Indicator sometimes crashes the program

[Pabulon]

I mean that when on the chart is BarCounter indicator that prints bar numbers below bars and this indicator about which is this topic - after some amount of rebuilds of the chart - it crashes. If there is only BarCounter indicator or only this AAASR indicator - no crashes. NT8 have problems processing both of them simultanously on a single chart.

[NinjaTrader_ChelseaB]

Hello Pabulon,

I was assuming you were referring to the Bar Timer indicator included with NinjaTrader.

If you have a custom indicator you have created or imported, you would need to reduce and debug to identify what specific code is causing the behavior.

However, it sounds like you may have one script attempting to add drawing objects and one script trying to remove them at the same time.

[Pabulon]

It's pretty standard one I would say

#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.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 BarCounter : Indicator
    {
        private int _barCntr = 3;
        private int _currentHour = 0;
        private bool _colorHourBars = false;
        private bool _colorBar18Blue = false;
        private bool _showOddNumbers = true;
        private bool _showAllNumbers = false;
        private bool _onlyPlotToday = true;
        private Brush _textColorDefinedbyUser = Brushes.Gray;
        private int _pixelsAboveBelowBar = -50;
        private bool _textIsBelowBars = true;
        private int _fontSize = 14;
        SessionIterator _sessionIterator;      

        
    
        
        protected override void OnStateChange()
        {
            
            if (State == State.Historical)
            {
              //stores the sessions once bars are ready, but before OnBarUpdate is called
              _sessionIterator = new SessionIterator(Bars);
            }
            
              
            if (State == State.SetDefaults)
            {
                Description = @"Labels Bars by number from session start";
                Name = "BarCounter";
                Calculate = Calculate.OnBarClose;
                IsOverlay = true;
                DisplayInDataBox = false;
                DrawOnPricePanel = true;
                //DrawHorizontalGridLines                        = true;
                //DrawVerticalGridLines                        = false;
                PaintPriceMarkers = false;
                ScaleJustification = NinjaTrader.Gui.Chart.ScaleJustification.Right;
                //Disable this property if your indicator requires custom values that cumulate with each new market data event.
                //See Help Guide for additional information.
                IsSuspendedWhileInactive = true;
                TextColor = Brushes.Gray;
            
            }
            else if (State == State.Configure)
            {
                if (_pixelsAboveBelowBar > 0 && _textIsBelowBars == true)
                    _pixelsAboveBelowBar = _pixelsAboveBelowBar * -1;
            }
        }



        protected override void OnBarUpdate()
        {
            if(_onlyPlotToday)
            {
                _sessionIterator.GetNextSession(Time[0], true);
                TimeSpan ts = DateTime.Now - _sessionIterator.ActualTradingDayExchange;
                if(ts.Days == 0) //is today
                    PlotIndy();
            }
            else
            {
                PlotIndy();                
            }
        }

        
        private void PlotIndy()
        {
            double _textYStartingPoint = High[0]; //position text above or below bars
                if (_textIsBelowBars)
                    _textYStartingPoint = Low[0];            
            
            NinjaTrader.Gui.Tools.SimpleFont myFont = new NinjaTrader.Gui.Tools.SimpleFont("Courier New", 14) { Size = _fontSize, Bold = false };
            
            if (Bars.IsFirstBarOfSession) //start counting from first bar of session
            {
                _barCntr = 1;
                _currentHour = Time[0].Hour;
            }
            else
                _barCntr++;

            
            Brush _tmpBrush = _textColorDefinedbyUser;
            if(_colorHourBars)
            {
                if(Time[0].Hour > _currentHour)
                {
                    _tmpBrush = Brushes.Red;
                    _currentHour = Time[0].Hour;
                }
            }
            
            if(_colorBar18Blue)
            {
                if(_barCntr % 9 == 0)
                _tmpBrush = Brushes.Red;
            }
            
            if(_showAllNumbers)
            {
                    Draw.Text(this, "PO"+CurrentBar.ToString(), true, _barCntr.ToString(), 0, _textYStartingPoint, _pixelsAboveBelowBar, _tmpBrush, myFont, TextAlignment.Center, null, null, 1);
            }
            else if (_showOddNumbers)
            {
                if (_barCntr % 2 != 0) //is odd number
                    Draw.Text(this, "PO"+CurrentBar.ToString(), true, _barCntr.ToString(), 0, _textYStartingPoint, _pixelsAboveBelowBar, _tmpBrush, myFont, TextAlignment.Center, null, null, 1);
            }
            else
            {
                if (_barCntr % 3 == 0) //is even number
                    Draw.Text(this, "PO"+CurrentBar.ToString(), true, _barCntr.ToString(), 0, _textYStartingPoint, _pixelsAboveBelowBar, _tmpBrush, myFont, TextAlignment.Center, null, null, 1);
            }
            
        }
        
        
        #region Properties
        
        [NinjaScriptProperty]
        [Display(Name = "OnlyPlotToday", Description = "Plot Today Only", Order = 1, GroupName = "Visual")]
        public bool OnlyPlotToday
        {
            get { return _onlyPlotToday; }
            set { _onlyPlotToday = value; }
        }
        
        [NinjaScriptProperty]
        [Display(Name = "ShowOddNumbers", Description = "Show Odd or Even Numbers?", Order = 2, GroupName = "Visual")]
        public bool ShowOddNumbers
        {
            get { return _showOddNumbers; }
            set { _showOddNumbers = value; }
        }
        
        [NinjaScriptProperty]
        [Display(Name = "ShowAllNumbers", Description = "Show All Bar Numbers?", Order = 3, GroupName = "Visual")]
        public bool ShowAllNumbers
        {
            get { return _showAllNumbers; }
            set { _showAllNumbers = value; }
        }

        [NinjaScriptProperty]
        [XmlIgnore]
        [Display(Name = "TextColor", Description = "Text Color ", Order = 4, GroupName = "Visual")]
        public Brush TextColor
        {
            get { return _textColorDefinedbyUser; }
            set { _textColorDefinedbyUser = value; }
        }

        [Range(4, 40)]
        [NinjaScriptProperty]
        [Display(Name = "TextFontSize", Description = "Text Font Size", Order = 5, GroupName = "Visual")]
        public int TextFontSize
        {
            get { return _fontSize; }
            set { _fontSize = value; }
        }

        [Browsable(false)]
        public string TextColorSerializable
        {
            get { return Serialize.BrushToString(TextColor); }
            set { TextColor = Serialize.StringToBrush(value); }
        }

        [Range(0, 2000)]
        [NinjaScriptProperty]
        [Display(Name = "PixelsAboveBelow", Description = "Text Offset in Pixels from Bar", Order = 6, GroupName = "Visual")]
        public int PixelsAboveBelow
        {
            get { return Math.Abs(_pixelsAboveBelowBar); }
            set { _pixelsAboveBelowBar = value; }
        }

        [NinjaScriptProperty]
        [Display(Name = "TextIsBelowBars", Description = "Display Text Above/Below Bars", Order = 7, GroupName = "Visual")]
        public bool TextIsBelowBars
        {
            get { return _textIsBelowBars; }
            set { _textIsBelowBars = value; }
        }
        
        [NinjaScriptProperty]
        [Display(Name = "ColorHourBars", Description = "Display Text Above/Below Bars", Order = 8, GroupName = "Visual")]
        public bool ColorHourBars
        {
            get { return _colorHourBars; }
            set { _colorHourBars = value; }
        }

        [NinjaScriptProperty]
        [Display(Name = "ColorBar18Blue", Description = "Display Text Above/Below Bars", Order = 9, GroupName = "Visual")]
        public bool ColorBar18Blue
        {
            get { return _colorBar18Blue; }
            set { _colorBar18Blue = value; }
        }
        

        #endregion
    }
}​

[NinjaTrader_ChelseaB]

Hello Pabulon,

Reduce and debug.

Comment out code in your script. Confirm the behavior stops. Uncomment one line at at time until the behavior returns.

What is the specific line of code that is causing the behavior?