Add DeltaBars dataseries

[Bradyw]

Is it possible to add a secondary data series using DeltaBars bar type?

[NinjaTrader_ChelseaB]

Hello Bradyw,

Welcome to the NinjaTrader forums!

To add a data series to a script using a custom bar type, the BarsPeriod ID will need to be used in the AddDataSeries() call.

From the help guide:
"2. You can add a custom BarsType which is installed on your system by casting the registered enum value for that BarsPeriodType. For example: AddDataSeries((BarsPeriodType)14, 10);

3. You can specify optional BarsPeriod values (such as Value2) of a custom BarsType in the BarsPeriod object initializer. For example: AddDataSeries(new BarsPeriod() { BarsPeriodType = (BarsPeriodType)14, Value = 10, Value2 = 20 });"
https://ninjatrader.com/support/help...dataseries.htm

Below is a link to helpful script that lists the IDs for each bar type.
https://ninjatraderecosystem.com/use...pe-identifier/

[artson]

Hi,

I have DeltaBars defined as "DeltaBarsType".
I can load it in a normal chart.

In an Indicator, I want to select them, but as they are not predefined, I get an error (not compiling but when selecting the "DeltaBarsType" in the chart:
Error on calling 'OnStateChange' method: Requested value 'DeltaBarsType' was not found.
The rest of the predefined BarTypes give no error.
This is how I use it:

public enum MultiTFPeriodTypesIndic
{
Tick, Volume, Second, Minute, Day, Week, Range, DeltaBarsType
}

What should I write there, in order to get my defined BarTypes correctly selected?

As an alternative, I could do an If ssentence in the State == State.Configure, but I don't know how to "compare" the selected MultiTFPeriodTypesIndic.

I have in Properties:

[NinjaScriptProperty] [Display(Name = "Multi TF Data Series Type 1", Order = 100, GroupName = "Data Series")] public MultiTFPeriodTypesIndic MultiTFType1 { get; set; }

How can I do in State == State.Configur to check it properly?

if(MultiTFType1 == "DeltaBarsType") =>> error

How could I make to be able to select a personal BarType?

Thanks!!

[NinjaTrader_ChelseaB]

Hello artson,

You will need to use the barsType Id and cast as a BarsPeriodType as suggested in post # 2.

[artson]

So, is it not possible to select the DeltaBarsType?

With my:

public enum MultiTFPeriodTypesIndic
{
Tick, Volume, Second, Minute, Day, Week, Range, DeltaBarsType
}

[NinjaScriptProperty] [Display(Name = "Multi TF Data Series Type 1", Order = 100, GroupName = "Data Series")] public MultiTFPeriodTypesIndic MultiTFType1 { get; set; }


else if (State == State.Configure)
{
if(MultiTFPeriod1 > 0)
AddDataSeries(GetBarType(MultiTFType1), MultiTFPeriod1);
}

I can select the BarsType as Volume, Minute or Range i.e. give the Period I want, and I get the DataSeries added with these selected parameters instead of havint them harcoded.
It has worked till now without problems.

But I cannot select the DeltaBarsType.
How can I add the DeltaBarsType to the AddDataSeries?

[artson]

Maybe also another question,

How can I know with an "if" sentence, that I have selected the "DeltaBarsType"?

public enum MultiTFPeriodTypesIndic
{
Tick, Volume, Second, Minute, Day, Week, Range, DeltaBarsType
}

[NinjaScriptProperty] [Display(Name = "Multi TF Data Series Type 1", Order = 100, GroupName = "Data Series")] public MultiTFPeriodTypesIndic MultiTFType1 { get; set; }


if(MultiTFType1 == "DeltaBarsType") =>> error

How should I code the "if" sentence?

[NinjaTrader_ChelseaB]

Hello artson,

Not by, name but yes by the barsId.

if (BarsArray[0].BarsPeriodType == (BarsPeriodType)14) // your barsType id would replace the 14.

[artson]

Thanks, but this is not what I mean,

I mean: I select "DeltaBarsType" in th properties in the chart,
then I will load Data Series as you mention in Post 2:
AddDataSeries(new BarsPeriod() { BarsPeriodType = (BarsPeriodType)14, Value = 10, Value2 = 20 });

If I select another predefined BarsType It works with
AddDataSeries(GetBarType(MultiTFType1), MultiTFPeriod1);


The problem I have is, that I cannot get correctly the if sentence to know when the "DeltaBarsType" has been selected
I don't know how to write this if:

if( ?????? == DeltaBarsType ????) AddDataSeries(new BarsPeriod() { BarsPeriodType = (BarsPeriodType)14, Value = 10, Value2 = 20 });

[NinjaTrader_ChelseaB]

Hello artson,

What I was suggesting in post # 4 and # 7 is how to know when the custom bar type is selected on the chart. Is this not what you are trying to do?
The if I suggested says if the bar type is custom bar type 14. Your custom bar type will have a different ID.

Note, it is not supported to dynamically call AddDataSeries from an if statement logic block.

[artson]

Thanks Chelsea,

"Note, it is not supported to dynamically call AddDataSeries from an if statement logic block."
But it works with the instructions I wrote...

In any case, I change my question: how would you write an if sentence, to know if the selected option is DeltaBarsType in:



public enum MultiTFPeriodTypesIndic
{
Tick, Volume, Second, Minute, Day, Week, Range, DeltaBarsType
}

[NinjaScriptProperty] [Display(Name = "Multi TF Data Series Type 1", Order = 100, GroupName = "Data Series")] public MultiTFPeriodTypesIndic MultiTFType1 { get; set; }

[NinjaTrader_ChelseaB]

Hello artson,

Your enum isn't associated with a bar type.

But if you want to know the value of your enum variable it would be

if (MultiTFPeriodTypesIndic == MultiTFPeriodTypesIndic.DeltaBarsType)

However, you shouldn't have an enum declared with the same name as a variable or any other type, as this would be ambiguous.

If you want to know if the custom bar type is selected on a chart see post # 4 and post # 7.

[artson]

"However, you shouldn't have an enum declared with the same name as a variable or any other type, as this would be ambiguous."
bufffffff, I do really have more than one

I really have:

public enum MultiTFPeriodTypesIndic
{
Tick, Volume, Second, Minute, Day, Week, Range, DeltaBarsType
}

[NinjaScriptProperty] [Display(Name = "Multi TF Data Series Type 1", Order = 100, GroupName = "Data Series")] public MultiTFPeriodTypesIndic MultiTFType1 { get; set; }
[NinjaScriptProperty] [Display(Name = "Multi TF Data Series Type 2", Order = 120, GroupName = "Data Series")] public MultiTFPeriodTypesIndic MultiTFType2 { get; set; }
[NinjaScriptProperty] [Display(Name = "Multi TF Data Series Type 3", Order = 110, GroupName = "Data Series")] public MultiTFPeriodTypesIndic MultiTFType3 { get; set; }

and it works till now....

In this case, how should I write your:
if (MultiTFPeriodTypesIndic == MultiTFPeriodTypesIndic.DeltaBarsType)

Thanks a lot Chelsea!!

[NinjaTrader_ChelseaB]

Hello artson,

Below is how you would check the value of an enum variable.

if (MultiTFType1 == MultiTFPeriodTypesIndic.DeltaBarsType)

[artson]

Perfect!!

This is what I needed!

You have helped me a lot!!

[artson]

Incredible!

The solution works in the indicator I was working with.

As it worked, I copied the same text into another indicator and then, it compiles right, but when selecting DeltaBarsType in the chart it crashes with the error:

Indicator 'aInaRotPiv': Error on calling 'OnStateChange' method: Requested value 'DeltaBarsType' was not found.

I've checked everything and it is the same as in the indicator working....
What could it be?
A kind of bug from NT?