One Indicator Drive Multiple Panels?

[Serac]

I have several custom indicators that both reference a memory- and CPU-intensive algorithm (which itself is an indicator). Instead of calling this memory-intensive indicator in each of my indicators, I would like to merge my two indicators into a single algorithm so that I only need to call the memory-intensive indicator once instead of twice per cycle. Does this make sense for far?

The problem is that the plots of my two indicators are very different - they need to be in two different frames.

My questions are:

1. Is it possible to make one indicator plot on two different frames?

2. Is it possible for the same indicator to both plot on the price frame (Overlay = true) and on a different frame (Overlay = false).

3. If either #1 or #2 is false, do you have suggestions on how to increase the efficiency of my NinjaScripts to elliminate unneccessary referenced to memory intensive code?

[NinjaTrader_Matthew]

Hello Serac,

I understand that you are trying to combine two indicators into a single algorithm.

1) No, each indicator will be limited to plotting on 1 additional panel. You cannot plot two separate panels from one instances of your indicator.

2) You would not be able to plot or draw on both the price panel and the indicator panel.

It would require two indicators to accomplish this. Without knowing more about your indicators, the only advice I can offer you is from our Performance Tips:

http://www.ninjatrader.com/support/helpGuides/nt7/index.html?performance_tips2.htm

[Serac]

Hmmm. That is too bad. Please put that down on the huge list of desired additions to a NT update.

Here is the deal: The two indicators, say, IndyA and IndyB reference a third indicator that computes the frequency of the input series from a bank of band pass filters. Let's call this third frequency estimating indicator IndyPeriod.

IndyPeriod is computationally intensive. I have optimized it as much as I can. Both IndyA and IndyB reference IndyPeriod, such as: double period = IndyPeriod(Input)[0]. Then both indicators use the value of period in their calculations. My strategy calls both IndyA and IndyB. I cannot simply call IndyPeriod in my strategy and pass the value to IndyA and IndyB in the strategy because I need current and previous values of IndyA and IndyB in the strategy.

As I understand, if both IndyA and IndyB call IndyPeriod, all the computations in IndyPeriod will get done twice, and the second time will be redundant to the first.

Is there any way to define IndyPeriod as some type of global, and simply have IndyA and IndyB reference this global? Does this all make sense?

[NinjaTrader_Matthew]

Hello Serca,

As long as you are calling the same indicator with the same exact parameters, the calculation should be internally cached.

However, there are also ways of passing this data outside of the normal methods. Hopefully the following thread will be of some use:

http://www.ninjatrader.com/support/forum/showthread.php?t=10710&highlight=global+variable+dll

[Serac]

Matthew,

Thanks! This is what I needed to know.