Indicator that calculate in different chartime

[NinjaTrader_ChelseaB]

Hello ninjo,

[Browsable(false)]
[XmlIgnore]
public Series<double> myPlotLine
{
get { return Values[4]; }
}

There is no Values[4] in your script.

You have not called AddPlot() 5 times and added 5 plots for there to be a [4] index with Values.

There is only one call to AddPlot() and this would be Values[0].



Also, the script has a data series added.

You will need to make sure that CurrentBars[1] is greater than 1 and ensure the secondary series has a bar

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

[ninjo]

Yes, I forget change it. I had 5 plots in my original indicator.

I added:

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

Its strange... works with

AddDataSeries(Data.BarsPeriodType.Minute, 60);

but not with others times...


I attached the new .cs

Thank you !

[NinjaTrader_ChelseaB]

Hello ninjo,

Are you still experiencing an error with this new file that we can assist with?

[ninjo]

Yes, the error returned is:

"A hosted indicator tried to load additional data. All data must first be loaded by the hosting NinjaScript in its configure state"

but, this problem dont happend with SMA, or EMA indicator.

Have you any indicator .cs with and example related to my purpose? I suppose it would be quicker to get, and less boring for you : )

Thank you

[NinjaTrader_ChelseaB]

Hello ninjo,

This error means you are calling a hosted indicator that is using AddDataSeries() but you have not added the same series to the host indicator.

From the help guide:

"To maximize data loading performance, any NinjaScript object (indicator or strategy as host) which references a multi-series indicator which calls AddDataSeries must include it's own calls to AddDataSeries(). For example, if the code above was included in an indicator, and that indicator was referenced in a NinjaScript strategy, then the hosting strategy will need to include the same calls to AddDataSeries(). When the strategy adds the additional Bars objects, the calls to AddDataSeries() within the indicator will be ignored. If the Bars objects are not added by the strategy in such cases, and error will be thrown in the Log tab of the Control Center that would read - "A hosted indicator tried to load additional data. All data must first be loaded by the hosting NinjaScript in its configure state.""

https://ninjatrader.com/support/helpGuides/nt8/en-us/index.html?multi-time_frame__instruments.htm#AddingAdditionalBarsObjectToninjascript

You will need to also call the same AddDataSeries() call in the host script.

[ninjo]

Ok Chelsea B, i am going to try it as you suggest.

Thank you for the support!

[Parmenides48]

I can't find why there is "Error on calling OnBarUpdate method on bar 200: Object reference not set to an instance of an object"

[NinjaTrader_BrandonH]

Hello Parmenides48,

Thanks for your note.

"Object reference not set to an instance of an object"

The error message means that something in the script is returning null at the time you are accessing it. I see in the script you shared that you have not added debugging prints in your script to determine what the exact line of causing the error is.

Debugging steps would need to be taken to determine what exactly is returning null in your script.

Below is a link to a forum post that demonstrates using debugging prints to understand the behavior of a script.
https://ninjatrader.com/support/foru...121#post791121

Let us know if we may assist further.

[QuantKey_Bruce]

This is a duplicate of https://forum.ninjatrader.com/forum/...ng-onbarupdate and it was already resolved there.