"... value that is invalid since it is out of range...etc."

[imalil]

I've been writing a multi time frame script, I just got it working, but it only works on a day chart. Minute and tick give me the error: "... Error on calling 'OBU' method on bar 372: you are accessing an index with a value that is invalid since it is out of range...etc." My state.configure looks like:

else if (State == State.Configure)
{
max = MAX(High, 3);
min = MIN(Low, 3);


if (BarsPeriod.BarsPeriodType == BarsPeriodType.Tick)
{
tickValue = BarsPeriod.Value;
AddDataSeries(BarsPeriodType.Tick, (tickValue * 3));
AddDataSeries(BarsPeriodType.Tick, (tickValue * 9));
}
else if (BarsPeriod.BarsPeriodType == BarsPeriodType.Minute)
{
minuteValue = BarsPeriod.Value;
AddDataSeries(BarsPeriodType.Minute, (minuteValue * 3));
AddDataSeries(BarsPeriodType.Minute, (minuteValue * 9));
}
else if (BarsPeriod.BarsPeriodType == BarsPeriodType.Day)
{
dayValue = BarsPeriod.Value;
AddDataSeries(BarsPeriodType.Day, (dayValue * 3));
AddDataSeries(BarsPeriodType.Day, (dayValue * 9));
}
else if (BarsPeriod.BarsPeriodType == BarsPeriodType.Week)
{
weekValue = BarsPeriod.Value;
AddDataSeries(BarsPeriodType.Week, (weekValue * 3));
AddDataSeries(BarsPeriodType.Week, (weekValue * 9));
}
else if (BarsPeriod.BarsPeriodType == BarsPeriodType.Month)
{
monthValue = BarsPeriod.Value;
AddDataSeries(BarsPeriodType.Month, (monthValue * 3));
AddDataSeries(BarsPeriodType.Month, (monthValue * 9));
}

}

At the start of OBU I use

if (CurrentBars[0] <= BarsRequiredToPlot || CurrentBars[1] <= BarsRequiredToPlot || CurrentBars[2] <= BarsRequiredToPlot)
return;

I am not running any data feeds. The code contains a few while loops. Day charts work fine. I have not checked week and month since I rarely use those.
Any advice would be appreciated.

Thank you.

[NinjaTrader_BrandonH]

Hello imalil,

Thanks for your post.

" Error on calling 'OBU' method on bar 372: you are accessing an index with a value that is invalid since it is out of range"

This error will be displayed if you try to use a BarsAgo or index when it is not valid. A more simple example using one series would be on bar 5 you check for 6 BarsAgo. There are not yet 6 bars so the CurrentBar minus 6 would be a negative number or a non-existent bar.

Please note that dynamically adding data series as seen in the code you shared is not recommended/supported as stated in the AddDataSeries() help guide page. From the help guide page: "Arguments supplied to AddDataSeries() should be hardcoded and NOT dependent on run-time variables which cannot be reliably obtained during State.Configure (e.g., Instrument, Bars, or user input). Attempting to add a data series dynamically is NOT guaranteed and therefore should be avoided."

AddDataSeries: https://ninjatrader.com/support/help...=adddataseries

I recommend debugging your code and finding the exact index that is causing the error and then checking the size of that collection to understand the cause of the error. See the forum thread below for more information about this error.
https://ninjatrader.com/support/foru...13#post1048513

You may use prints to find the exact line of code triggering the error. See the forum thread below demonstrating how to use prints to understand behavior and debug a script.
https://ninjatrader.com/support/foru...121#post791121

Note that it is important to print the BarsInProgress value and CurrentBars[BarsInProgress] along with the time of the bar.

Please let me know if I may assist further.

[imalil]

Hello, thanks for replying. I think I know the problem I just have to figure out how to fix it. The question I have is this: If I don't dynamically add data series, which means don't use

AddDataSeries(BarsPeriodType.Minute, (minuteValue * 3));

, the problem arises where I can't use one indicator on different minute charts. For example, how can I use one indicator on a 1, 3, 9 minute chart and the same indicator on a 5, 15, 45 minute chart if I hard code the time frame? Is this an impossible thing I'm trying to do?

Thank you.

[NinjaTrader_BrandonH]

Hello imalil,

Thanks for your note.

You would need to add an additional data series to your script by calling AddDataSeries() for each data series you want to add. In the example you shared, you would need to call AddDataSeries() a total of 6 times to add a 1-minute, 3-minute, 5-minute, 9-minute, 15-minute, and 45-minute secondary series to the script.

AddDataSeries((BarsPeriodType.Minute, 1);
AddDataSeries((BarsPeriodType.Minute, 3);
AddDataSeries((BarsPeriodType.Minute, 5);
//...and so on

Then, you may instantiate an indicator on each secondary series in your script, access indicator values, or assign that indicator value to a plot if you wish. I have attached a simple example script of what this may look like.

Note that indicators will only calculate values based on the added series, the indicator can only plot on the primary data series the script is running on.

Please review the help guide pages linked below.

AddDataSeries(): https://ninjatrader.com/support/help...dataseries.htm
BarsArray: https://ninjatrader.com/support/help.../barsarray.htm
CurrentBars: https://ninjatrader.com/support/help...urrentbars.htm
Working with Multi-Timeframe/Multi-Instrument NinjaScripts: https://ninjatrader.com/support/help...nstruments.htm

Let me know if I may assist further