Code presented in the article “Oscillators Rock!” by Sylvain Vervoort, in the September 2013 issue of Technical Analysis of Stocks & Commodities magazine.
SIDEBAR: Svezlrb PercB oscillator
// SVEZLRBPercB is Copyright (C) 2012, Sylvain Vervoort < stocata.org> .
// stocata.org reserves the right to modify this NinjaScript with each release.
// Release V1.0 December, 2012.
#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>
/// smoothed zero-lagging percent B indicator on a rainbow based price series.
/// Includes a slow modified stochastic following medium term moves.
/// < /summary>
[Description("Smoothed zero-lagging percent B indicator on rainbow price series.")]
public class SVEZLRBPercB : Indicator
{
#region Variables
private int stdevperiod = 18; // Default standard deviation look back period
private int smooth = 3; // Default TEMA/EMA smoothing average
private int periodK = 30; // Kperiod for Stochastics line
private int smoothK = 3; // Slowing K period
private DataSeries rainbow;
private DataSeries EMA1;
private DataSeries EMA2;
private DataSeries ZLRB;
private DataSeries den;
private DataSeries nom;
private DataSeries fastK;
private DataSeries RBC;
private double diff, rainbow_value;
#endregion
/// < summary>
/// Configuring the indicator called once before any bar data.
/// < /summary>
protected override void Initialize()
{
Add(new Plot(Color.FromKnownColor(KnownColor.DodgerBlue),PlotStyle.Line, "PB_Plot"));
Add(new Plot(Color.Red, "K"));
Add(new Line(Color.Gray, 100, "Overbought"));
Add(new Line(Color.Gray, 50, "Neutral"));
Add(new Line(Color.Gray, 0, "Oversold"));
Lines[0].Pen.DashStyle=DashStyle.Dot;
Lines[1].Pen.DashStyle=DashStyle.Dot;
Lines[1].Pen.Width=2;
Lines[2].Pen.DashStyle=DashStyle.Dot;
PaintPriceMarkers = false;
Overlay = false;
rainbow = new DataSeries(this);
EMA1 = new DataSeries(this);
EMA2 = new DataSeries(this);
ZLRB = new DataSeries(this);
den = new DataSeries(this);
nom = new DataSeries(this);
fastK = new DataSeries(this);
RBC = new DataSeries(this);
}
/// < summary>
/// Called on each bar update event (incoming tick)
/// < /summary>
protected override void OnBarUpdate()
{
if (CurrentBar < 1) // minimum 2 bars required
return;
// Create rainbow based data set
rainbow_value =
(5 * SMA(2)[0] +
4 * SMA(SMA(2), 2)[0] +
3 * SMA(SMA(SMA(2), 2), 2)[0] +
2 * SMA(SMA(SMA(SMA(2), 2), 2), 2)[0] +
SMA(SMA(SMA(SMA(SMA(2), 2), 2), 2), 2)[0] +
SMA(SMA(SMA(SMA(SMA(SMA(2), 2), 2), 2), 2), 2)[0] +
SMA(SMA(SMA(SMA(SMA(SMA(SMA(2), 2), 2), 2), 2), 2), 2)[0] +
SMA(SMA(SMA(SMA(SMA(SMA(SMA(SMA(2), 2), 2), 2), 2), 2), 2), 2)[0] +
SMA(SMA(SMA(SMA(SMA(SMA(SMA(SMA(SMA(2), 2), 2), 2), 2), 2), 2), 2), 2)[0] +
SMA(SMA(SMA(SMA(SMA(SMA(SMA(SMA(SMA(SMA(2), 2), 2), 2), 2), 2), 2), 2), 2), 2)[0]) / 20;
rainbow.Set(rainbow_value);
// Smoothing rainbow data in new data set ZLRB applying zero-lagging
EMA1.Set(EMA(rainbow, smooth)[0]);
EMA2.Set(EMA(EMA1, smooth)[0]);
diff = EMA1[0] - EMA2[0];
ZLRB.Set(EMA1[0] + diff);
// Plot percent B indicator from smoothed band at 2 standard deviations
PB_Plot.Set((TEMA(ZLRB, smooth)[0] + 2 * StdDev(TEMA(ZLRB, smooth), stdevperiod)[0] -
WMA(TEMA(ZLRB, smooth),stdevperiod)[0]) /
(4 * StdDev(TEMA(ZLRB, smooth), stdevperiod)[0]) * 100);
// Add a second plot for the slow stochastic
// Use a numerator/denominator based on an averaged new data series RBC
RBC.Set((rainbow[0] + Typical[0])/2);
nom.Set(RBC[0] - MIN(Low, periodK)[0]);
den.Set(MAX(High, periodK)[0] - MIN(RBC, periodK)[0]);
// Calculate and smooth the Stochastic indicator
if (den[0].Compare(0, 0.000000000001) == 0)
fastK.Set(CurrentBar == 0 ? 50 : fastK[1]);
else
fastK.Set(Math.Min(100, Math.Max(0, 100 * nom[0] / den[0])));
K.Set(SMA(fastK, smoothK)[0]);
}
#region Properties
[Browsable(false)] // prevents data series being displayed in properties
[XmlIgnore()] // ensures indicator can be saved as part of a template
public DataSeries PB_Plot
{
get { return Values[0]; }
}
/// < summary>
/// Gets the slow K value.
/// < /summary>
[Browsable(false)]
[XmlIgnore()]
public DataSeries K
{
get { return Values[1]; }
}
[Description("PercentB Standard Deviation Period DEF = 18")]
[Category("Parameters")]
[Gui.Design.DisplayName("1. PercentB Deviation Period")]
public int PercB_Deviation_Period
{
get { return stdevperiod; }
set { stdevperiod = Math.Max(1, value); }
}
[Description("PercentB smoothing average DEF = 3")]
[Category("Parameters")]
[Gui.Design.DisplayName("2. PercentB Average")]
public int PercB_Average
{
get { return smooth; }
set { smooth = Math.Max(1, value); }
}
/// < summary>
/// < /summary>
[Description("Bars used for calculating K value DEF = 30")]
[GridCategory("Parameters")]
[Gui.Design.DisplayName("3. Stochastic Period")]
public int Stochastic_Period
{
get { return periodK; }
set { periodK = Math.Max(1, value); }
}
/// < summary>
/// < /summary>
[Description("Bars for slowing basic K values DEF = 3")]
[GridCategory("Parameters")]
[Gui.Design.DisplayName("4. Stochastic Slowing")]
public int Stochastic_Slowing
{
get { return smoothK; }
set { smoothK = Math.Max(1, value); }
}
#endregion
}
}