Referencing Other Inicators

[jstarai]

Hi,

Trying to build Kaufman's AMA filter, buy and sell zones as indicators. 3 days of frustration has driven me into the forum.

I've done a fair bit of PowerShell scripting at work, but nothing like this. Start with a simple question.

Under the Indicator, I have:
private KAMA Kama;

In State.Configure,
Kama = KAMA(Fast, Period, Slow);

In OnBarUpdate(), if I do,
double Kama0 = Kama[0];
Value[0] = Kama0;

I get values on the chart

But if I do,
double Kama0 = Kama[1];
Value[0] = Kama0

I get nothing.

Does Kama need to be declared as a series? Pls explain.

Thanks in advance for the assist. I have a short stint between jobs and I need to shorten the learning curve as much as possible while I have this opportunity!

[NinjaTrader_ChelseaB]

Hi jstarai,

Are you getting any error messages in the Log tab of the Control Center?

Are you checking there is at least 1 historical bar before trying to call 1 bar ago?

Without a check for there being a bar 1 bar ago, double Kama0 = Kama[1]; could cause an index error if this is called on bar 0.

Is this a script you are making in NinjaTrader 7 or NinjaTrader 8?

(Below is a link to the NinjaTrader 8 section of the forums)
http://ninjatrader.com/support/forum...splay.php?f=59

[jstarai]

Thanks, that did the trick. It's NT8, by the way.

But more importantly, now I know where to look for errors.

[koganam]

Thanks, that did the trick. It's NT8, by the way.

But more importantly, now I know where to look for errors.

You look in the log.