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Example:
Cond=Cross(StochD(),30);
Buy=Cond AND Sum(Cond,11)==1;
Filter=1;
AddColumn(Cond,"COND");
AddColumn(Buy,"BUY");
Cond is true [equal to 1] when the StochD() crosses the 30 line.
Buy is true when Cond is true AND the sum of the last 11 Cond values
is 1.
Since the last Cond value is 1 [from the first requirement] then the
only possible scenario is
0+0+0+0+0+0+0+0+0+0+1=1
because, if any of the previous 10 Cond values was 1, the sum would
be 2 or 3 etc.
Clear ?
Dimitris Tsokakis
--- In amibroker@xxxxxxxxxxxxxxx, "DIMITRIS TSOKAKIS" <TSOKAKIS@xxxx>
wrote:
> Yuki,
> conditions, in general, have binary output, their value is 0 or 1
> [FALSE or TRUE].
> If a condition is true for n consecutive bars, then the
> sum(COND,n) will be 1+1+...+1=n and
> sum(COND,n)==n
> If the condition is false for n consecutive bars, then sum(COND,n)
==0.
> Dimitris Tsokakis
> --- In amibroker@xxxxxxxxxxxxxxx, Yuki Taga <yukitaga@xxxx> wrote:
> > If I have a condition that needs to be true for B or S, but I want
> > that condition to NOT be true for at least any of the 10 previous
> > bars, is there an easier way to write it than by writing
> > ref(mycond,-1) AND ref(mycond,-2) etc?
> >
> > Yuki
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