed candle.

double[] tmp = context.getIndicators().stoch(instrument, Period.ONE_HOUR, OfferSide.BID, 40, 3, MaType.SMA, 3, MaType.SMA, 1);

regards,
Kirilla

Thank you! But as I mentioned I already tried with 0 and 1 and 2 it's doesn't help.
It looks as some major bug in indicators system.
Please advice.

Hi,

I've checked this and it wroked fine.

package jforex;
import java.util.*;
import com.dukascopy.api.*;
import com.dukascopy.api.IIndicators.MaType;
public class StochCheck implements IStrategy {
   private IEngine engine;
   private IConsole console;
   private IHistory history;
   private IContext context;
   private IIndicators indicators;
   private IUserInterface userInterface;
   
   public void onStart(IContext context) throws JFException {
      this.engine = context.getEngine();
      this.console = context.getConsole();
      this.history = context.getHistory();
      this.context = context;
      this.indicators = context.getIndicators();
      this.userInterface = context.getUserInterface();
   }
   public void onAccount(IAccount account) throws JFException {}
   public void onMessage(IMessage message) throws JFException {}
   public void onStop() throws JFException {}
   public void onTick(Instrument instrument, ITick tick) throws JFException {}
    public void onBar(Instrument instrument, Period period, IBar askBar, IBar bidBar) throws JFException {
        if(period!=Period.ONE_HOUR){return;}
        
        double[] tmp = context.getIndicators().stoch(instrument, Period.ONE_HOUR, OfferSide.BID, 40, 3, MaType.SMA, 3, MaType.SMA, 1);
        IChart chart = context.getChart(instrument);
        if (chart != null) {
            IChartObject chartObject = chart.draw("X" + bidBar.getTime(), IChart.Type.TIMEMARKER, bidBar.getTime(), bidBar.getHigh());
            chartObject.setText(tmp[0] + "");
        }
        
        for(int i = 0; i < tmp.length ;i++){
            this.console.getOut().println(i+". " + tmp[i]);
        }
   }
}

I set the shift to 1, because when it is 0 it will change with every tick. I turn off every filter on my chart(flat and sunday) and I set chart shows Bid price. the first item of tmp will be Slow %K and the second Slow %D. Both of those value were equal with indicator on the chart.

14:10:10 1. 89.58511805677955 (Slow %D)
14:10:10 0. 92.2306560627457 (Slow %K)


regards,
Kirilla