Re: Declare variable for future use (was TJ: Actual trade profit vs. Theoretical)

["nirvana1x" <nirvanaiam@xxxx>]

Mike i am having some trouble understanding what you ask.

looking at youre simple formula below

(Buy = longEntry and ValueWhen(Sell, tradeProfit) < 0;
Sell = LongExit;)

do you want the long entry condition to be true first, then have 
the sell condition at a certain profit level to place a buy as an 
entry.
and is your sell condition (long exit) the next true sell(long 
exit) condition or do you want it to be the sell which the buy is 
based on. 

john.


--- In amibroker@xxxx, "mik954" <mik-u@xxxx> wrote:
> Hi, all!
> 
> Well, so far no any response on my initial post (even on direct e-
> mail to support@xxxx). It's weird. Maybe my question wasn't 
> clear, or Tomasz was too busy.
> 
> OK, let me ask in a different way. Is there any way in AFL to 
declare 
> variable/array and use its previos value before setting current one?
> 
> I mean:
> 
> // var tradeProfit; // declare variable for future use
> 
> Buy = longEntry and ValueWhen(Sell, tradeProfit) < 0;
> Sell = LongExit;
> 
> tradeProfit = ValueWhen(Sell, SellPrice) - ValueWhen(Buy, BuyPrice);
> 
> 
> Any suggestions are welcome.
> 
> Thanks,
> Mike
> 
> 
> --- In amibroker@xxxx, "mik954" <mik-u@xxxx> wrote:
> > Tomasz,
> > 
> > On February 22, 2002 you wrote the code for teoretical trade 
profit:
> > 
> > <<<cut here>>>
> > 
> > Let's suppose that you system generates
> > entry and exit signals based on break out:
> > 
> > LongEntry = ... formula here ...
> > LongExit = .... formula here...
> > 
> > Now you can
> > 
> > LongEntry = ExRem( LongEntry, LongExit );
> > LongExit = ExRem( LongExit, LongEntry );
> > 
> > TheoreticalTradeProfit = ValueWhen( LongExit, SellPrice ) -
> > alueWhen( LongEntry, BuyPrice );
> > 
> > Buy = LongEntry AND TheoreticalTradeProfit < 0; // enter only if 
> > previous trade was loosing
> > Sell = LongExit;
> > 
> > <<<cut here>>>
> > 
> > Could you tell me please how in AFL I may calculate trade profit 
> > based on ACTUAL Buy/Sell signals to use previos profit value in 
> next 
> > Buy signal calculation?
> > 
> > I mean a code like this:
> > 
> > <<<cut here>>>
> > 
> > var tradeProfit; // declare variable for future use
> > 
> > Buy = longEntry and Ref(tradeProfit, -1) < 0;
> > Sell = LongExit;
> > 
> > tradeProfit = ValueWhen( Sell, SellPrice ) - ValueWhen( Buy, 
> > BuyPrice );
> > 
> > <<<cut here>>>
> > 
> > 
> > Thanks,
> > Mike