Setting Calculate gives Compiler Error

[jeronymite]

According to the NT8 Help documentation, one can set Calculate as follows:

protected override void OnStateChange()
{
    if (State == State.SetDefaults)
    {
        // Calculate on the close of each bar
        Calculate = Calculate.OnBarClose;
    }
}

When I do that in an AddOn, I get a compiler error:



Am I missing something obvious?

Thanks.

[NinjaTrader_Jim]

Hello jeronymite,

Thanks for your question.

Calculate will be available when we are working with a NinjaScript that utilizes OnBarUpdate. This is not available in AddOn where we would need to use BarsRequests to request and process bar data.

BarsRequests do not offer a Calculate mode, but will calculate following OnEachTick processing. We can identify when a bar has closed if the index for the updating bar changes in the BarsRequest update event.

private int last = -1;

private void BROnBarUpdate(object sender, NinjaTrader.Data.BarsUpdateEventArgs e)
{    
    /* Depending on the BarsPeriod type of your barsRequest you can have situations where more than one bar is
       updated by a single tick. Be sure to process the full range of updated bars to ensure you did not miss a bar. */

    ClearOutputWindow();

    // Output bar information on each tick 
    for (int i = e.MinIndex; i <= e.MaxIndex; i++)
    {
        if (i != last)
        {
            NinjaTrader.Code.Output.Process("NewBar", PrintTo.OutputTab1);
            last = i;
        }
    }
}

BarsRequest - https://ninjatrader.com/support/help...arsrequest.htm

We look forward to being of further assistance.

[jeronymite]

Thanks, Jim.

I'm already using BarsRequest, and it's good to know the Calculate mode.

I was surprised that trying to use Calculate in an AddOn caused a compile-time error. I would have hoped for a more graceful means of "unavailability".

Also, may I recommend that the documentation be updated to state that Calculate is not available in AddOns, and to refer to BarsRequest and its OnEachTick Calculate mode, please?

Thanks again.

[NinjaTrader_Jim]

Hello jeronymite,

Thanks for your feedback.

I have submitted your request to the Product Management group for consideration.