[amibroker] Re: Holding the last bar's value.

["Keith Bennett" <kbennett@xxxxxxxxxx>]

Walt,

Thank you for taking the trouble to dig out DT's post, which I had 
missed.
Much appreciated

Keith

--- In amibroker@xxxxxxxxxxxxxxx, "hairy_mug" <WSCHWARZ@xxxx> wrote:
> --- In amibroker@xxxxxxxxxxxxxxx, "Keith Bennett" <kbennett@xxxx> 
> wrote:
> > 
> > Problem solved (I think) using FLIP.
> > 
> > FLIP(Sig==1,Sig==2);
> > 
> > Is this the best/only way to handle this type of problem?
> > 
> > Keith
> > 
> > 
> > --- In amibroker@xxxxxxxxxxxxxxx, "Keith Bennett" <kbennett@xxxx> 
> > wrote:
> > > 
> > > Could someone help with the following which I have been trying 
to 
> > > solve with AMA or HOLD without success.
> > > 
> > > Sig = 
> > > IIf(C > ref(C,-1) AND V > Ref(V,-1),1,
> > > IIF(C < Ref(C,-1) AND V < Ref(V,-1),2,
> > > Ref(Sig,-1)));
> > > 
> > > Of course the last line doesn't work due to the self 
reference :-(
> > > 
> > > If the first condition is met I want to return "1" , and if the 
> > > second condition is met I want to return "2". If neither 
> condition 
> > is 
> > > met I want to retain the previuous value (daily bars).
> > > 
> > > Keith
> 
> Keith:
> here is someting that Dimitris Tsokakis posted:
> 
> There are 3 different things here [with the respective AFL 
solutions]:
> When a COND is true for many concecutive bars, we may ask 
> a. To remember the value of an array from the last bar the COND was 
> true, solved through Valuewhen(COND,array) or the equivalent 
> AMA(array,COND)
> b. To remember the value of an array from the first bar the COND 
was 
> true, solved through Valuewhen(COND AND Ref(COND,-1)==0,array) or 
the 
> equivalent AMA(array, COND AND Ref(COND,-1)==0)
> c. To remember the value of an array exclusively from the 
[confirmed] 
> last bar the COND was true, solved through 
> Valuewhen(COND==0 AND Ref(COND,-1),Ref(array,-1)) or the equivalent 
> AMA(Ref(array,-1), COND==0 AND Ref(COND,-1))
> 
> 
>           Walt


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