Error on plotting last value for indicator

[Ralph]

Hi,

the following error message is written into to the control center log (category 'Default') in conjunction with market replay:

Error on plotting last value for indicator 'MACD'. Please check the 'OnBarUpdate' method: Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index

I use a strategy with the following contents:

[FONT=Courier New][FONT=Courier New][SIZE=2][COLOR=#0000ff][SIZE=2][COLOR=#0000ff]protected [/COLOR][/SIZE][/COLOR][/SIZE][SIZE=2][COLOR=#0000ff][SIZE=2][COLOR=#0000ff]override [/COLOR][/SIZE][/COLOR][/SIZE][SIZE=2][COLOR=#0000ff][SIZE=2][COLOR=#0000ff]void[/COLOR][/SIZE][/COLOR][/SIZE][/FONT][SIZE=2][FONT=Courier New] Initialize()[/FONT][/SIZE]
[SIZE=2][FONT=Courier New]{[/FONT][/SIZE]
[SIZE=2][FONT=Courier New]Add(MACD([/FONT][/SIZE][FONT=Courier New][SIZE=2][COLOR=#800080][SIZE=2][COLOR=#800080]12[/COLOR][/SIZE][/COLOR][/SIZE][SIZE=2],[/SIZE][SIZE=2][COLOR=#800080][SIZE=2][COLOR=#800080]26[/COLOR][/SIZE][/COLOR][/SIZE][SIZE=2],[/SIZE][SIZE=2][COLOR=#800080][SIZE=2][COLOR=#800080]9[/COLOR][/SIZE][/COLOR][/SIZE][/FONT][SIZE=2][FONT=Courier New]));[/FONT][/SIZE]
[SIZE=2][FONT=Courier New]CalculateOnBarClose = [/FONT][/SIZE][SIZE=2][COLOR=#0000ff][FONT=Courier New][SIZE=2][COLOR=#0000ff]false[/COLOR][/SIZE][/FONT][/COLOR][/SIZE][SIZE=2][FONT=Courier New];[/FONT][/SIZE]
[SIZE=2][FONT=Courier New]}[/FONT][/SIZE]
 
[FONT=Courier New][SIZE=2][COLOR=#0000ff][SIZE=2][COLOR=#0000ff]protected [/COLOR][/SIZE][/COLOR][/SIZE][SIZE=2][COLOR=#0000ff][SIZE=2][COLOR=#0000ff]override [/COLOR][/SIZE][/COLOR][/SIZE][SIZE=2][COLOR=#0000ff][SIZE=2][COLOR=#0000ff]void[/COLOR][/SIZE][/COLOR][/SIZE][/FONT][SIZE=2][FONT=Courier New] OnBarUpdate()[/FONT][/SIZE]
[SIZE=2][FONT=Courier New]{[/FONT][/SIZE]
[FONT=Courier New][SIZE=2][COLOR=#0000ff][SIZE=2][COLOR=#0000ff]if[/COLOR][/SIZE][/COLOR][/SIZE][SIZE=2] (CurrentBar <= [/SIZE][SIZE=2][COLOR=#800080][SIZE=2][COLOR=#800080]26[/COLOR][/SIZE][/COLOR][/SIZE][SIZE=2]) [/SIZE][SIZE=2][COLOR=#0000ff][SIZE=2][COLOR=#0000ff]return[/COLOR][/SIZE][/COLOR][/SIZE][/FONT][SIZE=2][FONT=Courier New];[/FONT][/SIZE]
[SIZE=2][FONT=Courier New]}[/FONT][/SIZE]
[/FONT]

Nothing else. NT version is 6.5.1000.7

Following steps are done:
- Start replay connection (recorded some hours of tick data in advance).
- Open a new 150-tick-chart and apply this test stratey
- Start replay with speed 100x and wait until the MACD starts to operate
- Stop replay
- Drag the replay slider back into its initial position, this is causing that error message. At the next run the MACD doesn't show up anymore.

Regards
Ralph

[NinjaTrader_JoshP]

Ralph,

Try just throwing the MACD onto the chart without the strategy and running again. See if the MACD alone gives you errors.

[Ralph]

Your suspicion is correct, Josh. Also without the strategy loaded but just the MACD causes this error message to occure. Have to point out that this happens only when dragging the slider back to its zero-position. As long as I restart with just a single bar left on the chart, it works fine.

Regard
Ralph

[NinjaTrader_JoshP]

If you could mail us your market replay files that would be great. Please send a note to josh [dot] peng [at] ninjatrader [dot] com and mention this thread. Thanks.

[NinjaTrader_Dierk]

This is a bug which will be fixed with next update. Thanks for reporting.

[Ralph]

Many thanks to the NT-team.

Here is a "nice to have" for the market replay: A single-step-button which advances one single bar or tick, would be a nice debugging aid.

Regards
Ralph

[NinjaTrader_JoshP]

Ralph,

Thank you for the suggestion. We will add it to the list of future considerations.