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The function appears at
http://www.amibroker.com/guide/afl/afl_view.php?id=253
It means, perhaps, we may use it.
Dimitris Tsokakis
--- In amibroker@xxxxxxxxxxxxxxx, <stewartgotlieb@xxxx> wrote:
> Dimitris,
>
> I guess it's undocumented.
>
> Stewart
> ----- Original Message -----
> From: DIMITRIS TSOKAKIS
> To: amibroker@xxxxxxxxxxxxxxx
> Sent: Sunday, January 25, 2004 11:24 PM
> Subject: [amibroker] Re: Slope in radians? question for Math
geniuses
>
>
> Stewart,
> There was no such function in 4.50 User's guide.
> Do I miss something ?
> Dimitris Tsokakis
> --- In amibroker@xxxxxxxxxxxxxxx, <stewartgotlieb@xxxx> wrote:
> > DT,
> >
> > AFL does have tangent - it's TAN().
> >
> > Regards,
> >
> > Stewart
> > ----- Original Message -----
> > From: DIMITRIS TSOKAKIS
> > To: amibroker@xxxxxxxxxxxxxxx
> > Sent: Sunday, January 25, 2004 3:45 PM
> > Subject: [amibroker] Re: Slope in radians? question for Math
> geniuses
> >
> >
> > Anthony,
> > For any point , D bars before the end of an array y, we may
draw
> an
> > automatic line with ANGLEdeg [in degrees, positive or
negative.
> > Avoid +-90, the tan is not defined there.
> > Since we do not have in AFL a tangent function [as we miss
pi],
> we
> > should use their equivalents
> >
> > D=50;ANGLEdeg=Param("a",45,-89,89,1);
> > x=Cum(1);L1=LastValue(x);
> > y=RSI();
> > x0=x[L1-D];
> > Y0=Y[L1-D];
> > pi=4*atan(1);ANGLErad=pi*ANGLEdeg/180;
> > z=y0+(sin(ANGLErad)/cos(ANGLErad))*(x-x0);
> > Plot(y,"",1,1);
> > Plot(IIf(x>=x0,z,-1e10),"",colorRed,1);
> > Plot(IIf(x>=x0,y0,-1e10),"",colorRed,1);
> > PlotShapes(shapeUpTriangle*(x==x0),colorYellow);
> > Title="ANGLEdeg="+WriteVal(ANGLEdeg,1.0);
> >
> > Dimitris Tsokakis
> >
> >
> > --- In amibroker@xxxxxxxxxxxxxxx, "Anthony Faragasso"
> <ajf1111@xxxx>
> > wrote:
> > > Dimitri,
> > >
> > > Would it be possible to work at this from a different
> > way....something like:
> > >
> > > Angle=Param("Angle",45,10,90,1);
> > >
> > > Select an angle and then have the line drawn.
> > >
> > > Anthony
> > > ----- Original Message -----
> > > From: "DIMITRIS TSOKAKIS" <TSOKAKIS@xxxx>
> > > To: <amibroker@xxxxxxxxxxxxxxx>
> > > Sent: Sunday, January 25, 2004 5:59 AM
> > > Subject: [amibroker] Re: Slope in radians? question for
Math
> > geniuses
> > >
> > >
> > > > Suppose you START 50 bars before the last bar and the END
is
> 20
> > bars
> > > > ago.
> > > > For any ARRAY, the angle is
> > > >
> > > > START=50;END=30;
> > > > ARRAY=RSI();
> > > > L1=LastValue(Cum(1));
> > > > X0=L1-START;X1=L1-END;
> > > > Y0=ARRAY[X0];Y1=ARRAY[X1];
> > > > Plot(ARRAY,"",1,1);
> > > > Plot(LineArray(X0,Y0,X1,Y1),"",4,1);
> > > > Plot(LineArray(X0,Y0,X1,Y0),"",4,1);
> > > > ANGLE=atan((Y1-Y0)/(X1-X0));
> > > > Title="ANGLE="+WriteVal(ANGLE)+" RADS"+", ["+WriteVal
> > (45*ANGLE/atan
> > > > (1),1.0)+" DEGS]";
> > > >
> > > > Replace the ARRAY with yours and see the result in RADS
[and
> > DEGS].
> > > > Note that the calculation does not match with the visual
> angle,
> > which
> > > > depends on the applied zoom and the dimensions of your
graph.
> > > > Dimitris Tsokakis
> > > > --- In amibroker@xxxxxxxxxxxxxxx, "epintoem"
<epintoem@xxxx>
> > wrote:
> > > > > Given two points.... how could I calculate the slope of
the
> line
> > > > > connecting those two points....We have an atan function
but
> I
> > have
> > > > no
> > > > > clue as to how to use it.
> > > > >
> > > > > Thanks for your help
> > > >
> > > >
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