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Graham & Steve,
Many Thanks guys for your assistance. Its v much appreciated.
I'll take a look at your code and try to fully understand it. For
some reason I seem to struggle with looping.
Thanks once again....
Chorlton
--- In amibroker@xxxxxxxxxxxxxxx, Graham <kavemanperth@xxx> wrote:
>
> 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@xxx> 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@xxx>
> > 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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