Multiple Data Series and "Index was outside the bounds of the array." error

[drmartell]

I am using an indicator on a 1020 tick ES chart and wanting incorporate data from a 4080 tick chart.

I have this in Initialize:
Add(PeriodType.Tick, 4080);

I have this in OnBarUpdate:
if (CurrentBar < 120) return;

This seems to be causing my error as it is the only place I refer to the additional series:

Plot5.Set(0);
if (Math.Sign(EMA(Closes[1],10)[0] - EMA(Closes[1],80)[0]) > 0) PlotColors[5][0] = Color.Green;
else PlotColors[5][0] = Color.Red;

There seem to be more than enough bars available for calculations, what am I missing?

[NinjaTrader_RyanM1]

Hello drmartell,

This likely has to do with accessing bars for the secondary series when they are unavailable from the first. There will be a 1000tick bar before a 4000 tick bar. To resolve you use a similar statement but with CurrentBars - the exact number here depends on how your 1000 tick and 4000 tick bars relate together.

if (CurrentBars[1] < 120) return;

[drmartell]

Thanks Ryan,

I am not quite following yet.

I tried this instead:
if (CurrentBars[0] <= BarsRequired || CurrentBars[1] <= BarsRequired) return;

That gave me:
Error on calling 'OnBarUpdate' method for indicator 'test' on bar 87: Index was outside the bounds of the array.

Then I changed my 'Days to load' from 30 to 90 and the error changed to:
Error on calling 'OnBarUpdate' method for indicator 'test' on bar 36: Index was outside the bounds of the array.

So I am not clear on the part about "how your 1000 tick and 4000 tick bars relate together". How do I determine and account for that?

[NinjaTrader_RyanM1]

You will need to increase the bars required for the secondary series. You are calculating your EMA based on 80 bars so will need at least that number for your bars required.

if (CurrentBars[0] <= BarsRequired || CurrentBars[1] < 80)

[drmartell]

OK I did that, now I get this:
Error on calling 'OnBarUpdate' method for indicator 'test' on bar 274: Index was outside the bounds of the array.

[NinjaTrader_Bertrand]

drmartell, can you please give this check below a try for your script?

if (CurrentBars[0] < 0 || CurrentBars[1] < 0) return;

If it does still give you an error, can you please attach it here so we could give it a run on our end?

Thanks,

[drmartell]

OK here it is.

Thank you for looking at it.

[NinjaTrader_RyanM1]

One issue with your code is that you reference 6 plots but only have 5 added in the Initialize() method. Need to add an additional Plot5.

Add(new Plot(new Pen(Color.FromKnownColor(KnownColor.Orange), 4), PlotStyle.Block, "Plot5"));

[drmartell]

Hilarious! Thanks Ryan, I wish they were all that easy.

Too bad it doesn't throw a more specific error in this case.

It's working now anyhow

[NinjaTrader_RyanM1]

Glad that sorted out the issue. Thanks for the follow - up, drmartell.