Error accc

[firstlanetech]

I am trying iterate throught the High and Low price series loop in the OnRender() event. When I try to access the High (or any series) I get an out-of-range error from the 2nd element onwards (i = 1)

I have listed the simplified code below.

protected override void OnRender(ChartControl cc, ChartScale cs)
{
     if( State != State.Realtime ) return;  // Wait till we are real-time.                             
     for(int i = 0; i < Bars.Count; i++)
     {
          Print(string.Format("High [{0}] = {1}. Current Bar = {2}, Bars.Count = {3}", i, 
                                         Instrument.MasterInstrument.FormatPrice(High[Bars.Count - i - 1]), CurrentBar, Bars.Count));
     }
}

Here is the output window result.The first line (blue) is correct, and an out-of-range exception happens after that.

High [0] = 177.92. Current Bar = 250, Bars.Count = 251
Indicator 'InsideOutsideBar': Error on calling 'OnRender' method on bar 250: You are accessing an index with a value that is invalid since it is out-of-range.


I notice that it fails from i = 1 onwards. However, the value of Bars.Count is 251, and the size of High <double> series is also 251.

Is my code correct ? What am I missing ?

[firstlanetech]

PLEASE IGNORE MY POST. I found the correct solution using ChartBars.FromIndex, ChartBars.ToIndex and High.GetValueAt()

[NinjaTrader_ChelseaB]

Hello firstlanetech,

I am glad you were able to find a solution.

As a heads up, when in non-data-driven methods such as OnRender(), you will need to use TriggerCustomEvent() or Bars.GetHigh() .

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

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