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[amibroker] Re: Losing Trades in Custom Backtester



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Tomasz,

I am doing regular mode. I coded this up like in the example in the 
KB you pointed to. How is "TOP ENTRY" signals dtermined if 
PositionScore is not used as stated in the KB article.

Thanks,
Cey

--- In amibroker@xxxxxxxxxxxxxxx, "Tomasz Janeczko" <groups@xxx> 
wrote:
>
> 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@xxx>
> 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@> 
> > 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
> > 
> > 
> > 
> > 
> > 
> > 
> > 
> > 
> >
>