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[amibroker] Re: Never Took Trigonometry



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Presactly.  For example, x=LinRegSlope(log10(C),10); will pass the
c-test but y=LinRegSlope(C,10); will not.

--- In amibroker@xxxxxxxxxxxxxxx, "Fred" <ftonetti@xxx> wrote:
>
> Yes ... 
> 
> The angle is a relation of rise ( Price ) over run ( Time )
> 
> When rise is measured in terms of percent or log10 of price there 
> will be no change in the angle after a split ... Percentage or log10 
> based moves in price are really the only reasonable way to measure 
> them any way ... or chart them for that matter ... this is for the 
> same reason that CAR is calculated the way it is i.e Total Gain ^ ( 
> 1 / Number of Years ) as opposed to something that typically gets 
> referred to as ANN and has a formula like Total Gain / Number of 
> Years ... The latter is at least imho a semi meaningless statistic.
> 
> --- In amibroker@xxxxxxxxxxxxxxx, "quanttrader714" 
> <quanttrader714@> wrote:
> >
> > Would you agree there's a problem if the slope changes when the 
> stock
> > splits?
> > 
> > --- In amibroker@xxxxxxxxxxxxxxx, "Joe Landry" <jelandry@> wrote:
> > >
> > > Don't apologize but you're not bursting my bubble, yet! ( but I'm
> > open to 
> > > having it deflated).
> > > I've heard this knock off before and let's put it to bed if we 
> can.
> > > 
> > > Did you try zooming the chart?  Both x and y?  Surely the slope 
> of the 
> > > plotted line
> > > changes as you move both the x, abscissa and the ordinate, price, 
> > but the 
> > > calculated
> > > values of the slope from using linregslope does not.  I think of 
> the
> > slope 
> > > as representative of the rate of change of
> > > that price (or other) array.  I don't know what Eckhardt said or 
> in
> > what 
> > > context he said it.   Maybe
> > > he was talking about using pencil and paper.  There the scaling on
> > the chart 
> > > would make a difference.
> > > 
> > > Also, you have to ask yourself,  why would Tomasz have coded a
> > linregslope 
> > > function, or Dimitris Tsokakis and others
> > > used it so frequently in their work on the forum?  In my 
> collection
> > alone of 
> > > valued AFL clips I get 200 hits by many different
> > > users of this board.
> > > 
> > > Best regards
> > > JOE
> > > 
> > > 
> > > ----- Original Message ----- 
> > > From: "sebastiandanconia" <sebastiandanconia@>
> > > To: <amibroker@xxxxxxxxxxxxxxx>
> > > Sent: Thursday, August 24, 2006 9:31 AM
> > > Subject: [amibroker] Re: Never Took Trigonometry
> > > 
> > > 
> > > >I apologize for bursting your bubble, but angles are not going 
> to be a
> > > > consistent measure.  If the scale of the chart changes so does 
> the
> > > > angle, even if the price data and timeframe are precisely the 
> same.
> > > >
> > > > Trendlines that connect highs/lows, however, are consistent 
> regardless
> > > > of scale.  In "The New Market Wizards" mathmatician William 
> Eckhardt
> > > > explains why methods based on angles are fallacious, but 
> methods based
> > > > on trendlines are more legitimate.
> > > >
> > > >
> > > > Luck,
> > > >
> > > > Sebastian
> > > >
> > > > --- In amibroker@xxxxxxxxxxxxxxx, "Charles J. Dudek" <trader@> 
> wrote:
> > > >>
> > > >> I don't know how to convert a slope value (LinRegSlope) to an 
> angle.
> > > >> I took a line from the Woodie's CCI script and converted it, 
> but I
> > > >> don't think it's right.
> > > >>
> > > >> PI = atan(1.00) * 4;
> > > >> angle = round(180 * acos(1/LinRegSlope(C,sp)) / PI);
> > > >>
> > > >> Chuck Dudek
> > > >>
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > > Please note that this group is for discussion between users 
> only.
> > > >
> > > > To get support from AmiBroker please send an e-mail directly to
> > > > SUPPORT {at} amibroker.com
> > > >
> > > > For other support material please check also:
> > > > http://www.amibroker.com/support.html
> > > >
> > > >
> > > > Yahoo! Groups Links
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > >
> >
>