using ENUM in strategy from Indicator

[tkaboris]

Hi I have indicator with ENUM and I want to have strategy that selects ENUM from indicator.
If we take an example of SampleUniversalMovingAverage

https://ninjatrader.com/support/helpguides/nt8/NT%20HelpGuide%20English.html?creating_a_user-defined_parame.htm

it has enum for MA.

If I want to create a strategy that also selects ENUM for MA without me having to define all logic of enum from indicator.

I understand that in strategy I still need to create ENUM,but how do i modify switch statement so only SMA or EMA or HMA is selected without defining values. Because values are defined in indicator already.




private CustomEnumNamespace.UniversalMovingAverage maType = CustomEnumNamespace.UniversalMovingAverage.SMA;


protected override void OnBarUpdate()
{
// We use a switch which allows NinjaTrader to only execute code pertaining to our case
switch (maType)
{
// If the maType is defined as an EMA then...
case CustomEnumNamespace.UniversalMovingAverage.EMA:
{
// Sets the plot to be equal to the EMA's plot
Value[0] = (EMA(Period)[0]);
break;
}

// If the maType is defined as a HMA then...
case CustomEnumNamespace.UniversalMovingAverage.HMA:
{
// Sets the plot to be equal to the HMA's plot
Value[0] = (HMA(Period)[0]);
break;
}

// If the maType is defined as a SMA then...
case CustomEnumNamespace.UniversalMovingAverage.SMA:
{
// Sets the plot to be equal to the SMA's plot
Value[0] = (SMA(Period)[0]);
break;
}

// If the maType is defined as a WMA then...
case CustomEnumNamespace.UniversalMovingAverage.WMA:
{
// Sets the plot to be equal to the WMA's plot
Value[0] = (WMA(Period)[0]);
break;
}
}
}


public CustomEnumNamespace.UniversalMovingAverage MAType
{
get { return maType; }
set { maType = value; }
}

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

[NinjaTrader_ChelseaB]

Hello tkaboris,

You want to call the SampleUniversalMovingAverage indicator from your strategy?

The MAType and Period public variables will need the [NinjaScriptProperty] attribute added so that these are added as overload parameters.

https://ninjatrader.com/support/helpGuides/nt8/ninjascriptpropertyattribute.htm

Once added, you can call the script and supply these values as parameters.

private SampleUniversalMovingAverage myIndy;

In State.DataLoaded:

myIndy = SampleUniversalMovingAverage(CustomEnumNamespace.UniversalMovingAverage.EMA, 14);

[tkaboris]

Something is going on with forum. I cant post anything for last 4 hours, it returns 403 or 401 error

[tkaboris]

right but what if I just want user to select wchich MA via enum in strategy?
Do i need to create a swithc for that in strategy? if so how will that look like?

[NinjaTrader_ChelseaB]

Hello tkaboris,

An enum is just a value. If you want to trigger logic based on that value, you would have to do that in the script.

To see what this would look like, have a look at lines 52 to 86 in the SampleUniversalMovingAverage reference sample linked below.

https://ninjatrader.com/support/helpGuides/nt8/creating_a_user-defined_parame.htm

[tkaboris]

I am lost at this switch, could you please correct me of how i need to define in example

//
//
// Copyright (C) 2024, 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.Collections.Generic;
using System.ComponentModel;
using System.ComponentModel.DataAnnotations;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Input;
using System.Windows.Media;
using System.Xml.Serialization;
using NinjaTrader.Cbi;
using NinjaTrader.Gui;
using NinjaTrader.Gui.Chart;
using NinjaTrader.Gui.SuperDom;
using NinjaTrader.Data;
using NinjaTrader.NinjaScript;
using NinjaTrader.Core.FloatingPoint;
using NinjaTrader.NinjaScript.Indicators;
using NinjaTrader.NinjaScript.DrawingTools;
#endregion

//This namespace holds strategies in this folder and is required. Do not change it.
namespace NinjaTrader.NinjaScript.Strategies
{
    public class SampleMACrossOverCopy : Strategy
    {
        private SMA smaFast;
        private SMA smaSlow;
        private SampleUniversalMovingAverage myIndy;
        private CustomEnumNamespaceMA.UniversalMovingAverage    maType    = CustomEnumNamespaceMA.UniversalMovingAverage.SMA;

        protected override void OnStateChange()
        {
            if (State == State.SetDefaults)
            {
                Description    = NinjaTrader.Custom.Resource.NinjaScriptStrategyDescriptionSampleMACrossOver;
                Name        = "SampleMACrossOverCopy";
                Fast        = 10;
                Slow        = 25;
                // This strategy has been designed to take advantage of performance gains in Strategy Analyzer optimizations
                // See the Help Guide for additional information
                IsInstantiatedOnEachOptimizationIteration = false;
            }
            else if (State == State.DataLoaded)
            {
                smaFast = SMA(Fast);
                smaSlow = SMA(Slow);

                smaFast.Plots[0].Brush = Brushes.Goldenrod;
                smaSlow.Plots[0].Brush = Brushes.SeaGreen;

                AddChartIndicator(smaFast);
                AddChartIndicator(smaSlow);
                myIndy = SampleUniversalMovingAverage(CustomEnumNamespace.UniversalMovingAverage.EMA, 14);
            }
        }

        protected override void OnBarUpdate()
        {
            if (CurrentBar < BarsRequiredToTrade)
                return;
            
            
            switch (maType)
            {
                // If the maType is defined as an EMA then...
                case CustomEnumNamespaceMA.UniversalMovingAverage.EMA:
                {
                    // Sets the plot to be equal to the EMA's plot
                    Value[0] = (EMA(Period)[0]);
                    break;
                }
                
                // If the maType is defined as a HMA then...
                case CustomEnumNamespaceMA.UniversalMovingAverage.HMA:
                {
                    // Sets the plot to be equal to the HMA's plot
                    Value[0] = (HMA(Period)[0]);
                    break;
                }
                
                // If the maType is defined as a SMA then...
                case CustomEnumNamespaceMA.UniversalMovingAverage.SMA:
                {
                    // Sets the plot to be equal to the SMA's plot
                    Value[0] = (SMA(Period)[0]);
                    break;
                }
                
                // If the maType is defined as a WMA then...
                case CustomEnumNamespaceMA.UniversalMovingAverage.WMA:
                {
                    // Sets the plot to be equal to the WMA's plot
                    Value[0] = (WMA(Period)[0]);
                    break;
                }
            }
            

            if (CrossAbove(smaFast, smaSlow, 1))
                EnterLong();
            else if (CrossBelow(smaFast, smaSlow, 1))
                EnterShort();
        }

        #region Properties
        [Range(1, int.MaxValue), NinjaScriptProperty]
        [Display(ResourceType = typeof(Custom.Resource), Name = "Fast", GroupName = "NinjaScriptStrategyParameters", Order = 0)]
        public int Fast
        { get; set; }

        [Range(1, int.MaxValue), NinjaScriptProperty]
        [Display(ResourceType = typeof(Custom.Resource), Name = "Slow", GroupName = "NinjaScriptStrategyParameters", Order = 1)]
        public int Slow
        { get; set; }
        #endregion
    }
}

namespace CustomEnumNamespaceMA
{
    public enum UniversalMovingAverage
    {
        EMA,
        HMA,
        SMA,
        WMA,
    }
}​
}

[NinjaTrader_ChelseaB]

Hello tkaboris,

What are you needing assistance with?

Is there an error message you would like assistance with?

Is the value of maType not what you expect?

Where have you set the maType variable's value?