Bars ago

[Day Trading Fool]

Hi, new to Ninja Trader and trying to bring some indicators in.

I am having problem with:

double xx = EMA(Close,10)[1];

Nothing appears on the chart unless I change the 1 to a 0. This seems to be a common theme on the forum.

I have read this:

http://www.ninjatrader-support2.com/vb/showthread.php?t=3170

The log is reflecting the 'Error on calling the 'OnBarUpdate' method for indicator 'xx' on bar 0: Index was out of range...'

This doesn't make sense. I logged onto my Ameritrade account for historical and the chart is reflecting 3 days worth of 10 minute bars == 117 bars? I should only need 11 bars? What gives?

Pulling my hair out on this one. Been at it all day. Silly me.

EDIT:

Yikes... I figured it out. For the sake of posterity, bars are left to right, 0 to whatever. I needed to set the condition to check for bars equal to or greater than period plus whatever. Heh.

[NinjaTrader_RyanM1]

Hello,

Yes, that's exactly what's happening here. No "prior bar" exists for the first bar in the series so you have to tell the code explicitly to return. Thanks for sharing the solution to your problem.

[dowhk]

Hello,

Yes, that's exactly what's happening here. No "prior bar" exists for the first bar in the series so you have to tell the code explicitly to return. Thanks for sharing the solution to your problem.

Try this:

if (CurrentBar > 0)
{
your code here
}