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Hello,
Below I want to access the strat4 value which changes after I change it. Is there a way to initialize the variable once. pvtval:= If(C>Ref(SA,-25) AND (C>Ref(SB,-25)),1,0) and (Ref(strat4,-1)),1,0);
strat4=close;
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Rank: Member
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Hello,
I have something like the following:
pvtval:= If(C>Ref(SA,-25) AND (C>Ref(SB,-25)),1,0) and (Ref(strat4,-1)),1,0);
strat4=close;
Pvtval references the variable strat4 which is declared afterwards. As a result, it gives an error. Normally, if you initialize it on startup only, this would not happen.
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Rank: Advanced Member
Groups: Registered, Registered Users, Subscribers, Unverified Users
Joined: 10/28/2004(UTC)
Posts: 3,111
Location: Perth, Western Australia
Was thanked: 16 time(s) in 16 post(s)
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I still don't understand the issue: if you need to reference some variable "strat4" then it must be declared beforehand; you can re-use the variable later in the code. Remember though that MSFL scripts are fully evaluated for every bar (and lots has already been written about that).
Code:
SA:={something};
SB:={something}
strat4:={something}
pvtval:= If(C>Ref(SA,-25) AND (C>Ref(SB,-25)),1,0) and (Ref(strat4,-1)),1,0);
strat4=close; {re-use the variable}
{ do something else with the variable, strat4 (close) }
Check your ptval logic too... if all your conditions have to be TRUE for ptval to equal 1 (TRUE) then:
Code:
pvtval:= C>Ref(SA,-25) AND C>Ref(SB,-25) and Ref(strat4,-1);
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Rank: Member
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ok...in the example you showed....
for the first bar...it initialize strat4.
In the second bar....does it execute strat4:=(something) again? if not...I am good then
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Rank: Advanced Member
Groups: Registered, Registered Users, Subscribers, Unverified Users
Joined: 10/28/2004(UTC)
Posts: 3,111
Location: Perth, Western Australia
Was thanked: 16 time(s) in 16 post(s)
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To understand how MS interprets your code: For each bar, read the code from the top of the script to the bottom. If you said x=1 at the top of the script, and later in the script said x=2; on the next bar, as the script is being processed from top to bottom, x would equal 1 as there is no memory that x was 2 on the previous bar.
Each line of script is executed for each bar on the chart.
This is why there is a PREV function, it handles the situation when a (self) value has to be passed from bar to bar; and why PREV is so slow.
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