Enum Declarations

[cshep]

Hi I have a question about enum declarations.

Do I need to declare them outside the Indicator/Strategy class or can I declare them inside the class?

It appears that some of my code has enum declarations inside the class. Sometimes it works and sometimes it doesn't. I'm not sure what is going on here.

I took a look at your SampleUniversalMovingAverage example and I see that the enum is declared outside of the class.

Thanks,

CS

[NinjaTrader_Dexter]

Hello cshep,

Thank you for your post.

We support the way an enum is used in the mentioned sample, created in the namespace. Try to name it something unique, that coorelates with the indicator name to avoid namespace pollution (all indicators are compiled together into one assembly).

There has been a discussion on enum usage in indicators, you can see the thread here: http://www.ninjatrader.com/support/f...ad.php?t=37521

Please let me know if I can assist any further.

[jupiejupe]

i have an indicator that has an enum, and i want to use them in a strategy. the indicator has five different conditions, neutral, longmarket, shortmarket, longlimit & shortlimit.

the indicator name is Thunder
the enum name is OrderLogic
Neutral
LongMarket
ShortMarket
LongLimit
ShortLimit
when ever the indicator value's one of these conditions i want the strategy to place an order. but i can not figure out how to call the enum's into the strategy?

using the wizard i have gotten this far, but i knew and know that won't match the value of the enum.

// Condition set 3
if (Thunder(3, 5, 3, 13, 0, NinjaTrader.Indicator.OperatingMode.Oscillator, 233, 0.33).Umbrella[0] == LongMarket) ¿¿¿"Thunder.OrderLogic.LongMarket"???
{
ExitShort("Exit", "");
EnterLong(DefaultQuantity, "LongMarket");
}

[NinjaTrader_Brett]

Jupie,

Thanks for the post.

However this falls under communication between strategies or in your case communication between strategy and indicator. Which unfortunately we do not provide support for and is outside of the scope we are able to provide support for.

If you need the indicator data in the strategy you will need to copy the indicator code into the strategy so it runs natively in the strategy. This would be the supported method to do this.

Let me know if I can be of further assistance.

[jupiejupe]

However this falls under communication between strategies or in your case communication between strategy and indicator. Which unfortunately we do not provide support for and is outside of the scope we are able to provide support for.

really than why is there a ADD()

If you need the indicator data in the strategy you will need to copy the indicator code into the strategy so it runs natively in the strategy. This would be the supported method to do this.

this does not seem like it something that can be done via the wizard so there most be another supported ways.

Let me know if I can be of further assistance.

that would be nice

[NinjaTrader_Dexter]

Hello jupiejupe,

You can achieve this in the most straightforward manner by declaring your enum in the NinjaTrader.Indicator namespace, but not in your class. Be sure to name it something unique, preferably with a similar name prefix as your strategy, as everything is in one namespace for indicators and strategies respectively and you want to avoid naming conflicts.

Once that is done you can access it by using the enumeration directly in your strategy, e.g.
OrderLogic Something;
// stuff
if(Something == OrderLogic.Neutral)

Here is a link to a post with a sample of doing this, built from the SampleUniversalMovingAverage example: http://www.ninjatrader.com/support/f...02&postcount=9

Please let me know if I can assist any further.

[jupiejupe]

thank you so much this will point me in the correct direction. an thank you so much for given a straight answer, i really appreciate the guidance.

[NinjaTrader_Dexter]

Hi jupiejupe,

You are most welcome,

Just let us know if we can assist you with any other NinjaTrader inquiries.

[cshep]

Thanks Dexter, I followed the advice given in the post you recommended and I wrapped all of my enums in separate namespaces to avoid namespace pollution. I did this for all indicators and strategies.

This seems to be working well. Do you foresee any problems with this? It doesn't seem to be a NinjaTrader recommended practice.

Any thoughts on having all enums in a common namespace under UserDefinedMethods or something similar?

Thanks,

CS

[NinjaTrader_Dexter]

Hi cshep,

Thank you for your reply.

While we cannot provide support for this method, I do not see how any issues aside from naming conflict could come up with this approach.

Please let me know if I can assist you any further.

[brucelevy]

Hi, I am trying to utilize the SampleUniversalMovingAverage Indicator code in a strategy. I understand how to use it for an indicator but I'm having difficulty using it in a strategy. I would like to have the option in the strategy settings to select which type of stop loss method to use. i.e. set stop loss to an SMA or EMA

A very simple example on how to use this with either an SMA or EMA on a long entry would be perfect to get me started.

[NinjaTrader_AlanS]

Hello brucelevy,

Thanks for writing in to our Support team.

You will want to do this in your switch statements and adjust depending on which MAType you are using.

For example, using the code provided in the SamleUniversalMovingAverage.cs from our references thread:

//create a variable to hold the moving average type
private UniversalMovingAverage matype = UniversalMovingAverage.SMA;

protected override void OnBarUpdate()
{
switch (matype)
case UniversalMovingAverage.SMA:
{
// set your stop loss based on an SMA value
SetStopLoss(SMA(20));
}

Please let me know if I may be of any further assistance.

[brucelevy]

I am getting this error: https://gyazo.com/d34b91207c283c010d1fb44ecd8bf484

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

// This namespace holds all strategies and is required. Do not change it.
namespace NinjaTrader.Strategy
{
    /// <summary>
    /// Enter the description of your strategy here
    /// </summary>
    [Description("Enter the description of your strategy here")]
    public class matypetest : Strategy
    {
        #region Variables
      private UniversalMovingAverage	matype	= UniversalMovingAverage.SMA;
		private int				period	= 14;
        #endregion

        /// <summary>
        /// This method is used to configure the strategy and is called once before any strategy method is called.
        /// </summary>
        protected override void Initialize()
        {
            CalculateOnBarClose = true;
        }

        /// <summary>
        /// Called on each bar update event (incoming tick)
        /// </summary>
        protected override void OnBarUpdate()
        {
			
			switch (matype)
			{
			
case UniversalMovingAverage.SMA:
{
// set your stop loss based on an SMA value
SetStopLoss(SMA(20));
}

case UniversalMovingAverage.HMA:
		{
			// Sets the plot to be equal to the HMA's plot
			SetStopLoss(HMA(20));				
		}


			}


        }

        #region Properties
        		// Creates the user definable parameter for the moving average type.
		[Description("Choose a Moving Average type.")]
		[Category("Parameters")]
		public UniversalMovingAverage MAType
		{
			get { return matype; }
			set { matype = value; }
		}
		
		[Description("Numbers of bars used for calculations")]
		[Category("Parameters")]
		public int Period
		{
			get { return period; }
			set { period = Math.Max(1, value); }
		}
        #endregion
    }
} 
public enum UniversalMovingAverage
{
	EMA,
	HMA,
	SMA,
	WMA,
}

[koganam]

I am getting this error: https://gyazo.com/d34b91207c283c010d1fb44ecd8bf484

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

// This namespace holds all strategies and is required. Do not change it.
namespace NinjaTrader.Strategy
{
    /// <summary>
    /// Enter the description of your strategy here
    /// </summary>
    [Description("Enter the description of your strategy here")]
    public class matypetest : Strategy
    {
        #region Variables
      private UniversalMovingAverage	matype	= UniversalMovingAverage.SMA;
		private int				period	= 14;
        #endregion

        /// <summary>
        /// This method is used to configure the strategy and is called once before any strategy method is called.
        /// </summary>
        protected override void Initialize()
        {
            CalculateOnBarClose = true;
        }

        /// <summary>
        /// Called on each bar update event (incoming tick)
        /// </summary>
        protected override void OnBarUpdate()
        {
			
			switch (matype)
			{
			
case UniversalMovingAverage.SMA:
{
// set your stop loss based on an SMA value
SetStopLoss(SMA(20));
}

case UniversalMovingAverage.HMA:
		{
			// Sets the plot to be equal to the HMA's plot
			SetStopLoss(HMA(20));				
		}


			}


        }

        #region Properties
        		// Creates the user definable parameter for the moving average type.
		[Description("Choose a Moving Average type.")]
		[Category("Parameters")]
		public UniversalMovingAverage MAType
		{
			get { return matype; }
			set { matype = value; }
		}
		
		[Description("Numbers of bars used for calculations")]
		[Category("Parameters")]
		public int Period
		{
			get { return period; }
			set { period = Math.Max(1, value); }
		}
        #endregion
    }
} 
public enum UniversalMovingAverage
{
	EMA,
	HMA,
	SMA,
	WMA,
}

You, or someone else whose code you are using, has already defined the enum UniversalMovingAverage in the global namespace. Call the one that you are defining here something else.

That is neither the neatest, nor most sensible way to tackle the issue, but that is the only NT-approved way.

[NinjaTrader_AlanS]

Hello brucelevy,

Thanks for your reply.

koganam is correct in saying that you have already defined an enum by the name of UniversalMovingAverage if you are receiving this error - I would recommend that you add this enum in a custom namespace like so:

//implement this namespace outside of the NinjaTrader.Strategy namespace

namespace _UniversalMovingAverageEnums
{

public enum UniversalMovingAverage
{
EMA,
HMA,
SMA,
WMA
}
}

You would retrieve the enum contained in this namespace like so:
switch (matype)
{
case _UniversalMovingAverageEnums.UniversalMovingAverag e.HMA
{
//set stop loss based on HMA value
SetStopLoss(HMA(20));
}
}

Please let me know if I may be of any further assistance.