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I want UpVolume defined as Volume on days when the Close > Open.
DownVolume is Volume on days when Close < Open. Then I'd like to plot
two moving averages: one for UpVolume and one for DownVolume. The
problem is that on each day there will be no value for either UpVolume
or DownVolume. So if the Close > Open today, we'd have a value for
UpVolume (today's Volume) but no value for DownVolume. So I'd like the
value for DownVolume to remain at yesterday's DownVolume value.
Thanks, I'm new at this, I appreciate your patience.
--- In amibroker@xxxxxxxxxxxxxxx, "steesehwy" <steesehwy@xxx> wrote:
>
> The arguments for IIf are (condition, truearray, falsearray). In your
> first and second lines, you use a value for the "falsearray", not an
> array.
>
> Also, you seem to be trying to repeat the last value for volume when
> it isn't up or down - that is, repeat the last down volume on an up
> day. That will cause a falsely weighted average. For example, in a
> strong up trend, the down-volume average could consist of repeated
> entries of the last down day's volume. I don't have a good
> work-around, unless I knew a little more about what you are trying to
> accomplish.
>
> - Bill
>
>
> --- In amibroker@xxxxxxxxxxxxxxx, "l_abarr" <l_abarr@> wrote:
> >
> > I'm new at this. I'm getting an error in the first line because the
> > variable 'upvol' hasn't been initialized. I want UpVol to remain the
> > same as yesterday if C < O. Thanks for any help!
> >
> > UpVol =IIf(C > O, V, Ref(UpVol,-1));
> > DownVol =IIf(C < O, V, Ref(DownVol,-1));
> > Period = Param("Period",3,2,10,1);
> > UpVolAvg = EMA( UpVol, Period ) ;
> > DownVolAvg = EMA( DownVol, Period ) ;
> > Plot(UpVolAvg,"UpVolume", colorGreen);
> > Plot(DownVolAvg, "DownVolume", colorRed);
> >
>
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