how to get historical data

[UMLer]

Hi,
Let's say that there is a scenario:
Market could open at 9AM everyday, and I turn on my computer and launch NinjaTrader at 2PM everyday.
So I want to get those historical data from 9AM to 2PM on same day (sometime need more data yesteray)
is it possible to get those data programmatically or just download directly?

Thanks

[NinjaTrader_Jesse]

Hello UMLer,

That should happen automatically when you connect and subscribe to that instrument by using a chart or any other tool which requests historical data. There is nothing in your cod that would need to be changed to use the historical data in the platform.

[UMLer]

Questions 1:
I remember there is a array, something like this:
on a 15min candle chart:
Bars[0] means last candle bar, time is 9:15 AM, Bars[1] is the second to last candle bar. time is 9:00AM, right?

I guess i can read close price like below:
float thePrice = Bars[0].ClosePrice;

Question 2:
I want to get historical data dependence on different time frame. such as 15min, 1hr, 10s. how to do it?
have to open different time frame charts?

Thanks

[NinjaTrader_Jesse]

Hello UMLer,

Questions 1:
I remember there is a array, something like this:
on a 15min candle chart:
Bars[0] means last candle bar, time is 9:15 AM, Bars[1] is the second to last candle bar. time is 9:00AM, right?

You can use BarsAgo like that, not specifically on the Bars object but on other series like Close: Close[0] or Close[1]

I guess i can read close price like below:

double thePrice = Close[0];

Question 2:
I want to get historical data dependence on different time frame. such as 15min, 1hr, 10s. how to do it?
have to open different time frame charts?

Before moving into multi timeframes I would suggest reading the following document:

https://ninjatrader.com/support/help...lightsub=multi

You will need to use AddDataSeries for that task.

[UMLer]

Thanks
If I use BarsAgo or Close array then I can visit every element by index. what i want to is to get data 10 days ago.
Of course I still can visit every element by index and check date and time until reach those data i want. But is there
a way to visit elements by date and time directly ?

[NinjaTrader_Jesse]

Hello UMLer,

If you know a specific time that exists in the series you can search for that time to get the bar index, https://ninjatrader.com/support/help...ightsub=getbar

That returns an Index which is different than BarsAgo. you can use the index directly with the GetValueAt method otherwise you would have to use CurrentBar - foundIndex to get a number of BarsAgo from where you are at in processing.

https://ninjatrader.com/support/helpGuides/nt8/getvalueat.htm?zoom_highlightsub=getvalueat