Hybrid Custom BarType

July 23rd, 2010, 06:39 AM

Yes I understand that renko is a "different animal". I'm starting my quest using volume, time, and range. We'll see how that goes before I attempt to do anything with the "different animal". This may turn out to be an academic exercise but it sure looks awesome in my head along with all those other wonderful ideas just dying to get out.

Thanks again,

Mike

July 29th, 2010, 02:47 PM

aslan and RJay,

I've been working with the MinuteBarType and ran across something right at the outset that I'm not sure how to handle. I copied the code for the Minute Bar type into an indicator so I could replicate the MinuteBarType as MikesMinuteBarType. I changed all references to MinuteBarType to MikesMinuteBarType and changed the SortOrder.

I compiled and restarted NT6.5. Loaded a chart with MikesMinuteBarType and it looks perfect on historical data but live data doesn't build a bar. It displays every individual tick. I don't understand this as my code is copied directly from NT's with only those changes I mentioned.

Any ideas why this is happening.

Thanks for your help...

Mike

July 29th, 2010, 06:37 PM

It would help if you can you post your cs file. Thanks.

July 30th, 2010, 07:01 AM

here you go.

Thanks for looking at this.

Mike

July 30th, 2010, 09:16 AM

JoeBlow

Loaded a chart with MikesMinuteBarType and it looks perfect on historical data but live data doesn't build a bar. It displays every individual tick.

Any ideas why this is happening.

You are dealing with some kind of Ninja bug. For some reason, NT is calling Add() with a time == current bar time (which is in the future for min bars, as the timestamp is the end of the bar) for each tick.

I went thru the same exercise you did, and copied the Ninja code as is, and only changed the sortid and period type, and got the same behavior. I added some debug statements to see the incoming timestamps. As each tick is coming in, NT is incrementing the timestamp by 1 min, causing a new bar to be generated. If you really want minute based bars, you will have to talk with NT support.

As you move forward, most bar types are generated from ticks, not minute bars. You change that in the BuiltFrom() method.

P.S. You should also change the value of the DisplayName() routine to return a different string, as yours is returning "Custom8". This routine sets the value shown in the intervals menu items.

P.S.S. Here is a quick and dirty routine to add a Debug statement:

Code

private void Debug(string msg) 
{
	using (System.IO.StreamWriter sw = System.IO.File.AppendText("C:\\debug.txt")) 
	{
		sw.WriteLine(msg);
	}
}

The using block will close the file for you. You can then do something like the following to see the timestamp issues:

Code

if (isRealtime)
	Debug(bars.Count+" time="+time+" lbTime="+lastBar.Time);

July 30th, 2010, 09:25 AM

Thanks for you effort and your much better way to debug than what I've been doing.

I wish you had seen something stupid that I'd done but guess not. I guess this will have to sit because nt won't support custom bartypes.

Thanks again,
Mike

July 30th, 2010, 09:49 AM

Just for grins, the same exercise works fine in NT7.

July 30th, 2010, 10:05 AM

That's funny. I'll work in NT7 on this little project. Just want to prove a concept anyway. I'll let you know how it turns out.

September 17th, 2013, 09:14 AM

This is an old thread, but here is how I use Visual Studio to debug a custom BarsType (in addition to writing debyg output to a file):

1. Compile an indicator in NT, in Debug mode (this also compiles the BarsType).
2. Exit and restart NT (this loads the new BarsType into memory).
3. Compile an indicator in NT, in Debug mode (yes, again. Seems necessary for NT to "know" we're really debugging).
4. In Visual Studio, do Tools Attach to NinjaTrader.
5. In NT, apply your custom indicator. Now your VS breakpoints will be hit.

Hybrid Custom BarType

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Hybrid Custom BarType