[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [amibroker] Re: Losing Trades in Custom Backtester



PureBytes Links

Trading Reference Links

Hello,

In rotational mode it holds 2 * WorstRankHeld TOP ENTRY signals, in regular mode it holds
2 * MaxOpenPos TOP ENTRY signals. By changing settings you can change how many ENTRY signals are kept.
There is no point in holding more since they would never 
be used so why waste memory. All scale and exit signals are kept (because you never know at the scanning
time which exit signals will be needed because at that time you don't know which trades are taken).

Best regards,
Tomasz Janeczko
amibroker.com
----- Original Message ----- 
From: "C Alvarez" <yahoo@xxxxxxxxxxxx>
To: <amibroker@xxxxxxxxxxxxxxx>
Sent: Thursday, August 10, 2006 11:33 PM
Subject: [amibroker] Re: Losing Trades in Custom Backtester


> Tomasz,
> 
> It looks like the signal list is not holding all the signals that 
> expect to be in it. Is there some maximum number of signals that may 
> be put in the list? How is this determined?
> 
> I am expecting 18 and only getting 8. I have max positions set to 
> 10. And at this particular time I have only 2 positions open.
> 
> Thank you,
> Cey
> 
> --- In amibroker@xxxxxxxxxxxxxxx, "Tomasz Janeczko" <groups@xxx> 
> wrote:
>>
>> Hello,
>> 
>> Answer is here: http://www.amibroker.com/kb/2006/04/24/using-
> redundant-signals-for-entries/
>> 
>> 
>> Best regards,
>> Tomasz Janeczko
>> amibroker.com
>>   ----- Original Message ----- 
>>   From: C Alvarez 
>>   To: amibroker@xxxxxxxxxxxxxxx 
>>   Sent: Monday, August 07, 2006 10:04 PM
>>   Subject: [amibroker] Losing Trades in Custom Backtester
>> 
>> 
>>   I am using the Custom Backtester to iterate through the Signal 
> list. Depending on some additional conditions that I only can know 
> at this time, I might decide to skip a trade and set the PosSize = 
> 0. This prevents the trade from happening, as I want.
>> 
>>   The problem is that if I remove a trade from the Signal list and 
> then the Buy array has a buy for the next day, it is not showing up 
> the Signal list. And at this time I might want to take the trade. 
> Any suggestions on how I can do this?
>> 
>>   Here is the simplified code.
>> 
>>   Thanks,
>>   Cey
>> 
>> 
>>   SetCustomBacktestProc("");
>> 
>>   if( Status("action") == actionPortfolio )
>>   {
>>           bo = GetBacktesterObject();
>>           bo.PreProcess(); // Initialize backtester
>> 
>>           for(bar=0; bar<BarCount; bar++)
>>           {
>> 
>>                   for( sig = bo.GetFirstSignal(bar); sig; sig = 
> bo.GetNextSignal(bar) )
>>                   {
>>                           if( sig.IsEntry())
>>                           {
>>                                   if (some_condition) // don't 
> take trade
>>                                   {
>>                                           sig.PosSize = 0;
>>                                   }
>>                           }
>>                   }
>> 
>>           bo.ProcessTradeSignals(bar); // Process current bar's 
> signals
>> 
>>           }
>> 
>>           bo.PostProcess();
>>   }
>>
> 
> 
> 
> 
> 
> 
> Please note that this group is for discussion between users only.
> 
> To get support from AmiBroker please send an e-mail directly to 
> SUPPORT {at} amibroker.com
> 
> For other support material please check also:
> http://www.amibroker.com/support.html
> 
> 
> Yahoo! Groups Links
> 
> 
> 
> 
> 
> 
> 
> 
>