Syntax
public BBandLower2(DataSeries source, int period, double stdDevs, StdDevCalculation sd, string description)
public static BBandLower2 Series(DataSeries source, int period, double stdDevs, StdDevCalculation sd)
Parameter Description
| source |
Price series |
| period |
Indicator calculation period |
| stdDevs |
Number of standard deviations |
| sd |
Standard deviation calculation: Population or Sample |
Description
See
BBandLower.
This version extends the WL5's native implementation of Bollinger Bands with the ability to specify a Standard Deviation calculation method - Population (hardcoded in WL5's Bollinger Bands) or Sample.
Example
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 MyStrategy : WealthScript
{
protected override void Execute()
{
PlotSeries( PricePane, BBandLower2.Series( Close, 20, 2.00, StdDevCalculation.Sample ), Color.DarkBlue, LineStyle.Solid, 2 );
// Flag bars that have penetrated the lower BBand calculated using the Sample method
for(int bar = 20; bar < Bars.Count; bar++)
{
if( Bars.Low[bar] < BBandLower2.Series( Close, 20, 2.0, StdDevCalculation.Sample )[bar] )
SetBarColor( bar, Color.Lime );
}
}
}
}