EMA RAtio

[rana.irfan]

Hi,

I am using two data series and calculate EMA on them. when I am calculating second data series it give me exception (index out of bound)
ema2 = EMA(ChartControl.BarsArray[1],_ema2Length)[0];

Can some one tell me about this issue.

IRFAN

[NinjaTrader_Bertrand]

IRFAN, in this MultiSeries study do you run a CurrentBars check at your OnBarUpdate() start before attempting to process anything?

http://www.ninjatrader.com/support/helpGuides/nt7/currentbars.htm?zoom_highlightsub=CurrentBars

[rana.irfan]

Thanks
but it also give exception on that line which u suggest
if (CurrentBars[0] < BarsRequired || CurrentBars[1] < BarsRequired)
at currentbars[1] index out of bound exception

[NinjaTrader_Bertrand]

But would you have added the needed second series in in your Initialize(), correct?

http://www.ninjatrader.com/support/helpGuides/nt7/add3.htm?zoom_highlightsub=Add

[rana.irfan]

I am adding these two data series from chart not in initialize(). Is this is correct way?

[NinjaTrader_Bertrand]

Unfortunately not, you would need to Add() via Initialize() as documented to be able to work with it programmatically.

[rana.irfan]

Thanks I will try.

[rana.irfan]

Hi,
can U plz tell me in what way I can get the period type of first instrument and its value

[NinjaTrader_Bertrand]

You can check it with BarsPeriod, however this would not be possible / supported in the Intialize() for dynamic adding - http://www.ninjatrader.com/support/h...sub=BarsPeriod