Bars Array

[JerryWar]

In NT7 with CalculateonBarClose==True ex. High[0] accessed the already Closed Bar and when CalculateonBarClose=False High[0] accesses the Currently Building Bar. Is there any Method within NT8 to to access the Currently Building Bar information with CalculateOnBarClose ==True ? or Does my code have to Remember it.

Thanks
Jerry

[NinjaTrader_ChelseaB]

Hello Jerry,

The concept is the same in NinjaTrader 8. However, instead of CalculateOnBarClose being true or false, NT8 uses Calculate and this can have a value of OnBarClose, OnPriceChange, or OnEachTick.

Below is a link to the help guide on Calculate.

http://ninjatrader.com/support/helpGuides/nt8/en-us/calculate.htm

[JerryWar]

Yes , I misSpoke a bit. The reason I was suspecting that something was different is that I use 3 Time frames and BarsInProgress to with case statements to sort things out. When trying to use Bars.GetTime(CurrentBars[0]) while processing BarsInProgress==2 It generates an error telling me that an Object Reference is not set to an instance of an Object while if I use Bars.GetTime(currentBar[2]) while processing BarsInProgress==2 it has no problem. Previously in NT7 I handled all my drawObjects relative to CurrentBars[0] Regardless of BarsInProgress to get the finest chart placement for the objects. I did this using BarsAgo not time because using Bars in Real time gave better results.

Why am I experiencing an issue with this ? i.e. What is it I am missing or don't understand ?
Thanks
Jerry

[NinjaTrader_ChelseaB]

Hello Jerry,

I am unable to reproduce this behavior.

I have created a simple script to demonstrate. Are you able to reproduce the behavior using this simple test script?

[JerryWar]

You have the idea, but I was able to get the time using GetTime and print it but unable to use it a DrawLine. I will add the change and repeat the test. Possibly its my enviroment.

[NinjaTrader_ChelseaB]

Hello Jerry,

I have added a Draw.Line() call using the BarsArray[0].GetHigh(CurrentBars[0]) value.

I am still unable to reproduce an error.

Are you able to reproduce the error using the updated version of this script that draws a line?

[JerryWar]

So before I go do a whole bunch of Tesing.

While BarsInProgress was = 2, I was using:

StartTime = Bars.GetTime(CurrentBars[2]); which got the correct time worked. But when using
StartTIme = Bars.GetTime(CurrentBars[0]); which got the correct time it choked in the Drawline.

So is the Bars.GetTime only valid for the BarsInprogress being process but the BarsArray[0] valid
regardless of BarsInProgress ?

Jerry

[JerryWar]

Chelsea
Here is Code I used that generated Error. If you change currentBars[2] to currentBars[0] it will generate the error so I assume what I indicated before was correct that Using Bars.GetTime only works when it agrees with the BarsInProgress.

Jerry

[NinjaTrader_ChelseaB]

Hello Jerry,

When using Bars, this will refer to which ever bar is currently processing, indicated by the BarsInProgress value. This is the same for any other bar specific information like the Close series will refer to the currently processing series and will only return the Close for that currently processing series.

Are you attempting to get a value of a secondary series by calling Bars.GetTime from the currently processing series?
This is not going to work. A bars series will only contain values for that bar series. If you want a value from a different bars, you would need to use .GetTime from that bar series.