Page History: Fractal Sell/Down (Bill Williams)
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Page Revision: 2013/08/15 11:03
Syntax
public FractalDown(DataSeries ds, string description)
public static FractalDown Series(DataSeries ds)
Parameter Description
| ds |
Any DataSeries. Typically pass Bars.Low |
Description
Fractals per Bill Williams in 'Trading Chaos, Second Edition' are an indication of a change in market direction/behavior. An up (or buy) fractal is a minimum of 5-bar pattern where the center bar's low is less than the low of the two bars on either side of it. FractalDown returns the value of the most recent down/sell fractal as of the current bar.
See also:
FractalUp,
AlligatorInterpretation
A fractal "sell" occurs when price crosses below a down/sell fractal if it is below the
Alligator teeth at the time of the crossing. You can use fractal sell signals to sell long positions and/or to add short positions.
Example
The example plots the FractalUp and
FractalDown Series and also uses the
FractalUpBar and
FractalDownBar indicators to annotate the fractal bars.
using System;
using System.Collections.Generic;
using System.Text;
using System.Drawing;
using WealthLab;
using WealthLab.Indicators;
using Community.Indicators;
namespace WealthLab.Strategies
{
public class ShowFractalDemo : WealthScript
{
public void ShowFractals(DataSeries fractalupbars, DataSeries fractaludnbars)
{
Font _wing = new Font("Wingdings", 11, FontStyle.Bold); // used for Daily fractals
string _upFractal = Convert.ToChar(0x00D9).ToString();
string _dnFractal = Convert.ToChar(0x00DA).ToString();
for(int n = 5; n < fractalupbars.Count; n++)
{
if (fractalupbarsn > fractalupbarsn-1)
{
int fbar = (int)fractalupbarsn;
AnnotateBar(_upFractal, fbar, true, Color.Silver, Color.Transparent, _wing);
}
if (fractaludnbarsn > fractaludnbarsn-1)
{
int fbar = (int)fractaludnbarsn;
AnnotateBar(_dnFractal, fbar, false, Color.Silver, Color.Transparent, _wing);
}
}
}
protected override void Execute()
{
/* Fractals */
DataSeries frUpBar = FractalUpBar.Series(High);
DataSeries frDnBar = FractalDownBar.Series(Low);
ShowFractals(frUpBar, frDnBar);
DataSeries frUp = FractalUp.Series(High);
DataSeries frDn = FractalDown.Series(Low);
PlotSeries(PricePane, frUp, Color.Blue, LineStyle.Dots, 3);
PlotSeries(PricePane, frDn, Color.Fuchsia, LineStyle.Dots, 3);
}
}
}