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you would need to create a function for this, something like this might work
function range(lookback,RangePercent)
{
RangeHigh = Close + (Close*(RangePercent/100));
RangeLow = Close - (Close*(RangePercent/100));
Count = 0;
for(n=1;n<lookback;n++)
{
count = count + ((Ref(Close,-n) <= RangeHigh) AND (Ref(Close,-n) >=
RangeLow));
}
return Count;
}
Plot( range(100,3) , " Support Percentage", ParamColor(
"Color",colorCycle ), ParamStyle("Style") );
--
Cheers
Graham Kav
AFL Writing Service
http://www.aflwriting.com
On 23/02/2008, Steve Dugas <sjdugas@xxxxxxxxxxx> wrote:
> Hi - If you are just concerned about today's value, you can try this (
> untested ). If you need to do it correctly for the entire array, then off
> the top of my head, you may need to rewrite it for a loop...
>
> Steve
>
> Lookback = 100;
> RangePercent = 3;
> LastClose = LastValue( Close );
> RangeHigh = LastClose + (LastClose*(RangePercent/100));
> RangeLow = LastClose - (LastClose*(RangePercent/100));
>
> WithinRange = (Close <= RangeHigh) AND (Close >= RangeLow);
> NoOfBars = Sum(WithinRange,Lookback);
> Plot( NoOfBars , " Support Percentage", ParamColor( "Color", colorCycle ),
> ParamStyle("Style") );
>
>
> ----- Original Message -----
> From: "chorlton_c_hardy" <chorlton-c-hardy@xxxxxxxxxxxxx>
> To: <amibroker@xxxxxxxxxxxxxxx>
> Sent: Friday, February 22, 2008 6:41 AM
> Subject: [amibroker] Help with Coding Problem Please
>
>
> > Hi All,
> >
> > Can anyone help out please, as I'm currently stuck with a coding
> > problem and struggling to resolve it.
> >
> > What I want to do is calculate the number of previous bars (within
> > the last 100bars) where the previous closes were within 3% of the
> > CURRENT Closing Price.
> >
> > What I have so far is shown below. The code is not very elegant as
> > I'm trying to keep it very simple in an attempt to find out where I'm
> > going wrong.
> >
> >
> > Lookback = 100;
> > RangePercent = 3;
> >
> > RangeHigh = Close + (Close*(RangePercent/100));
> > RangeLow = Close - (Close*(RangePercent/100));
> >
> > WithinRange = (Close <= RangeHigh) AND (Close >= RangeLow);
> >
> > NoOfBars = Sum(WithinRange,Lookback);
> >
> > Plot( NoOfBars , " Support Percentage", ParamColor( "Color",
> > colorCycle ), ParamStyle("Style") );
> >
> >
> >
> > At the moment, when I plot this code the line remains at 100.00.
> >
> > I believe the reason for this is that for each previous bar, the same
> > previous Close value is also referenced which results in the
> > Rangehigh & RangeLow ALWAYS being either side of the corresponding
> > close and therefore the WithinRange value ALWAYS being true, which is
> > clearly not what I want :-(
> >
> > Consequently, can anyone suggest how I can resolve this as my coding
> > skills are pretty limited.
> >
> > Thanks in advance,
> >
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