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Graham,
I am trying
to determine the angle of the Linereg and Ema lines at a particular point in
time. For instance, if you draw a 90 degree horizontal and vertical line and the
Linereg comes through the intersection of that 90 degree, what angle is the
linereg relative to the 90 degree base. If I could include an image I could
probably express it a little better.
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/ need the angle of this.
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Thank
you
Tom
In what way are you getting wrong numbers?
Are
you wanting the angle of the linreg line?
The results look ok to me after
plotting.
You have to remember that slope is an arbitrary number
in charts. You
must calculate it to suit the scaling factors that affect it
if you
want to gtet the answer similar to what you see on the screen.
The
screen drawn angle will change as you zoom in/out of the chart and
may
possibly be the same as calculated figure if yuo get lucky.
I have
stated this before some time ago, angle means absolutely
nothing by itself as
you have no reference in which to base it.
On 7/21/05, mymail
<grpmail@xxxxxxxxxxxxxxxx> wrote:
> Graham,
>
> I
read the thread as it went on. Unfortunately, I am doing something
wrong,
> as I am not getting the correct numbers.
>
>
Here is my code snippet. Did I miss something obvious?
>
>
>
> LSMA = LinearReg(C, 25 );
>
> EMA34 = EMA(C,34);
>
> a=atan(LinRegSlope(LSMA,3));
>
>
b=atan(LinRegSlope(EMA34,3));
>
> RAD_TO_DEG = 180/3.1415926; //
radians to degrees
>
> Angle = RAD_TO_DEG * a;
>
>
Angle1 = RAD_TO_DEG * b;
>
> "LSMA ANGLE IS: "+ WriteVal(Angle);
>
> "EMA34 ANGLE IS: "+ WriteVal(Angle1);
>
>
-----Original Message-----
> From: amibroker@xxxxxxxxxxxxxxx
[mailto:amibroker@xxxxxxxxxxxxxxx]On Behalf
> Of Graham
> Sent:
Wednesday, July 20, 2005 5:44 PM
> To: amibroker@xxxxxxxxxxxxxxx
>
Subject: Re: [amibroker] Some Math Help Please
>
> just had that
discussion here this week re slopes calculation
>
> slope = (value2
- value1) / (bar2 - bar1);
> angle_rad = atan(slope);//radians
>
angle_deg = angle_rad * 180/3.1416;//degrees
>
> On 7/21/05, mymail
<grpmail@xxxxxxxxxxxxxxxx> wrote:
> > Thank you Joe, good advice.
Unfortunately, I was trying to get Math help
> > rather than AFL help.
It has been so long that I studied Trig that I
> forgot
> > how
to calculate the angle of a line.
> > So for instance, how would I
calculate the angle in degrees of a line such
> > as a moving
average?
> >
> > thank you
> > Tom
>
>
> > -----Original Message-----
> > From:
amibroker@xxxxxxxxxxxxxxx [mailto:amibroker@xxxxxxxxxxxxxxx]On
>
Behalf
> > Of Joe Landry
> > Sent: Monday, July 18, 2005 8:27
AM
> > To: amibroker@xxxxxxxxxxxxxxx
> > Subject: Re:
[amibroker] Some Math Help Please
> >
> >
> >
> > AN EXAMPLE:
> >
> > I don't know why your
codes doesn't work but building on what Graham wrote
> > here's a an
example (since I had to fight through this at one time)
> >
>
> This is a snippet from one of my indicators is based on Dimitris's
work
> > ....BB is the slope of the line at the last bar. I write
it out on the
> > chart
> >
> > as follows
>
>
> > Title= FullName()+" "+ Date()+"\n"+ "Slope of Regression
Line(X1000) = "+
> > WriteVal(10000*bb);
> >
> >
If you're new to this script, I'd recommend you take up one of the
most
> > productive practices I've found and
> >
> >
adapt for your work. Find an information database(I use Infoselect)
for
> > your system and clip every interesting indicator or algorithm
you
> >
> > see used in this forum for your own
library. This of course would be in
> > addition to what Graham
recommended 2-3 weeks back...going through each
> > function and using
the function in a test program .
> >
> > Searching the
archives 2-3 years back for Graham's and Dimitris Tsokakis'
> > work
would also pay off.
> >
> > Best regards
> >
> > JOE
> >
> >
> >
>
>
> >
> > // Plot the slope of the relative
strength line
> >
> > //
> >
> > Daysback
= 126; // 6 months
> >
> > x = Cum(1); // the X axis,
abscissa
> >
> > LastX = LastValue(X);
> >
>
> C1 = Issue2Rel; // the Y axis, the ordinate
> >
> > aa =
LastValue( LinRegIntercept( C1, Daysback) );
> >
> > bb =
LastValue( LinRegSlope( C1, Daysback ) );
> >
> > yy = Aa +
bb * ( x - (Lastx - DaysBack) ); // the algebraic equation for a
> >
straight line
> >
> > yy=IIf( x >= (lastx - Daysback), yy,
-1e10 ); // roll the plot forward and
> > show only the 6
months
> >
> > Plot( yy, "LinRegression Line",
colorDarkRed,styleThick);
> >
> > UpperSEBand = YY +
2*StdErr(Issue2Rel,126);
> >
> > LowerSEBand = YY -
2*StdErr(Issue2Rel,126);
> >
> > Plot(UpperSEBand,"Upper 2
Sigma",colorBlue,styleLine);
> >
> > Plot(LowerSEband,"Lower
2 Sigma",colorBlue,styleLine);
> > ----- Original Message -----
> > From: valrox1
> > To: amibroker@xxxxxxxxxxxxxxx
>
> Sent: Monday, July 18, 2005 12:36 AM
> > Subject: [amibroker] Some
Math Help Please
> >
> > I am trying to calculate the angle
of a plotted slope in degrees.
> > Below is the code I thought would
work, but doesn't.
> >
> > Any thoughts?
> >
> > Thank you
> > Tom
> >
> > LSMA =
LinearReg(C, 25 );
> >
> > a=atan(LSMA);
> >
> > RAD_TO_DEG = 180/3.1415926; // radians to degrees
> >
> > Angle = RAD_TO_DEG * a; //
> >
> > Plot(
Angle, "LSMA", colorYellow, styleThick);
> >
> >
>
> Title = "Angle=" + Angle +
EncodeColor(colorWhite) + " " + Date
> > ();
> >
> >
> >
> >
> >
> >
> > 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
>
>
> >
> >
> >
> >
> >
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> >
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> >
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> >
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> >
>
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> > ________________________________
> >
>
>
> --
> Cheers
> Graham
> http://e-wire.net.au/~eb_kavan/
>
>
> 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
>
>
>
>
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>
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>
> Visit your group "amibroker" on the
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________________________________
>
--
Cheers
Graham
http://e-wire.net.au/~eb_kavan/
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
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