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Indicator Development Support for the development of custom indicators using NinjaScript.

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Old 09-14-2017, 07:58 AM   #16
NinjaTrader_AlanS
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Hello Slide588,

Thanks for your reply.

An extra check for this specific case can be addressed in the following way:

//declare this variable outside of Initialize() and OnBarUpdate()
private int x;

//assign the value in Initialize()
protected override void Initialize()
{
x = Time[0].Minute;
}

protected override void OnBarUpdate()
{
if(x == 0)
x = 60;
else
x = Time[0].Minute;

if(DateTime.Now.Minute == (x - 1) && (60 - DateTime.Now.Second) <= 15)
//trigger alert
}

Please let me know if I may be of any further assistance.
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Old 10-01-2017, 01:45 AM   #17
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Hi Alan

So I've coded this and the alerts aren't playing. They do play if I take the time check out. I'm testing the code in replay mode; will it make a difference? Can I send the code through for checking? Also is there a way to see values to debug the code in NT7, set break points etc?

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Old 10-02-2017, 08:21 AM   #18
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Hello Slide588,

Thanks for your reply.

DateTime.Now will pull your PC clock's time rather than the time of the bar when running in replay mode, so you would have to rewrite this script in order for it to behave as expected while connected to Market Replay. You would need to use the Time[] to retrieve the time stamp of the bar.

Additionally, you will need to ensure that your strategy is calculating on each tick, or that your CalculateOnBarClose property is set to false.

You can debug your scripts in this manner with Visual Studio. For more information on how to do this with Visual Studio, please follow the link below:
https://ninjatrader.com/support/help..._debugging.htm

Please let me know if I may be of any further assistance.
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Old 10-04-2017, 05:20 AM   #19
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Thanks for all your help Alan.

Just to confirm, with CalculateOnBarClose = false then Time[0] will give the instant bar time stamp, ie second by second or even milliseconds and with CalculateOnBarClose = true then Time[0] will give the time when the bar will close.

So I could use Time[0] for both real time and replay mode. If the above is correct then what would be the code please for sounding the alert 15 seconds before the close of the bar using Time[0]? Because I don't know when the bar will close with CalculateOnBarClose = false, or do I? Have I missed something?
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Old 10-05-2017, 08:42 AM   #20
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Hello Slide588,

Thanks for you reply.

I think that the best solution here would be to borrow some code from the BarTimer() indicator to implement in your script.

If you go to Tools --> Edit NinjaScript --> Indicator --> double click on the BarTimer indicator to open it, you will see that this indicator declares a DateTime variable in the following manner:

Code:
		
private DateTime Now
		{
			get 
			{ 
				DateTime now = (Bars.MarketData.Connection.Options.Provider == Cbi.Provider.Replay ? Bars.MarketData.Connection.Now : DateTime.Now); 

				if (now.Millisecond > 0)
					now = Cbi.Globals.MinDate.AddSeconds((long) System.Math.Floor(now.Subtract(Cbi.Globals.MinDate).TotalSeconds));

				return now;
The key here is that the variable is assigned the Bars.MarketData.Connection.Now value when connected to Market Replay, which will print the time of the bar while in replay. You can add this property to your script to reliably check against the time remaining on the bar while connected to Market Replay and your real-time data feed.

You are correct in that regardless of the CalculateOnBarClose setting, retrieving the Time[] value will return the closing time of the bar rather than the intra-bar value.

Please let me know if I may be of any further assistance.
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