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**NinjaTrader_Ray** · 10-26-2008, 05:11 PM

Likely you are accessing a DataSeries in the Values collection that does not exist. Do you have 4 plots added to the indicator in the Initialize() method? Since you are accessing Values[3], this means you must have called Add() 4 times to add new plots which internally generates 4 DataSeries that hold the values for each of the plots.

**superarrow** · 10-26-2008, 07:18 PM

Ray,
Thanks for for the prompt reply, and on a Sunday.

You are right - there four Add()s, but the program still fails to plot when a previous values such as Values[3][2] - ie previous close value is referenced.

Code:

[SIZE=2][FONT=Courier New][SIZE=2][FONT=Courier New]((Values[[/FONT][/SIZE][/FONT][/SIZE][FONT=Courier New][SIZE=2][COLOR=#800080][FONT=Courier New][SIZE=2][COLOR=#800080][FONT=Courier New][SIZE=2][COLOR=#800080]3[/COLOR][/SIZE][/FONT][/COLOR][/SIZE][/FONT][/COLOR][/SIZE][/FONT][FONT=Courier New][SIZE=2][FONT=Courier New][SIZE=2]][[/SIZE][/FONT][/SIZE][/FONT][FONT=Courier New][SIZE=2][COLOR=#800080][FONT=Courier New][SIZE=2][COLOR=#800080][FONT=Courier New][SIZE=2][COLOR=#800080]0[/COLOR][/SIZE][/FONT][/COLOR][/SIZE][/FONT][/COLOR][/SIZE][/FONT][FONT=Courier New][SIZE=2][FONT=Courier New][SIZE=2]] > Values[[/SIZE][/FONT][/SIZE][/FONT][FONT=Courier New][SIZE=2][COLOR=#800080][FONT=Courier New][SIZE=2][COLOR=#800080][FONT=Courier New][SIZE=2][COLOR=#800080]3[/COLOR][/SIZE][/FONT][/COLOR][/SIZE][/FONT][/COLOR][/SIZE][/FONT][FONT=Courier New][SIZE=2][FONT=Courier New][SIZE=2]][[/SIZE][/FONT][/SIZE][/FONT][FONT=Courier New][SIZE=2][COLOR=#800080][FONT=Courier New][SIZE=2][COLOR=#800080][FONT=Courier New][SIZE=2][COLOR=#800080]1[/COLOR][/SIZE][/FONT][/COLOR][/SIZE][/FONT][/COLOR][/SIZE][/FONT][FONT=Courier New][SIZE=2][FONT=Courier New][SIZE=2]]) && (Values[[/SIZE][/FONT][/SIZE][/FONT][FONT=Courier New][SIZE=2][COLOR=#800080][FONT=Courier New][SIZE=2][COLOR=#800080][FONT=Courier New][SIZE=2][COLOR=#800080]3[/COLOR][/SIZE][/FONT][/COLOR][/SIZE][/FONT][/COLOR][/SIZE][/FONT][FONT=Courier New][SIZE=2][FONT=Courier New][SIZE=2]][[/SIZE][/FONT][/SIZE][/FONT][FONT=Courier New][SIZE=2][COLOR=#800080][FONT=Courier New][SIZE=2][COLOR=#800080][FONT=Courier New][SIZE=2][COLOR=#800080]1[/COLOR][/SIZE][/FONT][/COLOR][/SIZE][/FONT][/COLOR][/SIZE][/FONT][FONT=Courier New][SIZE=2][FONT=Courier New][SIZE=2]] < Values[[/SIZE][/FONT][/SIZE][/FONT][FONT=Courier New][SIZE=2][COLOR=#800080][FONT=Courier New][SIZE=2][COLOR=#800080][FONT=Courier New][SIZE=2][COLOR=#800080]3[/COLOR][/SIZE][/FONT][/COLOR][/SIZE][/FONT][/COLOR][/SIZE][/FONT][FONT=Courier New][SIZE=2][FONT=Courier New][SIZE=2]][[/SIZE][/FONT][/SIZE][/FONT][FONT=Courier New][SIZE=2][COLOR=#800080][FONT=Courier New][SIZE=2][COLOR=#800080][FONT=Courier New][SIZE=2][COLOR=#800080]2[/COLOR][/SIZE][/FONT][/COLOR][/SIZE][/FONT][/COLOR][/SIZE][/FONT][FONT=Courier New][SIZE=2][FONT=Courier New][SIZE=2]]))[/SIZE][/FONT]
[/SIZE][/FONT]

In the code segment above, the code fails to plot but when Values[3][1] < Values[3][2] is dropped from the program, it plots ok.

Cheers,
SA

**NinjaTrader_Ben** · 10-27-2008, 08:19 AM

Hello,

Try putting if(CurrentBar < 3) return; at the top of your OnBarUpdate() block. The reason I say this is in your original post you have:
if (Values[0][0]>Values[0][1])//Current open>previous open
{BarColor = barColorUp;}

This is referencing a bar in history "[1]" which does not exist yet and it is not included in your CurrentBar if check block.

**mrlogik** · 10-27-2008, 08:38 AM

are you checking your LOG for errors by chance?

**superarrow** · 10-27-2008, 08:40 PM

Anhony,
Yes and the error is:

HTML Code:

'Error on calling the 'OnBarUpdate' method for indicator 'NasHA' on bar 1: Index was out of range. Must be non-negative and less than the size of the collection.'

I would appreciate any input as I am at a loss and reached my programming limitation. Hope you can help.

Cheers,
SA

**mrlogik** · 10-27-2008, 08:51 PM

SA,

Did you do as Ben suggested?
The very first code logic should read ...

Code:

if(CurrentBar <= 3)
    return;

I suggest you get rid of the other CurrentBar check as well.

let me know

**superarrow** · 10-27-2008, 09:01 PM

Thank you Anthony. Grateful you came by. Works like a charm - considering its the only indicator I ever wanted. Very grateful.

Side note, are you still going to start the 'Visual Studio ...' development that you talked about elsewhere in the forum. I would like to learn from people like you. It should a great opportunity for people like myself to broaden my programming base.

Kind regards,
SA

**mrlogik** · 10-27-2008, 09:06 PM

SA,

I intend to; haven't heard anything back yet from NT about setting up another subject within the forum for Visual Studios work.

Hopefully soon we'll see and can all learn from each other.

**superarrow** · 10-27-2008, 09:18 PM

Ben,
Thanks for your suggestion. Sorry never got to see it until mrlogik alerted me to it. You had right too.

Cheers,
SA

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