access last bar data in OnBarUpdate() method

[randomcz]

Hi,

I met a question of accessing last bar data in developing an indicator. It seemed that in the OnBarUpdate() for Indicators, the method cannot access last bar data. Is that true?

The code I wrote is :

ror.Set(Close[0]/Close[1]-1); //ror is a DataSeries object
double sd=StdDev(ror, 10)[0];
Plot0.Set(sd);

But it works if I wrote this way:

ror.Set(Close[0]/lastclose-1);
double sd=StdDev(ror, 10)[0];
Plot0.Set(sd);
lastclose=Close[0];

Can you explain it why is that?

Thanks,
Michael

[NinjaTrader_Ben]

Hello,

Try putting if(CurrentBar < 10) return; after OnBarUpdate(). This link may help:

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