Trying to add input series to indicator after indicator creation

[risingfire]

I am working on a multi-time frame strategy. Because of the way my data structures are created, I need to add the data series to indicator objects that have already been created.

To associate an indicator with another time series I Add()'ed in Initialize(), I know that I could do something like this:

SMA sma = SMA(BarsArray[1],14);

However, what I want to be able to do is this.... First create the indicator object:

SMA sma = SMA(14);

And then later associate the input series with it. Something like this:

sma.BarsArray = BarsArray[1];

That obviously does not work, but illustrates the point. How would I accomplish this?

[NinjaTrader_CalH]

Hello Risingfire,

Thank you for your post.

There is not a way to add the BarsArray to the indicator object dynamically.

Let me know if I can be of further assistance.

[risingfire]

Hello Risingfire,

Thank you for your post.

There is not a way to add the BarsArray to the indicator object dynamically.

Let me know if I can be of further assistance.

To clarify, I don't think it is the BarsArray that needs to be added, but the IDataSeries input stream. BarsArray is of type Bars[] and Bars[] inherits IDataSeries.

In the example I used, the calling convention for an indicator, such as SMA, is:

SMA( Data.IDataSeries input, int period )

So what I want to do is add the input series (i.e., an IDataSeries) to the indicator after it has been created.

Looking at the question that way, Is this possible?

[NinjaTrader_CalH]

Risingfire,

What you will want to do is just declare the object in the variables first

private SMA sma;

You can then set the sma to the SMA() in the OnStartUp() method

protected override void OnStartUp()
{
     sma = SMA(BarsArray[1], 14);
}

Let me know if this helps

[risingfire]

I already have the object created using the short form Indicator( param1, param2, etc.). It's difficult to explain the reasons as to why I cannot call it as you advise in OnStartUp(). It is because of the class structure of my project and other indicators.

However, I dug a little deeper and found that I could do this:

SMA sma = SMA(14);
// (many lines of code later....)
sma.Input = BarsArray[1];

It works and gives me exactly what I need -- the ability to associate an input series after the actual object creation.