Invalid Index error

[guillembm]

Hello,

I'm getting this error on my strategy:

"You are accessing an index with a value that is invalid since its out of range. I.E. accessing a series [barsAgo] with a value of 5 when there are only 4 bars on the chart."

To avoid it I wrote this code on the beginning of the OnBarUpdate():

if (CurrentBar < 10)
return;

But the error remains. It's a multiinstrument strategy. Perhaps I should use CurrentBars[0] ?


thanks

[NinjaTrader_Bertrand]

Correct guillembm, you would need to add a check for all bars objects in your script like - http://www.ninjatrader.com/support/h...ub=CurrentBars

[guillembm]

Unfortunately I still receive the same message. I changed the code to:

if ((CurrentBars[0] < 10 || CurrentBars[1] < 10 || CurrentBars[2] < 10 || CurrentBars[3] < 10) && !Historical)
{
if (NoBarsWarned == false)
{
SendMail("[email protected]", "[email protected]", "NO BARS", "NO BARS");
NoBarsWarned = true;

}

return;
}

And I receive the same message error. The funny thing is that I only receive this error around 3 in the morning (GMT + 1). I suppose it happens during a restart task or similar in IB. But I think this code should still work.

thanks

[NinjaTrader_Bertrand]

guillembm, same outcome if you don't check for a hardcoded integer value, but the BarsRequired set?

[koganam]

Unfortunately I still receive the same message. I changed the code to:

if ((CurrentBars[0] < 10 || CurrentBars[1] < 10 || CurrentBars[2] < 10 || CurrentBars[3] < 10) && !Historical)
{
if (NoBarsWarned == false)
{
SendMail("[email protected]", "[email protected]", "NO BARS", "NO BARS");
NoBarsWarned = true;

}

return;
}

And I receive the same message error. The funny thing is that I only receive this error around 3 in the morning (GMT + 1). I suppose it happens during a restart task or similar in IB. But I think this code should still work.

thanks

You need to remove the highlighted condition and let is stand on its own: CurrentBars[x] are always historical, so your net condition will always be false, which is why the block is never entered.

[guillembm]

Sorry, I don't understand your answer.

Min. bars required is set to 20 on the strategy settings. Should I write it on Initialize()?

On the help guide it says " In a multi-series strategy this restriction applies only for the primary Bars object"

What if a secondary instrument is not receiving the appropriate number of bars?