EMA plus

[T2020]

Hi ,
I would like to create a 21 period EMA plus 20 cents . I see the regular EMA
in the Edit Ninja script box . Could I just copy that into a new script box and
add 20 cents some how ? tia .

[twtrader]

Yes, you can save it as a new file, and just add the 0.20 to the ema.

Hi ,
I would like to create a 21 period EMA plus 20 cents . I see the regular EMA
in the Edit Ninja script box . Could I just copy that into a new script box and
add 20 cents some how ? tia .

[NinjaTrader_Ray]

When you save it, open up the EMA, right click and select "Save As..." provide a new name. This will do some stuff to make the duplication easy for you.

[T2020]

So you copy this whole thing ? And paste it into "My custom indicator " ?
Where do you add the 20 cents ?
__________________________________________________ _________
//
// Copyright (C) 2006, NinjaTrader LLC <www.ninjatrader.com>.
// NinjaTrader reserves the right to modify or overwrite this NinjaScript component with each release.
//

#region Using declarations
using System;
using System.Diagnostics;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.ComponentModel;
using System.Xml.Serialization;
using NinjaTrader.Data;
using NinjaTrader.Gui.Chart;
#endregion

// This namespace holds all indicators and is required. Do not change it.
namespace NinjaTrader.Indicator
{
/// <summary>
/// Exponential Moving Average. The Exponential Moving Average is an indicator that shows the average value of a security's price over a period of time. When calculating a moving average. The EMA applies more weight to recent prices than the SMA.
/// </summary>
[Description("The Exponential Moving Average is an indicator that shows the average value of a security's price over a period of time. When calculating a moving average. The EMA applies more weight to recent prices than the SMA.")]
public class EMA : Indicator
{
#region Variables
private int period = 14;
#endregion

/// <summary>
/// This method is used to configure the indicator and is called once before any bar data is loaded.
/// </summary>
protected override void Initialize()
{
Add(new Plot(Color.Orange, "EMA"));

Overlay = true;
PriceTypeSupported = true;
}

/// <summary>
/// Called on each bar update event (incoming tick)
/// </summary>
protected override void OnBarUpdate()
{
Value.Set(CurrentBar == 0 ? Input[0] : Input[0] * (2.0 / (1 + Period)) + (1 - (2.0 / (1 + Period))) * Value[1]);
}

#region Properties
/// <summary>
/// </summary>
[Description("Numbers of bars used for calculations")]
[Category("Parameters")]
public int Period
{
get { return period; }
set { period = Math.Max(1, value); }
}
#endregion
}
}

#region NinjaScript generated code. Neither change nor remove.
// This namespace holds all indicators and is required. Do not change it.
namespace NinjaTrader.Indicator
{
/// <summary>
/// </summary>
public partial class Indicator : IndicatorBase
{
private EMA[] cacheEMA = null;
private static EMA checkEMA = new EMA();

/// <summary>
/// The Exponential Moving Average is an indicator that shows the average value of a security's price over a period of time. When calculating a moving average. The EMA applies more weight to recent prices than the SMA.
/// </summary>
/// <returns></returns>
public EMA EMA(int period)
{
return EMA(Input, period);
}

/// <summary>
/// The Exponential Moving Average is an indicator that shows the average value of a security's price over a period of time. When calculating a moving average. The EMA applies more weight to recent prices than the SMA.
/// </summary>
/// <returns></returns>
public EMA EMA(Data.IDataSeries input, int period)
{
checkEMA.Period = period;
period = checkEMA.Period;

if (cacheEMA != null)
for (int idx = 0; idx < cacheEMA.Length; idx++)
if (cacheEMA[idx].Period == period && cacheEMA[idx].EqualsInput(input))
return cacheEMA[idx];

EMA indicator = new EMA();
indicator.BarsRequired = BarsRequired;
indicator.CalculateOnBarClose = CalculateOnBarClose;
indicator.Input = input;
indicator.Period = period;
indicator.SetUp();

EMA[] tmp = new EMA[cacheEMA == null ? 1 : cacheEMA.Length + 1];
if (cacheEMA != null)
cacheEMA.CopyTo(tmp, 0);
tmp[tmp.Length - 1] = indicator;
cacheEMA = tmp;
Indicators.Add(indicator);

return indicator;
}
}
}

// This namespace holds all market analyzer column definitions and is required. Do not change it.
namespace NinjaTrader.MarketAnalyzer
{
/// <summary>
/// </summary>
public partial class Column : ColumnBase
{
/// <summary>
/// The Exponential Moving Average is an indicator that shows the average value of a security's price over a period of time. When calculating a moving average. The EMA applies more weight to recent prices than the SMA.
/// </summary>
/// <returns></returns>
[Gui.Design.WizardCondition("Indicator")]
public Indicator.EMA EMA(int period)
{
return _indicator.EMA(Input, period);
}

/// <summary>
/// The Exponential Moving Average is an indicator that shows the average value of a security's price over a period of time. When calculating a moving average. The EMA applies more weight to recent prices than the SMA.
/// </summary>
/// <returns></returns>
public Indicator.EMA EMA(Data.IDataSeries input, int period)
{
return _indicator.EMA(input, period);
}
}
}

// This namespace holds all strategies and is required. Do not change it.
namespace NinjaTrader.Strategy
{
/// <summary>
/// </summary>
public partial class Strategy : StrategyBase
{
/// <summary>
/// The Exponential Moving Average is an indicator that shows the average value of a security's price over a period of time. When calculating a moving average. The EMA applies more weight to recent prices than the SMA.
/// </summary>
/// <returns></returns>
[Gui.Design.WizardCondition("Indicator")]
public Indicator.EMA EMA(int period)
{
return _indicator.EMA(Input, period);
}

/// <summary>
/// The Exponential Moving Average is an indicator that shows the average value of a security's price over a period of time. When calculating a moving average. The EMA applies more weight to recent prices than the SMA.
/// </summary>
/// <returns></returns>
public Indicator.EMA EMA(Data.IDataSeries input, int period)
{
if (InInitialize && input == null)
throw new ArgumentException("You only can access an indicator with the default input/bar series from within the 'Initialize()' method");

return _indicator.EMA(input, period);
}
}
}
#endregion
_____________________________
thx

[NinjaTrader_JoshP]

T2020,

You don't need to copy paste anything. Open up the NinjaScript Editor for EMA. Right click anywhere in the Editor window and select "Save As". Type a new name and your new indicator will be ready for you to go.

The line you want to add the 20 cents to is here:
Value.Set(CurrentBar == 0 ? Input[0] : Input[0] * (2.0 / (1 + Period)) + (1 - (2.0 / (1 + Period))) * Value[1]);

into something like this

Value.Set(CurrentBar == 0 ? Input[0] : Input[0] * (2.0 / (1 + Period)) + (1 - (2.0 / (1 + Period))) * Value[1] + 20 * TickSize);

[T2020]

Thanks Josh ,
I did as you said ,but don't see the indicator listed anywhere . So I can't add
it to a chart . When I changed the name ,it said to make sure and change it
some place else as well . Not sure about that .? Need a tad more help . thx.

[T2020]

Thanks Josh ,
I did as you said ,but don't see the indicator listed anywhere . So I can't add
it to a chart . When I changed the name ,it said to make sure and change it
some place else as well . Not sure about that .? Need a tad more help . thx.

Anybody ? Sure I'm missing something simple ,but it isn't working so far .

[twtrader]

Anybody ? Sure I'm missing something simple ,but it isn't working so far .

So just to make sure we are on the same page,

(1) You did a "save as..." with a new filename.
(2) Hit the compile button and the indicator complied without an error
(3) Went to a chart and tried to add the indicator, but you did not see the name that you used in the "save as..."

Is that what you did ?

[T2020]

So just to make sure we are on the same page,

(1) You did a "save as..." with a new filename.
(2) Hit the compile button and the indicator complied without an error
(3) Went to a chart and tried to add the indicator, but you did not see the name that you used in the "save as..."

Is that what you did ?

Didn't know about the compiling . And the word " ticksize " doesn't work . tried
something else and now I've got it working .
Thank you much for the help .

[twtrader]

No problem,

Indicators are compiled in NT, so when you are writing them, you have to compile them first.

http://www.ninjatrader-support.com/HelpGuideV6/helpguide.html?Compile

Didn't know about the compiling . And the word " ticksize " doesn't work . tried
something else and now I've got it working .
Thank you much for the help .

[NinjaTrader_JoshP]

It is case sensitive. It is "TickSize" not "ticksize".

[T2020]

It is case sensitive. It is "TickSize" not "ticksize".

I see ,thanks for clearing that up . I just put + 0.02 , which on the mini Russel seems to give me the 20 cents / 2 ticks I was looking for . thx

[T2020]

T2020,

You don't need to copy paste anything. Open up the NinjaScript Editor for EMA. Right click anywhere in the Editor window and select "Save As". Type a new name and your new indicator will be ready for you to go.

The line you want to add the 20 cents to is here:
Value.Set(CurrentBar == 0 ? Input[0] : Input[0] * (2.0 / (1 + Period)) + (1 - (2.0 / (1 + Period))) * Value[1]);

into something like this

Value.Set(CurrentBar == 0 ? Input[0] : Input[0] * (2.0 / (1 + Period)) + (1 - (2.0 / (1 + Period))) * Value[1] + 20 * TickSize);

I was just wondering if there was a word that I could substitute for (+ 20 * TickSize) or the ( 0.02 )that I'm using now , to make the indicator adjustable once it's on the chart . I may want to add this to a larger time
frame and adjust the distance amount accordingly . thx

[NinjaTrader_Ray]

Sure, you can create a user defined input (property) that represents the "20".

Value.Set(CurrentBar == 0 ? Input[0] : Input[0] * (2.0 / (1 + Period)) + (1 - (2.0 / (1 + Period))) * Value[1] + userDefinedInput * TickSize);

See here - http://www.ninjatrader-support.com/v...ead.php?t=5782

[T2020]

Sure, you can create a user defined input (property) that represents the "20".

Value.Set(CurrentBar == 0 ? Input[0] : Input[0] * (2.0 / (1 + Period)) + (1 - (2.0 / (1 + Period))) * Value[1] + userDefinedInput * TickSize);

See here - http://www.ninjatrader-support.com/v...ead.php?t=5782

I get an error when I try this . "the name userDefinedInput does not exist
in this context " .. ???

Never mind , I see there's a ton of code to add which I don' understand .