Why no Get in IDataSeries as in DataSeries?

[balancenv]

My strategy requires a lot of looping backward and forward and some of the internal structures requiring using 'absolute' bar # as indices, instead of the 'anchored at the currentbar with BarAgo' style.

I've noticed in DataSeries there's this Get method that's the 'normal array reference' style instead of the 'BarAgo' style.

However, the pricing OHLC are of IDataSeries with [BarAgo] style of reference.

I know I can always switch from i to say CurrentBar-i, but this inconsistency makes my head hurt while programming, let along debugging.

It seems to be IDataSeries to support Get is no big deal at all, why is it not?

Any other suggestion to reduce my pain?

[NinjaTrader_JC]

Hello balancenv,

I believe you are referring to the GetBar() method.

While I cannot speak as to the exact reason why it was designed this way, I would imagine it would be for simplicity for coding as the current values "[0]" would be more widely used as the current values can be referenced with ease. Historical values are important as well but it would be much easier references how many bars ago since from the current instead of incrementally counting as the bars go on making it much more difficult to know what bar the current bar is.

Let us know if we can be of further assistance.

[balancenv]

GetBar() won't work since it's based on time, not bar index.
Well, still, please take this as a simple request for future release for IDataSeries to support the equilivant Get() method as in DataSeries.
Thanks.

[NinjaTrader_Joydeep]

Hello balancenv,
Unfortunately there are not GetBar function for a data series.

You may look into the MRO and LRO functions as an alternative. Please refer to our help guide to know more about it.

http://www.ninjatrader.com/support/helpGuides/nt7/index.html?most_recent_occurence_mro.htm

http://www.ninjatrader.com/support/helpGuides/nt7/index.html?least_recent_occurence_lro.htm

[balancenv]

Joydeep,
you mis-understood my point.
I want a direct index access to IDataSeries's element, similar to DataSeries.Get() method.

[NinjaTrader_Joydeep]

Hello balancenv,
Thanks for the clarification.

You can try using the below unsupported code to do it.

double cls  = Bars.GetClose(index);

[balancenv]

Hello balancenv,
Thanks for the clarification.

You can try using the below unsupported code to do it.

double cls  = Bars.GetClose(index);

Can we always assume

bars.GetClose(idx) is the same as Close[CurrentBar-idx]

[NinjaTrader_Joydeep]

Hello balancenv,
Yes, they will return the same values.

[xTrader1]

Can we always assume

bars.GetClose(idx) is the same as Close[CurrentBar-idx]

A mistake. If you need to get the last bar this way , it must be

bars.GetClose(CurrentBar)

not GetClose(0) . Checked in NT7 7.0.1000.25