What causes this error in the tester?

Do you have correct W1 data for that symbol ?  open a W1 chart and check . . . 

Hi

Thanks for the reply.

I have just tried deleting importing the history covering all timeframes including M1 but the issue is still there. I tired using:

iBarShift(Symbol(),Period(),iTime(Symbol(),PERIOD_D1,2),false);

 But that also returns the wrong value.

 

Thanks

 

Antony 

Under the tester you only have 1000 bars of history (or less.) so the iBarShift is pointing to the earliest bar.

I just tried your original code on my GBPUSD data from April 2012 and I get the correct result to within 1 bar,  perhaps you should show your code or at least code something else that you can share that reproduces the problem.

I used this line of code in my test EA . . .

   Comment("Week start bar number on timeframe ", Period(), " is # ",  iBarShift(Symbol(),Period(),iTime(Symbol(),PERIOD_W1,0),false) );

 and get this . . .

 

Hi again, I tried an EA with just this:

  

//+------------------------------------------------------------------+
//|       Start                                                      |
//+------------------------------------------------------------------+
void start(){Print("Week start bar = ",iBarShift(Symbol(),Period(),iTime(Symbol(),PERIOD_W1,0),false));

return;
}

//+------------------------------------------------------------------+ 
//END

It still returns this error, I have tried, reinstalling the terminal, trying a different terminal, repopulating the history data with new data.

Any idea?

Thanks

Antony 

Also forgot to add, I tried this also:

 

Print("itime = " ,iTime(Symbol(),PERIOD_W1,0));

and it returns 0  

How are you repopulating the data ?  all my data is derived from tick data,  the tick data is used to create the M1, M5, M30, etc data so I know I have no mismatches in my data.  

You might also try letting the Strategy Tester run for a full week beyond the start point and then see what result it gives,  that might tell you something. 

Testing Features and Limits in MetaTrader 4 - MQL4 Articles states It also states "Zero bar of another timeframe for the same symbol under test is modeled approximately" which is no longer true.