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Hello,
This functionality is described in the guide:
http://www.amibroker.com/guide/w_afledit.html
Hope this helps.
Best regards,
Tomasz Janeczko
amibroker.com
----- Original Message -----
From: "Jayson" <jcasavant@xxxxxxxxxxx>
To: <amibroker@xxxxxxxxxxxxxxx>
Sent: Tuesday, January 27, 2004 1:49 AM
Subject: RE: [amibroker] Re: Slope in radians? question for Math geniuses
> CTRL+Space.... I did not know that!! Very handy....
>
> Regards,
> Jayson
>
>
> -----Original Message-----
> From: Tomasz Janeczko [mailto:amibroker@xxxxxx]
> Sent: Monday, January 26, 2004 2:13 PM
> To: amibroker@xxxxxxxxxxxxxxx
> Subject: Re: [amibroker] Re: Slope in radians? question for Math geniuses
>
>
> Dimitris,
>
> Yes TAN() somehow has been left from docs but it is there.
> There are also ACOS and ASIN (arcus cosine and arcus sine)
> available.
>
> BTW: all functions/variables really available are displayed
> when you just press CTRL+SPACE in the AFL editor.
>
> But of course I will update docs too.
>
> Best regards,
> Tomasz Janeczko
> amibroker.com
> ----- Original Message -----
> From: "DIMITRIS TSOKAKIS" <TSOKAKIS@xxxxxxxxx>
> To: <amibroker@xxxxxxxxxxxxxxx>
> Sent: Monday, January 26, 2004 7:50 AM
> Subject: [amibroker] Re: Slope in radians? question for Math geniuses
>
>
> > 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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