Min Bars Required to Plot a Series

[Zeos6]

Hi,

So I am building my custom indicator code and wondering why it is not plotting. I start experimenting with some basic series when I notice the following: A 2 bar EMA on a chart does not begin to plot until bar 20. This is on CL 5 min futures bar chart. Can anyone please illuminate me why it takes 20 bars before a 2 bar EMA starts to plot? Thank you.

[NinjaTrader_Brett]

Hello,

Thanks for the note.

This has to do with the bars required setting.which is defaulted to 20 in NinjaTrader. As you will get an error if you try to reference a bar back that you dont have data for.

http://www.ninjatrader.com/support/helpGuides/nt7/barsrequired.htm

and also, http://www.ninjatrader.com/support/f...ead.php?t=3229

Let me know if I can be of further assistance.

[Zeos6]

Hi Brett,

How do I change the setting?
Also, will this same setting apply to any custom series I create and plot?

[Zeos6]

I figured out the BarsRequired. It is set in the Initialize(). Thanks Brett. However, how do I set it for your precoded series like EMA? I don't want to create my own EMA code.

[Zeos6]

I figured out the BarsRequired. It is set in the Initialize(). Thanks Brett. However, how do I set it for your precoded series like EMA? I don't want to create my own EMA code.

Any suggestions on how I can set my own BarsRequired value for precoded series like EMA? Or, do I have to build my own versions? Thanks.

[NinjaTrader_RyanM1]

Hi Zeos,

You can save a copy of the system EMA if you want to set a different BarsRequired value. Right click in editor > Save As.

You can also use CurrentBar to only allows calculations after a certain number of bars have passed.

if (CurrentBar > 50) //do your EMA calcs here.

[Zeos6]

Thanks Ryan. It seems a lot of needless effort to duplicate a system EMA just to have it plot earlier than the 20 bar default. I get the calculated values earlier. This was just a cosmetic thing for me. I simply wanted to know if there was a way to reset the default BarsRequired value for system moving avrages, and the answer is no - you have to create your own veersion. Thanks for letting me know.