Sharing data between two indicators

April 23rd, 2012, 03:50 AM

I'm looking for method to share (communicate) data between two indicators.
Both indicators need to be attached to the same chart.
Call one indicator from within another one is not an option, as it limits plot options in the called one.
At first stage I want to keep it simple, so one indicator need only to send/outputs data and the second one only to read it.
DataSeries is the preferred data type I would like to use, so it can be used for both,historical and real-time.

Any suggestions?

April 23rd, 2012, 04:06 AM

Erez

I'm looking for method to share (communicate) data between two indicators.
Both indicators need to be attached to the same chart.
Call one indicator from within another one is not an option, as it limits plot options in the called one.
At first stage I want to keep it simple, so one indicator need only to send/outputs data and the second one only to read it.
DataSeries is the preferred data type I would like to use, so it can be used for both,historical and real-time.

Any suggestions?

using the same "base class" and comunicate / datashare over static public class variable of this base class

myStorageIndiClass : Indicator
static valuelist = new list<double>

myWorkTool1 : myStorageIndiClass
valuelist.Add(Close[0])

myWorkTool2 : myStorageIndiClass
Close[0]=Mean(valuelist)

April 23rd, 2012, 04:48 AM

TimeTrade

using the same "base class" and comunicate / datashare over static public class variable of this base class

myStorageIndiClass : Indicator
static valuelist = new list<double>

myWorkTool1 : myStorageIndiClass
valuelist.Add(Close[0])

myWorkTool2 : myStorageIndiClass
Close[0]=Mean(valuelist)

Thanks @TimeTrade, can you give more details? I'm not sure I completely understand your concept.

This is how the code shall looks from sender side?
How it should look from receiver side?

Code

 
namespace NinjaTrader.Indicator
{
    public class myStorageIndiClass : Indicator
    {
  public static valuelist = new list<double>;
 
        protected override void Initialize()
        {
        }
        protected override void OnBarUpdate()
        {
          valuelist.Add(Close[0]);
        }
 }
}

April 23rd, 2012, 05:00 AM

Erez

Thanks @TimeTrade, can you give more details? I'm not sure I completely understand your concept.

This is how the code shall looks from sender side?
How it should look from receiver side?

Code

 
namespace NinjaTrader.Indicator
{
    public class myStorageIndiClass : Indicator
    {
  public static valuelist = new list<double>;
 
        protected override void Initialize()
        {
        }
        protected override void OnBarUpdate()
        {
          valuelist.Add(Close[0]);
        }
 }
}

Code

 
file 1:
namespace NinjaTrader.Indicator
{
    public class myStorageIndiClass : Indicator
    {
        public static valuelist = new list<double>;
    }
}

file 2:
namespace NinjaTrader.Indicator
{
    public class myWriteIndi : myStorageIndiClass
    {
        protected override void OnBarUpdate()
        {
          valuelist.Add(Close[0]);
        }
}

file 3:
namespace NinjaTrader.Indicator
{
    public class myReadIndi : myStorageIndiClass
    {
        protected override void OnBarUpdate()
        {
         // use try or count check to prevent problems with empty lists !!!
          Close[0]=valuelist[0];
        }
}

April 23rd, 2012, 05:14 AM

Thanks, I'll test it.

I guess that I can use more than one instance of this in the same chart simultaneously, because the classes are not static.

TimeTrade

Code

 
file 1:
namespace NinjaTrader.Indicator
{
    public class myStorageIndiClass : Indicator
    {
        public static valuelist = new list<double>;
    }
}
 
file 2:
namespace NinjaTrader.Indicator
{
    public class myWriteIndi : myStorageIndiClass
    {
        protected override void OnBarUpdate()
        {
          valuelist.Add(Close[0]);
        }
}
 
file 3:
namespace NinjaTrader.Indicator
{
    public class myReadIndi : myStorageIndiClass
    {
        protected override void OnBarUpdate()
        {
         // use try or count check to prevent problems with empty lists !!!
          Close[0]=valuelist[0];
        }
}

April 23rd, 2012, 05:46 AM

Erez

Thanks, I'll test it.

I guess that I can use more than one instance of this in the same chart simultaneously, because the classes are not static.

You can all do, if you have this self programmed... for more instances you cad add a key(=instance) based dictionary for select the right storeage container... or any other way (example the "register" concept with a unique name on Init and the storage shows the exist of this, if yes return the right container, if no create a new container and return the new value,...)
The only problem: you must understand the logic and know the "C# way" for realize this

May 9th, 2014, 07:08 AM

Hi TimeTrade

I get the following error trying to compile file1

Invalid token '=' in class, struct, or interface member declaration

TimeTrade

Code

 
file 1:
namespace NinjaTrader.Indicator
{
    public class myStorageIndiClass : Indicator
    {
        public static valuelist = new list<double>;
    }
}

file 2:
namespace NinjaTrader.Indicator
{
    public class myWriteIndi : myStorageIndiClass
    {
        protected override void OnBarUpdate()
        {
          valuelist.Add(Close[0]);
        }
}

file 3:
namespace NinjaTrader.Indicator
{
    public class myReadIndi : myStorageIndiClass
    {
        protected override void OnBarUpdate()
        {
         // use try or count check to prevent problems with empty lists !!!
          Close[0]=valuelist[0];
        }
}

May 9th, 2014, 10:01 AM

Check a newer thread here:

Global Variable

I'm trading CL with 4 different strategies across 3 different time frames. All I need is to have a variable that can store long or short when a strategy takes a position, or flat if no positions so that all my entries stay either long or short. I …

Mike

Sharing data between two indicators

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Sharing data between two indicators