[amibroker] Re: Accessing the current "Buy/Short" value during backtesting??

["cnh4_2000" <cnh4_2000@xxxxxxxxx>]

Thanks for your response. Basically I have two set of profit/stop 
loss factors which are all constants. I want to use one set 
profit/stop loss factors for BUY signals and another set for SHORTS. 
This is because my optimal stop loss can be safely set much tighter 
on my short positions. However, as it is not and I only backtest 
Long and Short individuals since I presently have to manually change 
the factors before each backtest.
 

--- In amibroker@xxxxxxxxxxxxxxx, "gp_sydney" <gp.investment@xxx> 
wrote:
>
> What exactly are you trying to achieve? Are Value1 and Value2
> constants or arrays? Is ProfitFactor supposed to be constant during
> the backtest based on some particular bar's buy/short values, or
> should it also be an array that potentially changes every bar?
> 
> From what you're asking in your first paragraph, you'd have 
something
> like:
> 
> action1 = Buy && !Short;
> action2 = !Buy && Short;
> 
> Here action1 and action2 are both arrays. What are you then 
wanting to
> do with those results?
> 
> Regards,
> GP
> 
> 
> --- In amibroker@xxxxxxxxxxxxxxx, "cnh4_2000" <cnh4_2000@> wrote:
> >
> > I'm backtesting a system which requires me to take action #1 if 
BUY 
> > was true(and SHORT was false) and take action #2 if SHORT was 
true
> > (and BUY was false). Obviously, this evaluation is done after 
after 
> > the BUY and SHORT signals are checked. 
> > 
> > Here are the different things I've tried which all dont seem to 
be 
> > producing the right result. In other words, when backtesting 
long 
> > trades only, my profit is different when I manually 
> > section "ProfitFactor" compared to when I attempt to dynamically 
set 
> > it based on whether or not BUY is true.
> > 
> > Attempt 1
> > 
> > ProfitFactor=IIf(Lastvalue(Buy),Value1,Value2);
> > 
> > Attempt 2
> > 
> > ProfitFactor=IIf(Lastvalue(Buy,False),Value1,Value2);
> > 
> > Attempt 3
> > 
> > ProfitFactor=IIf(Buy,Value1,Value2);
> > 
> > Attempt 4
> > 
> > ProfitFactor=IIf(selectedvalue(Buy,False),Value1,Value2);
> > 
> > 
> > 
> > 
> > None of these seem to produce the right result during my 
backtest. :
> > ( Any advise would be appreciated. Thanks.
> >
>




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