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# HMA (Hull MA)

### Hull MA (HMA): Indicator Documentation

====Syntax====
`DataSeries HullMA( DataSeries Series, int Period);`

### Parameter Description

 Series Data series used to produce the HMA calculation Period Period to average the data series

### Description

The Hull Moving Average (HMA) was created by trader, businessman, mathematician, and IT expert Alan Hull. It is a combination of weighted moving averages (WMA) designed to be more responsive to current price fluctuations while still smoothing prices.

Alan Hull's description of HMA

### Example

This example illustrates how to construct and plot the HMA.

```using System;
using System.Collections.Generic;
using System.Text;
using System.Drawing;
using WealthLab;
using WealthLab.Indicators;namespace WealthLab.Strategies
{
public class HullMA : DataSeries
{
public HullMA ( DataSeries ds, int period ) : base(ds, "HullMA")
{
DataSeries SlowWMA = WMA.Series( ds, period );
DataSeries FastWMA = WMA.Series( ds, (int)(period/2) );
DataSeries hma = WMA.Series( ( FastWMA + ( FastWMA - SlowWMA ) ), (int)Math.Sqrt(period) );

for (int bar = period; bar < ds.Count; bar++)
{
this[bar] = hma[bar];
}
}		public static HullMA Series( DataSeries ds, int period )
{
HullMA _hma = new HullMA( ds, period );
return _hma;
}
}	public class HMAStrategy : WealthScript
{
private StrategyParameter paramPeriod;

public HMAStrategy()
{
paramPeriod = CreateParameter( "Period", 20, 2, 100, 1 );
}

protected override void Execute()
{
HullMA hma = new HullMA( Close, paramPeriod.ValueInt );
PlotSeries( PricePane, hma, Color.Blue, WealthLab.LineStyle.Solid, 1 );
}
}
}```
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