When last bar is charged?

[Raymond]

Hi everybody!

I need to do some calculations with dataseries but only once and when the last bar is charged. I suppose it is something like backtesting...

The question is how I can know when is the last bar charged?

Thanks in advance, Raymomd (from Spain!).

[Raymond]

I solved. I don't know why but I access the last OnBarUpdate() when:

if (CurrentBar >= (Count - 2))

Regards!

[NinjaTrader_Austin]

Raymond, another approach would be something like this:

int prevBar;

OnBarUpdate()
{
    if (CurrentBar != prevBar)
    {
        prevBar = currentBar;
        // run your once per bar calculation.
    }
}

Also, there is FirstTickOfBar.

[Raymond]

Thanks Austin!

But I want to do the calculation only once, exactly when all the bars are charged on the screen. Not a calculation per bar.

[NinjaTrader_JoshP]

Raymond,

Not sure I follow. Bars are processed sequentially from the most left bar to the most right bar. There is no such processing of "once when all bars are done".

[Raymond]

I agree that "Bars are processed sequentially from the most left bar to the most right bar".

But I want to do "something" only once. I don't need to do the same "something" everytime OnBarUpdate() is called.

Only when the most right bar is calling OnBarUpdate() I will do "something". And one way could be:

if (CurrentBar >= (Count - 2))

It's not very elegant because in my opinion it should be:

if (CurrentBar >= (Count - 1))

But I have tested and it works.

Another question, perhaps I should open a new thread but anyway:
I am using Ninja Trader with Yahoo free datafeed for Spain market Ibex35 values. The problem is that data is different from the real market. For example today BBVA has closed in 9,88 € but Ninja Trader Close[0] supplied by Yahoo is telling me 10,15 €. The market closed here exactly 2 hours ago because here are 19:34, so the historical data should be OK.

I have configured Instrument manager with "Exchange" = mc (I don't know what it exactly means but I supposed that was 'Mercado Continuo', the name in Spain has the market) and "Ticker" = BBVA.MC.

Thanks in advance again!

[NinjaTrader_JoshP]

Raymond,

Where are you getting the 9,88 value from? NinjaTrader just passes whatever information Yahoo is providing onto the charts you see. I suggest you go to Yahoo and check out their prices as shown from there to make a comparison.

[Raymond]

I compare data from Yahoo web page and NinjaTrader. I am not configuring well Yahoo datafeed for Spanish market, that is the problem.

Do you know how to configure Ninja with Yahoo to obtain correct data?

Best regards, Raymond.

[NinjaTrader_JoshP]

Raymond,

This is the information on setting up the Yahoo connection. http://www.ninjatrader.com/webnew/support_Yahoo.htm

Once setup we are literally just taking whatever values Yahoo pushes our way.

[Raymond]

I have already configured in this way but my problem comes in next step:I am configuring wrong Instrument Manager.

Could you go deeper?

Thanks!

[Burns]

I have the same problem. The solution with:

if(CurrentBar<BarsRequired||CurrentBar<Count-1-(CalculateOnBarClose?1:0))
    return;

work only, if all bars are represented resp. the horizontal bar of the chart window is right. That's because the Count property contains the total bars but the CurrentBar property is only incremented until last represented bar. I can't find a property which contains only the total represented bars and not the total bars, have anyone a solution for this problem?

[Burns]

I have found a solution .
It's not documented but the following code work:

if(CurrentBar<BarsRequired||CurrentBar<Count-(CalculateOnBarClose?1:0)-(LastVisibleBar<0?0:LastVisibleBar)+(CalculateOnBarClose&&LastVisibleBar>0?1:0)-1)
    return;

The key is the LastVisibleBar, which contains a value with the number of bars which are not visibled .

[NinjaTrader_Austin]

Raymond, the ticker BBVA is the ticker for the company's shares listed on the NYSE. This is the ADR version of the stock you'd like to view. I have a feeling the difference is due to looking at the wrong instrument (the NYSE ticker vs the Spanish market's ticker).

[Raymond]

The ticker I think is OK, because it's name is BBVA.MC and is the same I can see in Yahoo web for Spanihs shares. But perhaps the exchange option is wrong configured at Instrument Manager.

Do you know which is the exchange for Spanish shares?

Thanks!!

[NinjaTrader_JoshP]

Unfortunately we would not know which exchange to use for your particular instrument.