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S4,
Didn't the ROC work?
Preston
--- In equismetastock@xxxxxxxxxxxxxxx, Manset <manset01@xxxx> wrote:
>
>
> Hi Bellamy,
>
> Thanks for your explanations but the aim is to code the flatness of
the
> bands which is rather difficult.
>
> Regards,
> S4
>
>
>
> bellamy_29m a écrit :
>
> > Why are you all messing around with Bollinger indicators, when the
> > BBands are just MAs plus/minus a number of SDs.
> >
> > > (100*(BBandTop(C,20,S,2)-BBandBot(C,20,S,2)))/BBandBot(C,20,S,2)
> >
> > (100*(BBandTop(C,20,S,2)-BBandBot(C,20,S,2)))/BBandBot(C,20,S,2)
> > =(100*(Mov(C,20,S)+2*Stdev(C,20))-(Mov(C,20,S)-2*Stdev(C,20)))/
(Mov(C,20,S)-2*Stdev(C,20))
> > =(100*Mov(C,20,S)+2*Stdev(C,20)-Mov(C,20,S)+2*Stdev(C,20))/(Mov
(C,20,S)-2*Stdev(C,20))
> > =(100*4*Stdev(C,20))/(Mov(C,20,S)-2*Stdev(C,20))
> > = 400*(Stdev(C,20)/(Mov(C,20,S)-2*Stdev(C,20))
> > = 400*(Stdev(C,20)/(Mov(C,20,S)-2*Stdev(C,20))
> > remove the scaling factor by dividing by 400
> > = Stdev(C,20)/(Mov(C,20,S)-2*Stdev(C,20))
> >
> > = Stdev(C,20)/BBandBot(C,20,S,2)
> >
> > which is much simpler and easy to understand!
> >
> >
> > > (BBandTop(C,20,E,2)-BBandBot(C,20,E,2))
> >
> > which also goes like:
> > (BBandTop(C,20,E,2)-BBandBot(C,20,E,2))
> > =(Mov(C,20,E) + 2*Stdev(C,20)) - (Mov(C,20,E) - 2*Stdev(C,20))
> > = Mov(C,20,E) + 2*Stdev(C,20) - Mov(C,20,E) + 2*Stdev(C,20))
> > = 4*Stdev(C,20)
> > but you get the same information without the scaling factor of
4...
> >
> > = Stdev(C,20)
> >
> > So why are you all playing around with BBandTops and BBandBots? I
> > think the important thing is to understand where the information
and
> > indicators come from. People like the look of massively long and
> > complicated formula; I think they are too prone to error, and I am
> > also pretty sure that the authors either:
> > a. purposely make their code more complicated than it needs be to
hide
> > the truth their indicators dont work, "If it looks complicated it
must
> > work!" mallarky. A certain person who visits this forum has a
> > commercial product that contain EIGHT formulas, that when
combined in
> > various combinations form his trading system. It doesnt matter
what
> > the combination is, the result is always the same and can be
rewritten
> > VERY EASILY into three short lines of code. BTW he expects you
to pay
> > for eight formula annually!
> >
> > b. have no idea about they are doing and hope people will blindly
> > follow them into the poor house.
> >
> > Have a go at these indicators, which if I have done my maths
correctly
> > will reproduce the original indicators exactly (with scaling),
and are
> > a lot more easily comprehended. If you understand what is going
on,
> > you are in a better position to FULLY EXPLOIT the situation.
> >
> >
> > Thats just my two cents!
> >
> >
> >
> >
> >
> >
> >
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