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[amibroker] Re: Oscillator Within Linear Reg Lines (DT?)



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Ken,
There are numerous variations already posted here, but a fresh one is 
always better...
In the following code SU is the [automatic] support for per=5, RE is 
the parallel to SU from the highest H [as long as SU exists].
The Ratio will be equal to 0 when C=SU, negative when C<SU, from 0 to 
1 as soon as RE>C>SU and greater than 1 when C>RE.
I think it is a representative scaling.

per = 5;//calibrate the sensitivity
x = Cum(1);
s1=L;s11=H;
pS = TroughBars( s1, per, 1 ) == 0;
endt= LastValue(ValueWhen( pS, x, 1 ));
startt=LastValue(ValueWhen( pS, x, 2 ));
dtS =endt-startt;
endS = LastValue(ValueWhen( pS, s1, 1 ) );
startS = LastValue( ValueWhen( pS, s1, 2  ));
aS = (endS-startS)/dtS;bS = endS;
trendlineS = aS * ( x  -endt ) + bS; 
SU = IIf(x>startt-1,trendlineS,-1e10);
Plot(SU,"\nSU",colorYellow,styleThick);
X1=ValueWhen(Cum(IsTrue(SU))==1,X);
Y1=ValueWhen(X==X1,SU);
X2=LastValue(X);Y2=LastValue(SU);
SLOPE=(Y2-Y1)/(X2-X1);
YP=LastValue(Highest(IsTrue(SU)*H));
XP=LastValue(ValueWhen(H==YP,X));
RE=YP+SLOPE*(X-XP);
Plot((SU/SU)*RE,"\nRE",colorYellow,styleThick);
Plot(C,"\nC",1,64);
GraphXSpace=2;
ratio=(C-SU)/(RE-SU);
Title=Name()+", Ratio="+WriteVal(RATIO);

Note also that SU may be replaced by another line of your preference, 
code or manually drawn.
Dimitris 
--- In amibroker@xxxxxxxxxxxxxxx, "Ken Close" <closeks@xxxx> wrote:
> DT (or others):  
> 
> Can you (or anyone) point me to any previous messages or any 
previous
> work which has been done which would accomplish the following.  It 
seems
> like you would know given all of your mathematical creations 
(oblique
> fib lines, parabolic trendlines, etc).
> 
> I would like to manually draw a regression channel from date A to 
date
> B.
> I would then like a plot to show the position, in percent, of the 
price
> between the two outer regression lines. Alternatively, this code 
would
> also work within any two manually drawn and named trend lines that 
are
> roughly parallel as long as they start and stop on the same bar.
> 
> Ideally, the code would show greater than 100% (when price goes 
outside
> the upper regression line) or less than zero % (when price goes 
below
> the lower bar).  It seems it should link to regression lines that
> automatically extend.
> 
> Can you or anyone point to a message or to any code that could
> accomplish this?
> 
> Many thanks for any help.
> 
> Ken
> 
> ---
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