Sharing Int values between indicators

May 7th, 2012, 03:35 PM

Hello traders,

I ran into a problem when developing further SwingRays2 here on futures.io (formerly BMT). The problem: I need one indicator to make an Int value public. So I write SharingIndi, which has a private int and the value of this int is shown to the rest of the world.

Code

#region Variables
	private int currBar;
#endregion

...

       protected override void OnBarUpdate()
        {
            currBar = CurrentBar * 2;
	    Print("Indi   -> Bar=" + CurrentBar + " Value=" + CurrBar );
        }
...
        #region Properties
        [Browsable(false)]	
        [XmlIgnore()]		
        public int CurrBar
        {
            get { return currBar; }
        }

        #endregion

Now I want to see whether those CurrBar values are really accesible from outside, so I write another indi.

Code

      #region Variables
		private SharingIndi Indi;
       #endregion

	protected override void OnStartUp()
	{
		Indi = SharingIndi();
	}

        protected override void OnBarUpdate()
        {
		Print("Checker -> Bar=" + CurrentBar + " Value=" + Indi.CurrBar );
        }

and running both on the same chart reveals that Indi.CurrBar returns 0 all the time. Namely, the output is like

Quoting

Indi -> Bar=27 Value=54
Indi -> Bar=28 Value=56
Indi -> Bar=29 Value=58
Indi -> Bar=30 Value=60
Checker -> Bar=0 Value=0
Checker -> Bar=1 Value=0
Checker -> Bar=2 Value=0
Checker -> Bar=3 Value=0
Checker -> Bar=4 Value=0

What am I doing wrong? Support does not help despite I have a live license...Attached are both indis.
Many thanks for any hint,
Daniel

May 7th, 2012, 04:44 PM

I have imported this zip, and it appears to be working as expected on my end. Are you refreshing your output window? Otherwise the call is proper and the output is as expected.

You have an if statement in the SharingIndi which states to return(quit) if the CurrentBar < 5. You have 5 examples listed. What was the 6th bar output? With this statement intact, the first 5 bars will return 0 since it never gets to the currBar calculation and hence, any reference to the Indi.CurrBar will return 0 WHILE CurrentBar < 5.

Any time you reference something in one indicator from within another, the conditions set within that reference indicator have to be met before variables will be anything other than what they are set to during the Variable or Initialize region.

May 8th, 2012, 02:47 AM

Hello Caveman,

yes Im refreshing my Output window. Attached is a video of how the results appear on my end, mind the TV in the back

In have added a

Code

if ( CurrentBar < 5 )
   return;

line into the Checker indi. As Im attaching both indis to an empty chart, I have no idea what might be going wrong.
Thanks again!
Daniel

May 8th, 2012, 09:51 AM

What you are seeing is the back-data on your data series "Days to load" being ran through the indicator. As these contain no real bar update calls they get fed through your indicator without meeting the CurrentBar rule.

Bottom line is, the information from the sharing indi is making it to the checker. You need to run live data through it to get the 0's to go away. I saw the same behavior on mine, but it cleared as soon as data was being fed in. Back data loaded into a chart is considered historical and is handled differently than live data by the OnBarUpdate method.

Hope this helps.

Sharing Int values between indicators

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Sharing Int values between indicators