Indicator using multiple instruments/timeframes

[dom993]

Hi there,

I want to write an indicator which requires access to a couple instruments/timeframes.

Can this be done in a class derived from Indicator ?

Thanks in advance
Dominique

[sledge]

Hi there,

I want to write an indicator which requires access to a couple instruments/timeframes.

Can this be done in a class derived from Indicator ?

Thanks in advance
Dominique

Yes

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

[dom993]

Thank you Sledge. Although I have several multi-instrument strategies, I didn't realize the same technique could be used in an Indicator.

Now, to refine the initial question ... when I use an indicator from within a strategy, the strategy decides which instrument/timeframe (BarsArray) is to be used by the indicator as primary timeframe ... is it possible for the strategy to also provide the indicator with the secondary timeframe to be used, instead of the indicator having to find that on its own? (I suppose I can pass the instrument / PeriodType & period value as indicator parameters, but is there a way to pass a BarsArray to be used as secondary timeframe more directly ?)

Thanks in advance
Dominique

[sledge]

Thank you Sledge. Although I have several multi-instrument strategies, I didn't realize the same technique could be used in an Indicator.

Now, to refine the initial question ... when I use an indicator from within a strategy, the strategy decides which instrument/timeframe (BarsArray) is to be used by the indicator as primary timeframe ... is it possible for the strategy to also provide the indicator with the secondary timeframe to be used, instead of the indicator having to find that on its own? (I suppose I can pass the instrument / PeriodType & period value as indicator parameters, but is there a way to pass a BarsArray to be used as secondary timeframe more directly ?)

Thanks in advance
Dominique

If I'm understanding...

Isn't this the same as adding an EMA/SMA of 5/10/30/60 minutes to your strategy?

Or adding 5/10/30/60 minutes and having EMA/SMA compute those, and your strategy can decide which to use?..



Now if you want to start doing infinite possibilities of 1-1,000,000 of EMA, then you will hit performance issues for sure.

[dom993]

Although this is not the exact/final use of it, let's say I am building an indicator to compute a price ratio between 2 instruments (in a way that requires access to both instrument OHLCVT series).

The strategy choose which is instrument #1, and which is instrument #2. Since the strategy already has BarArrays for each instrument, it would be nice to call the indicator providing both BarArrays.