Bars.Count and CurrentBar Question

[miker]

I'm working with historical data only and noticed the following values on the last OnBarUpdate() call:

Bars.Count: 1782
CurrentBar: 1780

I painted the CurrentBar and noticed it was the second from the last closed bar, not the last as I expected it to be.

So my question is first why isn'tt OnBarUpdate fired on bar 1781 (the real last bar) and why bar 1780 the last bar?

And why isn't Bars.Count not equal to CurrentBar on the last bar?

NT7Beta18 if it matters....

[NinjaTrader_Art]

I'm working with historical data only and noticed the following values on the last OnBarUpdate() call:

Bars.Count: 1782
CurrentBar: 1780

I painted the CurrentBar and noticed it was the second from the last closed bar, not the last as I expected it to be.

So my question is first why isn'tt OnBarUpdate fired on bar 1781 (the real last bar) and why bar 1780 the last bar?

And why isn't Bars.Count not equal to CurrentBar on the last bar?

NT7Beta18 if it matters....

Hi miker,

CurrentBar is zero based index, so if Bars.Count is 1782, the "very last CurrentBar" will be 1781.

If CalculateOnBarClose is set to "true", then CurrentBar is 1780 since very last bar on the chart is not closed until new bar is opened.

[miker]

So I guess the correct question is why is the "very last bar on the chart is not closed until new bar is opened"? If bar 1781 is closed and CalculateOnBarClose is set to "true", why wait??.I don't get it...

[NinjaTrader_Bertrand]

miker, this is expected in NT as charts are build event based, not time based - the bar is opend if a new tick is received.

[miker]

i get that it's event based....so if bar 1781 CLOSES and CalculateOnBarClose is TRUE, then there's your event...so again, why wait until the next bar opens?

[NinjaTrader_Bertrand]

miker, because the old bar does not close until you receive the opening tick of the new bar.