Simulated Data Feed - CalculateOnBarClose

[BigWaveDave]

Hi:

When running the simulated data feed with CalculateOnBarClose = false, my OnBarUpdate callback is only being called for historical data.

I understand that I'll only get single events for historical data, but I don't get tick by tick events for current bar.

I this a known issue with the simulator? I must be missing something.

Thx

[BigWaveDave]

Errr... It seems to be working now...

There an issue in here somewhere... If I can pin it down to an NT bug, I'll let you know...

So, nevermind...

Thanks,

[BigWaveDave]

Ok,

BarsRequired apparently defaults to some value like 10 or 20...

OnBarUpdate won't be called until that many bars has been 'simulated'.

Setting it to 0... didn't seem to work... locked NT up hard when adding the indicator to a chart.

I guess the best I can do is set it to 1? How do I get OnBarUpdate called for the 1st bar?

[NinjaTrader_Bertrand]

Correct, BarsRequired defaults to 20. All it would have to satisfied for all series you potentially call in your script.

This can be programmatically as well in the script's Initialize() :

http://www.ninjatrader.com/support/helpGuides/nt7/barsrequired2.htm

[Harry]

Ok,

BarsRequired apparently defaults to some value like 10 or 20...

OnBarUpdate won't be called until that many bars has been 'simulated'.

Setting it to 0... didn't seem to work... locked NT up hard when adding the indicator to a chart.

I guess the best I can do is set it to 1? How do I get OnBarUpdate called for the 1st bar?

It is possible to set BarsRequired to 0. BarsRequired suppresses the plot during the initial phase, but has no further impact on the execution of OnBarUpdate() unless you use it in the code. A typical example would be

if(CurrentBar < BarsRequired)
    return;

In that case OnBarUpdate() will only be executed after BarsRequired is exceeded.

If NT locks up hard, you will need to examine your code, you should find the reason there.