question on AddDataSeries() with barsToLoad argument

[leontancfa]

Firstly, my use case is:
On a 1 minute chart with only 3 days data loaded,
I would like to create an indicator based on daily bars. but I found that if I add data series with

AddDataSeries(Data.BarsPeriodType.Minute, 390;

I loaded the indicator and found that the daily bars indicator doesn't work because too few days data is loaded.

So I checked overload variances, and found bars to load overload

AddDataSeries(string instrumentName, BarsPeriod barsPeriod, int barsToLoad, string tradingHoursName, bool? isResetOnNewTradingDay)

But then I found this overload does not have period argument that I can define "390" minutes. so I'm confused...

Could you advise what is use case of this overload, and how can I achieve my use case?

[NinjaTrader_ChelseaB]

Hello leontancfa,

When using AddDataSeries(), its best to use 'Load data based on' to 'Days'. This will automatically load the same amount of days of days for the secondary series as the primary series. When using 'Load data based on' set to 'Bars', this will load the same number of bars, which will be a smaller amount of data for the added series. Loading 3 bars with day bars as the primary would load 3 1-minute bars for the secondary.

With the overloads, the BarsPeriod is where you can set the bar type and interval.

AddDataSeries(string instrumentName, BarsPeriod barsPeriod, int barsToLoad, string tradingHoursName, bool? isResetOnNewTradingDay)

https://ninjatrader.com/support/helpGuides/nt8/adddataseries.htm

AddDataSeries("AAPL", new BarsPeriod { BarsPeriodType = BarsPeriodType.Minute, Value = 1440 }, "US Equities RTH");

https://ninjatrader.com/support/helpGuides/nt8/barsperiod.htm

[leontancfa]

Thanks.
What I wanted to do is to have primary series as 1 minute bar with only 3 days, because I don't want the chart be with too many bars;
but my indicator based on daily bar with at least 90 days of data.

It seems current overloads can't achieve this?

[NinjaTrader_ChelseaB]

Hello leontancfa,

The current overloads can achieve this.

AddDataSeries(null, new BarsPeriod() { BarsPeriodType = BarsPeriodType.Minute, Value = 1 }, 4320, null, true);

Where 4320 bars is 1440 minute bars in a day * 3 days.

[RT001]

Thanks for the example Chelsea!