Multi-Series Indicators and Duplicate AddDataSeries

[ntbone]

If I am looking at a one minute chart and my indicator has code to AddDataSeries(BarsPeriodType.Minute, 1) I will have two bar series in the chart that are covering the exact same time period. Is the data duplicated?

[ntbone]

I checked for BarsArray[] equality and sure enough BarsArray[0] == BarsArray[i] if the data series for BarsArray[i] is the same time period as the chart.

[NinjaTrader_ChelseaB]

Hello ntbone,

It is expected that there will be a BarsInProgress and BarsArray index for the primary series and for each series added with AddDataSeries.

[ntbone]

That's not what I was querying, nor what my conculsion was.

If I have a 1 minute chart, and I have a call to AddDataSeries(BarsPeriodType.Minute, 1); the BarsArray[0] will be the exact same object as BarsArray[i] for the index which correlates to AddDataSeries call. It doesn't appear to generate a separate object but puts the reference to the same object in both slots of the BarsArray[].


I would also expect, if for some odd reason, I called AddDataSeries(BarsPeriodType.Minute, 1) twice in a row, that the object in the BarsArray[] for both series would be the same object.

[NinjaTrader_ChelseaB]

Hello ntbone,

Yes, NinjaTrader caches the series objects and does not technically duplicate them. However, the indexes remain, and OnBarUpdate will still run for both of the duplicated series.

[ntbone]

Thanks. That is consistent with the behavior I have observed.