Beta: Indicator Documentation
Syntax
public Beta(Bars bars, Bars index, int period)
Parameter Description
| bars |
Primary Bars object |
| index |
The Bars object for your index symbol |
| period |
Lookback period |
Description
According to definition at
Investopedia, beta coefficient is a measure of the volatility (risk) of a security or a portfolio in comparison to the market as a whole.
Here we are using ^GSPC symbol of the S&P500 Index, suitable for Yahoo! data.
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()
{
Beta beta = Beta.Series( Bars, GetExternalSymbol("^GSPC",true),200); // Yahoo symbol
ChartPane betatest = CreatePane( 30, true, true );
PlotSeries( betatest, beta, Color.DarkMagenta, LineStyle.Solid, 2 );
}
}
}