Could someone help me with this my indicator keeps crashing and I don't know why. I load it onto a forex chart and it crashes. Thanks for advice.
Code:
#region Using declarations
using System;
using System.ComponentModel;
using System.Diagnostics;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Xml.Serialization;
using NinjaTrader.Cbi;
using NinjaTrader.Data;
using NinjaTrader.Gui.Chart;
#endregion
// This namespace holds all indicators and is required. Do not change it.
namespace NinjaTrader.Indicator
{
/// <summary>
/// Lookback period finder
/// </summary>
[Description("Lookback period finder")]
public class PeriodFinder : Indicator
{
#region Variables
// Wizard generated variables
private int stdevPeriod = 20; // Default setting for StdevPeriod
private int minlen = 7; // Default setting for Minlen
private int maxlen = 28; // Default setting for Maxlen
// User defined variables (add any user defined variables below)
#endregion
/// <summary>
/// This method is used to configure the indicator and is called once before any bar data is loaded.
/// </summary>
protected override void Initialize()
{
if (minlen > maxlen)
{
Print("Minimum length must be less than maximum length.");
}
Add(new Plot(Color.FromKnownColor(KnownColor.Red), PlotStyle.Line, "Period"));
CalculateOnBarClose = true;
Overlay = false;
}
/// <summary>
/// Called on each bar update event (incoming tick)
/// </summary>
protected override void OnBarUpdate()
{
if (CurrentBar < Math.Max(stdevPeriod, maxlen))
{
return;
}
DataSeries std_data = new DataSeries(StdDev(stdevPeriod));
double v1 = StdDev(stdevPeriod)[0];
double v2 = MAX(std_data, stdevPeriod)[0];
double v3 = MIN(std_data, stdevPeriod)[0];
double v4 = ((v1-v3)/(v2-v3));
double currlen = minlen + (maxlen - minlen) * (1-v4);
Period.Set(currlen);
}
#region Properties
[Browsable(false)] // this line prevents the data series from being displayed in the indicator properties dialog, do not remove
[XmlIgnore()] // this line ensures that the indicator can be saved/recovered as part of a chart template, do not remove
public DataSeries Period
{
get { return Values[0]; }
}
[Description("")]
[GridCategory("Parameters")]
public int StdevPeriod
{
get { return stdevPeriod; }
set { stdevPeriod = Math.Max(1, value); }
}
[Description("")]
[GridCategory("Parameters")]
public int Minlen
{
get { return minlen; }
set { minlen = Math.Max(1, value); }
}
[Description("")]
[GridCategory("Parameters")]
public int Maxlen
{
get { return maxlen; }
set { maxlen = Math.Max(1, value); }
}
#endregion
}
}
#region NinjaScript generated code. Neither change nor remove.
// This namespace holds all indicators and is required. Do not change it.
namespace NinjaTrader.Indicator
{
public partial class Indicator : IndicatorBase
{
private PeriodFinder[] cachePeriodFinder = null;
private static PeriodFinder checkPeriodFinder = new PeriodFinder();
/// <summary>
/// Lookback period finder
/// </summary>
/// <returns></returns>
public PeriodFinder PeriodFinder(int maxlen, int minlen, int stdevPeriod)
{
return PeriodFinder(Input, maxlen, minlen, stdevPeriod);
}
/// <summary>
/// Lookback period finder
/// </summary>
/// <returns></returns>
public PeriodFinder PeriodFinder(Data.IDataSeries input, int maxlen, int minlen, int stdevPeriod)
{
if (cachePeriodFinder != null)
for (int idx = 0; idx < cachePeriodFinder.Length; idx++)
if (cachePeriodFinder[idx].Maxlen == maxlen && cachePeriodFinder[idx].Minlen == minlen && cachePeriodFinder[idx].StdevPeriod == stdevPeriod && cachePeriodFinder[idx].EqualsInput(input))
return cachePeriodFinder[idx];
lock (checkPeriodFinder)
{
checkPeriodFinder.Maxlen = maxlen;
maxlen = checkPeriodFinder.Maxlen;
checkPeriodFinder.Minlen = minlen;
minlen = checkPeriodFinder.Minlen;
checkPeriodFinder.StdevPeriod = stdevPeriod;
stdevPeriod = checkPeriodFinder.StdevPeriod;
if (cachePeriodFinder != null)
for (int idx = 0; idx < cachePeriodFinder.Length; idx++)
if (cachePeriodFinder[idx].Maxlen == maxlen && cachePeriodFinder[idx].Minlen == minlen && cachePeriodFinder[idx].StdevPeriod == stdevPeriod && cachePeriodFinder[idx].EqualsInput(input))
return cachePeriodFinder[idx];
PeriodFinder indicator = new PeriodFinder();
indicator.BarsRequired = BarsRequired;
indicator.CalculateOnBarClose = CalculateOnBarClose;
#if NT7
indicator.ForceMaximumBarsLookBack256 = ForceMaximumBarsLookBack256;
indicator.MaximumBarsLookBack = MaximumBarsLookBack;
#endif
indicator.Input = input;
indicator.Maxlen = maxlen;
indicator.Minlen = minlen;
indicator.StdevPeriod = stdevPeriod;
Indicators.Add(indicator);
indicator.SetUp();
PeriodFinder[] tmp = new PeriodFinder[cachePeriodFinder == null ? 1 : cachePeriodFinder.Length + 1];
if (cachePeriodFinder != null)
cachePeriodFinder.CopyTo(tmp, 0);
tmp[tmp.Length - 1] = indicator;
cachePeriodFinder = tmp;
return indicator;
}
}
}
}
// This namespace holds all market analyzer column definitions and is required. Do not change it.
namespace NinjaTrader.MarketAnalyzer
{
public partial class Column : ColumnBase
{
/// <summary>
/// Lookback period finder
/// </summary>
/// <returns></returns>
[Gui.Design.WizardCondition("Indicator")]
public Indicator.PeriodFinder PeriodFinder(int maxlen, int minlen, int stdevPeriod)
{
return _indicator.PeriodFinder(Input, maxlen, minlen, stdevPeriod);
}
/// <summary>
/// Lookback period finder
/// </summary>
/// <returns></returns>
public Indicator.PeriodFinder PeriodFinder(Data.IDataSeries input, int maxlen, int minlen, int stdevPeriod)
{
return _indicator.PeriodFinder(input, maxlen, minlen, stdevPeriod);
}
}
}
// This namespace holds all strategies and is required. Do not change it.
namespace NinjaTrader.Strategy
{
public partial class Strategy : StrategyBase
{
/// <summary>
/// Lookback period finder
/// </summary>
/// <returns></returns>
[Gui.Design.WizardCondition("Indicator")]
public Indicator.PeriodFinder PeriodFinder(int maxlen, int minlen, int stdevPeriod)
{
return _indicator.PeriodFinder(Input, maxlen, minlen, stdevPeriod);
}
/// <summary>
/// Lookback period finder
/// </summary>
/// <returns></returns>
public Indicator.PeriodFinder PeriodFinder(Data.IDataSeries input, int maxlen, int minlen, int stdevPeriod)
{
if (InInitialize && input == null)
throw new ArgumentException("You only can access an indicator with the default input/bar series from within the 'Initialize()' method");
return _indicator.PeriodFinder(input, maxlen, minlen, stdevPeriod);
}
}
}
#endregion
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