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9.1- 9.5
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Created: by Pitrader Attachments:0

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9.1- 9.5

  #1 (permalink)
Canada
 
 
Posts: 10 since Feb 2011
Thanks: 2 given, 0 received

9.1- 9.5

I have an indicator that works just fine on ver 9.1 but I get an error when applied to 9.5 or higher. Placed on a 15 second chart to expedite, once the active bar closes I get a 'Vector is empty or invalid index' error. I have the code below. Any help would be appreciated.

 
Code
 using elsystem ; 								
using elsystem.drawingobjects ; 								
using elsystem.drawing ; 								
								
inputs: 								
	BackBars(10), 							
    PtOffsetPoint(0.5), UniqueID("GGG"); 								
	 							
Vars: 								
	ii(0), ptoffset(0), TextLabel BarCounterTxt( NULL ), TextLabel DeleteText(NULL), BNPoint PosBN( NULL ); 							
	 							
Arrays: TXID[100](0);	 							
method void CreateBNLabel(int barcnt) 								
	begin 							
	{ create position for the text label by bar number using the BNPoint class } 							
	PosBN = BNPoint.Create( CurrentBar - barcnt, Low[barcnt]-PtOffsetPoint) ; 							
		 						
	{ create the text label } 							
	BarCounterTxt = TextLabel.Create( PosBN, Numtostr(barcnt+1,0) ) ; 							
	BarCounterTxt.Font = Font.Create( "Arial", 8 ) ; 							
	BarCounterTxt.HStyle = HorizontalStyle.center ; 							
	BarCounterTxt.VStyle = VerticalStyle.top;							
	BarCounterTxt.Color = Color.Red ; 							
	BarCounterTxt.Tag = UniqueID astype string ;							
		 	 					
	BarCounterTxt.Persist = true ; 							
	end ;	 						
								
method void ShowText() 								
	begin 							
		DrawingObjects.Add( BarCounterTxt ) ; 						
	end;							
//Deleting the Old Texts								
method void deleteAllText()  								
Var: int textList, int textCnt,int jj  ;  								
begin  								
    textList = ObjectCategory.TextLabel;   								
    textCnt = DrawingObjects.Items[textList].Count;  								
    if (LastBarOnChart) then   								
    begin  								
        for jj = 0 to TextCnt - 1   								
        begin  								
            DeleteText = DrawingObjects.Items[textList][jj] astype TextLabel;  								
            if (DeleteText <> NULL) and DeleteText.Tag astype string = UniqueID then DrawingObjects.Delete(DeleteText);  								
        end;  								
    end;  								
end;     								
								
	if (LastBarOnChart) and (BarStatus(1)=2) then 							
	begin 		 					
		deleteAllText();						
		for ii = 0 to BackBars -1						
		begin 						
			CreateBNLabel(ii);					
			ShowText();					
		end; 						
	end;

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  #2 (permalink)
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  #3 (permalink)
 Vendor: www.abctradinggroup.com 
Hamburg Germany
 
Trading Experience: Advanced
Platform: Multicharts, Tradestation
Broker/Data: DTN IQ
Favorite Futures: ES
 
Posts: 2,101 since Apr 2013
Thanks: 377 given, 1,346 received


Pitrader,

this might be caused by your method that deletes the text, as you loop through elements of the drawing collection and delete elements from it during the loop. This can lead to a situation where you try to access an index that is not longer present in the collection, which would trigger the error.

Regards,

ABCTG

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