Access All Existing Data Series on Chart

[BarzTrading]

I have three data series on a chart.

They are the following:

* ES ##-## (Day)
* NQ ##-## (Day)
* RTY ##-## (Day)

The following is true in the indicator OnBarUpdate method:

Closes.Length == 1
BarsArray.Length == 1

I expected all three series would be available much like when one uses AddDataSeries.

How can an indicator access all of the existing data series that are already on the chart?

Thanks,

[BarzTrading]

OK. I found this which gives access to all the data series in the chart.

for (int i = 0; i < ChartControl.BarsArray.Count; i++)
 {
     var bars = ChartControl.BarsArray[i].
}

Can you confirm then that Closes and BarsArray only provide access to the primary chart series in index 0 and then any series added programmatically via AddDataSeries?

Also, in ChartControl.BarsArray, is the first item in that array always the primary series?

In the Closes array we can access values using the barsAgo syntax like this

var val1 = Closes[2][barsAgo];
var val2 = Lows[2][barsAgo];
var val3 = Opens[2][barsAgo];

Is there a way to access values in the chart series using barsAgo syntax?

All I see currently is

var val = ChartControl.BarsArray[2].Bars[barsAgo];

This returns a double which I assume is the close (?).

If I wanted the high from a chart series 10 bars ago, how can I do this?

This would be a nice syntax to have on the Bars object

var val = ChartControl.BarsArray[2].Bars.HIghs[barsAgo];

Thanks.

[NinjaTrader_ChelseaB]

Hello BarzTrading,

To print the number of series:

Print(BarsArray.Count);

Yes, the primary series is always bars Series Index 0.

To print the high of the primary series from 2 bars ago:

Print(Highs[0][2]);

To print the high of the first added series with AddDataSeries() from 2 bars ago:

Print(Highs[1][2]);

Yes, price series such as Close, and High are a collection of doubles.


Below is a public link to the help guide on AddDataSeries().

https://ninjatrader.com/support/helpGuides/nt8/en-us/adddataseries.htm

A public link on BarsArray.

https://ninjatrader.com/support/helpGuides/nt8/en-us/barsarray.htm

A public link on Closes and Highs.

https://ninjatrader.com/support/helpGuides/nt8/en-us/closes.htm

https://ninjatrader.com/support/helpGuides/nt8/en-us/highs.htm

And a public link on CurrentBars.

https://ninjatrader.com/support/helpGuides/nt8/en-us/currentbars.htm

Last, below is a link to a forum post with helpful information about getting started with NinjaScript.

http://ninjatrader.com/support/forum/showthread.php?p=503609#post503609

[BarzTrading]

Thanks for your response, Chelsea, however, my question is specifically about multiple data series on the chart, that were not added using AddDataSeries.

As I mentioned, these appear to be accessible using ChartControl.BarsArray. But only the primary appears in Highs[0], Lows[0]. The other (non primary) chart series do not appear to be accessible this way.

[NinjaTrader_ChelseaB]

Hello BarzTrading,

The data on the chart is Closes[0] or Close when BarsInProgress is 0. This is the primary series. The data on the chart is the primary series.

To print the high of the primary series from 2 bars ago:

Print(Highs[0][2]);

[BarzTrading]

Thanks, but it seems you're not understanding what I'm trying to say.

I'm talking about ChartControls.BarsArray. These charts. They are the ones that are visible on the chart panel.

Now, perhaps the disconnect comes from an idea which I have yet to confirm. The idea is that every indicator is associated with one and only one primary series regardless of how many data series are visible on the chart panel. Is this true? If so, then it explains why only the primary is accessible in Highs[0] and Lows[0].

I am observing that when there are multiple Data Series visible on the chart panel, that only one, the primary, is accessible via Highs[0], Lows[0], etc.

This probably seems like a simple and obvious concept to you because you're so familiar with it.

At this point, I'm just looking for confirmation that you understand what I'm talking about and that I'm understanding things correctly. Is this the case?

Thanks.

[NinjaTrader_ChelseaB]

Hello BarzTrading,

Yes, this is correct. An indicator only uses the series from the chart set as the input series for the script.

Any other series would need to be added to the script using AddDataSeries().

[BarzTrading]

Excellent! Thank you.