Re: [amibroker] programming / logic ?

["jonf" <jonf_ca@xxxx>]

TIA,
 
Your are looking z in the future, and this mean that the buy 
would be generate before you know that su could happen ! I think you should 
generate the buy with the trigger z and confirm if the setup was also true today 
or in thelast past 4 day:
 
buy = z and (su and ref(su,-1) or ref(su,-2) or ref(su,-3) or 
ref(su,-4));
 
or the same result but more simple and expressive: 

 
buy = z and barssince(su)<=4;
 
The above formula return a buy also when su happen the same 
day as z but not necessary during the last past 4 days. If you need suto 
be true in one of the past 4 day even if it was true today : 
 
buy = z and barssince(ref(su,-1))<4
 
or
 
buy = z and (ref(su,-1) or ref(su,-2) or ref(su,-3) or 
ref(su,-4));
 
However, maybe someone else with more experience could confirm if my 
logic is correct !
 
Hope this will help
 
Best !
 
Jon
<BLOCKQUOTE 
>
----- Original Message ----- 
<DIV 
>From: 
<A title=traders10@xxxx 
href="">traders10@xxxx 
To: <A title=amibroker@xxxxxxxxxx 
href="">amibroker@xxxxxxxxxxxxxxx 
Sent: Sunday, September 02, 2001 4:50 
PM
Subject: [amibroker] programming /logic 
?
Lets say I have a set up event  su = cross(x, y); 
Then I look for a trigger event, z, over the next 4 days.  Zis 
some arbitrary complex function.Does this logic work if the 
trigger occurs, for example, 3 days after the set up event? buy = 
su and ( ref(z,1) or ref(z,2) or ref(z,3) or ref(z,4));Ifthis 
is wrong, what approach should I be using for this 
situation?TIATraderYour 
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