Ara, thanks for responding.  Actually what I'm trying to do is a 
little different.  Here is what the array might look like

        signal  [EMAIL PROTECTED]       avgofmyobsv
        0       --
        1       --
        0       --
        0       --
        0       --
        0       --
        0       --
        0       --
        0       --
        0       --
        0       --
        0       --
        0       --
        0       .05             .050
        0       --
        0       --
        1       --
        0       --
        0       --
        0       --
        0       --
        0       --
        0       --
        0       --
        0       --
        0       --
        0       --
        0       --
        0       .06             .055
        0       --
        0       --
        1       --
        0       --
        0       --
        0       --
        0       --
        0       --
        0       --
        0       --
        0       --
        0       --
        0       --
        0       --
        0       .07             .060


--- In amibroker@yahoogroups.com, "Ara Kaloustian" <[EMAIL PROTECTED]> wrote:
>
> if you are using loops and you know when your signal was generated, 
use that 
> bar number as the starting poing point for your loop. Pick an end 
point as 
> you edesire.
> 
> a = SignalBarNumber;
> b = Bars required in your calculation;
> 
> for (i=a; i< a+b; i++)
> ...
> 
> ----- Original Message ----- 
> From: "cdepuy" <[EMAIL PROTECTED]>
> To: <amibroker@yahoogroups.com>
> Sent: Monday, April 28, 2008 2:40 PM
> Subject: [amibroker] calculating the mean of only some of the 
observations 
> in an array ?
> 
> 
> > Without requiring loops that work through the whole barcount, can
> > someone point out to me how to exclude certain values in an array
> > when calculating a statistic across an array?
> >
> > I must be missing something.  I am trying to calculate the mean of
> > some values that occur only occassionally (after my signal) using
> > Amibroker.  But,what happens is all the values between my signals 
get
> > included in the calculation.  I know the solution is easy, but I
> > cannot figure it out.
> >
> > //figure highest value that occurs between my signals and the
> > next "x" following the signal
> > Cond6 = {some condition that i am investigating, like v > 5*ma
(v,50)
> > NumBars = 12;
> > hV = IIf(BarsSince(Cond6) == NumBars,HHV(H,BarsSince(Cond6))-
ValueWhen
> > (Cond6,C),Null);
> >
> > //now calculate the mean of all the hv 's that occur
> > mean = ma(hv,NumBars*50);  //this line I am having trouble with
> > filter=1;
> > addcolumn(mean,"mean",1.2);
> > //then perform more statistics...(etc).
> >
> >
> >
> > ------------------------------------
> >
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