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Hi markus.
Do you want cond B to only be true today, if yesterdays cond A is
no longer true.
cond a is close > a 20 day MA.
cond b is close <50 day MA today, only if yesterdays cond A was
still true, but todays cond A is not true.
Place and observe this in the indi builder. Is this what you mean.
Aa=C>MA(C,20);
bb=C<MA(C,50);
cond1=aa;
cond2=bb AND BarsSince(Aa==1)==1;
Plot(ValueWhen(Cond2,C,1),"",6,4);
Plot(C,"",1,64);
Plot(MA(C,25),"",7,4);
Plot(MA(C,20),"",1,4);
Peter.
--- In amibroker@xxxxxxxxxxxxxxx, "IVA GmbH" <funnybiz@xxxx> wrote:
> Dimitris,
>
> actually itīs not. Exrem and Valuewhen judge the occurence from the
back
> ofthe chart while I try to find the first occurrence of a condition
right
> after another condition has taken place.
>
> Example: I want to detect the first instance of b right after a has
> happened:
> a a a b b b
>
> Using Valuewhen I would have to use Valuewhen(..,..,3). But I donīt
know in
> advance how many occurrences of b take place. So I thought the only
way to
> address this b is to find the first right AFTER the occurrence of a.
>
> Do you know what I mean???
>
> Thanks
>
> Markus
> ----- Original Message -----
> From: "DIMITRIS TSOKAKIS" <TSOKAKIS@xxxx>
> To: <amibroker@xxxxxxxxxxxxxxx>
> Sent: Monday, March 24, 2003 9:05 PM
> Subject: [amibroker] Re: Sequence of two conditions
>
>
> For
> cond1=a;
> cond2=b;
> you may have a sequence
> a, a, b, b, b, a
> with
> cond11=exrem(cond1,cond2);
> cond22=exrem(cond2,cond1);
> you will have
> a, b, , a
> ie only the forst occurrence of each a or b.
> Is this what you are looking for ?
> DT
> --- In amibroker@xxxxxxxxxxxxxxx, "IVA GmbH" <funnybiz@xxxx> wrote:
> > Folks,
> >
> > maybe you have a solution for the following:
> >
> > Iīd like to detect the first occurence of cond2 after cond1 has
> happened.
> >
> > I seemingly canīt use Valuewhen function since it calculates from
> the last bar, not from cond1 (i.e. I nedd a calculation forward
> rather than backward).
> >
> > So, in case that there are several instances of cond2 after cond1,
> I might get a wrong result.
> >
> > Could anyone help me, please?
> >
> > Thanks a lot
> >
> > Markus
>
>
>
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