Indicator doesn't show up and no data in the data box are showing under the indicator

[christopher512]

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.Gui.Tools;
using NinjaTrader.Data;
using NinjaTrader.NinjaScript;
using NinjaTrader.NinjaScript.Indicators;
using NinjaTrader.Core.FloatingPoint;
using NinjaTrader.NinjaScript.DrawingTools;
#endregion

// This namespace holds Indicators in this folder and is required. Do not change it.
namespace NinjaTrader.NinjaScript.Indicators
{
public class CustomLinesIndicator : Indicator
{
private Series<double> upperLine;
private Series<double> lowerLine;

protected override void OnStateChange()
{
if (State == State.SetDefaults)
{
Description = "Custom Lines Indicator";
Name = "CustomLinesIndicator";
Calculate = Calculate.OnBarClose;
IsOverlay = true;
DisplayInDataBox = true;
DrawOnPricePanel = true;

AddPlot(Brushes.Green, "UpperLine");
AddPlot(Brushes.Red, "LowerLine");
}
else if (State == State.DataLoaded)
{
upperLine = new Series<double>(this);
lowerLine = new Series<double>(this);
}
}

protected override void OnBarUpdate()
{
double smoothingFactor = 2.0 / (14 + 1); // EMA smoothing factor
double emaValue = Close[0]; // Initial EMA value
double upperValue = 0;
double lowerValue = 0;

if (CurrentBar == 0) // Skip calculation for the first bar
{
upperLine[0] = upperValue;
lowerLine[0] = lowerValue;
return;
}

for (int i = 1; i < CurrentBar + 1; i++)
{
emaValue = Close[i] * smoothingFactor + emaValue * (1 - smoothingFactor);
}

upperValue = emaValue * 1.5 + High[0];
lowerValue = Low[0] - emaValue * 1.5;

upperLine[0] = upperValue;
lowerLine[0] = lowerValue;
}
}
}

region NinjaScript generated code. Neither change nor remove.

namespace NinjaTrader.NinjaScript.Indicators
{
public partial class Indicator : NinjaTrader.Gui.NinjaScript.IndicatorRenderBase
{
private CustomLinesIndicator[] cacheCustomLinesIndicator;
public CustomLinesIndicator CustomLinesIndicator()
{
return CustomLinesIndicator(Input);
}

public CustomLinesIndicator CustomLinesIndicator(ISeries<double> input)
{
if (cacheCustomLinesIndicator != null)
for (int idx = 0; idx < cacheCustomLinesIndicator.Length; idx++)
if (cacheCustomLinesIndicator[idx] != null && cacheCustomLinesIndicator[idx].EqualsInput(input))
return cacheCustomLinesIndicator[idx];
return CacheIndicator<CustomLinesIndicator>(new CustomLinesIndicator(), input, ref cacheCustomLinesIndicator);
}
}
}

namespace NinjaTrader.NinjaScript.MarketAnalyzerColumns
{
public partial class MarketAnalyzerColumn : MarketAnalyzerColumnBase
{
public Indicators.CustomLinesIndicator CustomLinesIndicator()
{
return indicator.CustomLinesIndicator(Input);
}

public Indicators.CustomLinesIndicator CustomLinesIndicator(ISeries<double> input )
{
return indicator.CustomLinesIndicator(input);
}
}
}

namespace NinjaTrader.NinjaScript.Strategies
{
public partial class Strategy : NinjaTrader.Gui.NinjaScript.StrategyRenderBase
{
public Indicators.CustomLinesIndicator CustomLinesIndicator()
{
return indicator.CustomLinesIndicator(Input);
}

public Indicators.CustomLinesIndicator CustomLinesIndicator(ISeries<double> input )
{
return indicator.CustomLinesIndicator(input);
}
}
}

#endregion

[NinjaTrader_BrandonH]

Hello christopher512,

Thanks for your post.

When testing the code you shared it seems the plots are evaluating to n/a in the Data Box window which means they hold no value.

Have you added debugging prints to your script to understand exactly how it is behaving and calculating values?

To truly know what is causing the issue it would be necessary to use prints and debug by looking at all of the information the script is using for decisions. Add debugging prints to the indicator script that print out all the values being used for calculations and the Time[0] to see how it is calculating logic.

Below is a link to a forum post that demonstrates how to use prints to understand behavior.
https://ninjatrader.com/support/foru...121#post791121