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Need some more help... Ok the correct code below now charts DC just
fine. However I'm having difficulty with this code now:
<begin>
SetBarsRequired(1000000,1000000);
////////Dominant Cycle//////////////
Price=((H+L)/2);
myDC = sbDC(Price);
<end>
I get this error.
<error start>
Unhandled exception
Type: CSysException
Code: c0000005
Description: ACCESS VIOLATION
Address: e4aca6
Line 4, Column 19:
SetBarsRequired(1000000,1000000);
////////Dominant Cycle//////////////
Price=((H+L)/2);
myDC = sbDC(Price);
------------------^
<error end>
Stephane can you please help. thanks once again.
--- In amibroker@xxxxxxxxxxxxxxx, "Christoper" <turkey@xxxx> wrote:
>
> ACK! I knew that... I have it in my other AFL code, but I don't
know
> why I didn't include it again.
>
> Thanks,
> Stephane
>
> --- In amibroker@xxxxxxxxxxxxxxx, "s.carrasset" <s.carrasset@xxxx>
> wrote:
> > Hello,
> >
> > because of quick AFL on, you must add before the dll
> > setbarsrequired
> > ex:
> > SetBarsRequired(10000,10000);
> > price = (H + L) / 2;
> > Plot(sbDC(price),"DC",4,1);
> >
> > and it must be fine
> >
> > stephane
> > Turkey wrote:
> >
> > > Stephane,
> > >
> > > I'm having trouble with the Dominant Cycle function. Basically
> if I use
> > > your example in the help file:
> > > price = (H + L) / 2;
> > > Plot(sbDC(price),"DC",4,1);
> > >
> > > I observe two issues:
> > > (a) I'm getting real wacky results. Negative numbers, really
low
> numbers
> > > (0.45) And when I slide the horizontal bar backwards or
forwards
> during
> > > time, sbDC doesn't seem to 'refresh'. The graph "freeezes"
while
> all
> > > other
> > > charts move through time normally. I've tried this for many
> different
> > > symbols, and after checking data. However sometimes...
> > > (b) If I click on different days, sbDC seems to "recalculate"
and
> refresh,
> > > sometimes to (i) what I would consider correct values or (ii)
to
> another
> > > wacky state.
> > >
> > > This happens with the exact example above. I'm using EOD data,
> with data
> > > from 1/1/200o through today. With a few hundred symbols.
> > >
> > > Help will be appreciated.
> > >
> > > Thanks,
> > > Chris
> > >
> > > -----Original Message-----
> > > From: s.carrasset [mailto:s.carrasset@x...]
> > > Sent: Thursday, September 30, 2004 6:03 AM
> > > To: amibroker@xxxxxxxxxxxxxxx
> > > Subject: Re: [amibroker] Re: Ehlers.dll
> > >
> > > yes,
> > >
> > > you can use only indicators.dll and remove ehlers.dll of plugin
> folder, as
> > > all the codes of ehlers written by stefan sbondorovith if i
> remember
> > > correctly his name is included in indicators.dll for the source
> code,
> > > it is
> > > written in c++ and it is a translation of EL code of
tradestation
> > >
> > > for ex the sinewave is below but you can't use directly in
> amibroker, but
> > > only in a compiler via a plugin
> > >
> > > stephane
> > >
> > > AmiVar sbSine( int NumArgs, AmiVar *ArgsTable ) {
> > > int i, j,count;
> > > int nSize = gSite.GetArraySize();
> > >
> > > AmiVar SineWave = gSite.AllocArrayResult();
> > > AmiVar LeadSine = gSite.AllocArrayResult();
> > > AmiVar DCPhase = gSite.AllocArrayResult();
> > >
> > > double Qmult = 0.338;
> > > double Imult = 0.635;
> > >
> > > double* InPhase = new double[nSize];
> > > double* Phase = new double[nSize];
> > > double* DeltaPhase = new double[nSize];
> > > double* InstPeriod = new double[nSize];
> > > double* Period = new double[nSize];
> > > double* Quadrature = new double[nSize];
> > > double* Value3 = new double[nSize];
> > > double* Value5 = new double[nSize];
> > >
> > > float *Price = ArgsTable[ 0 ].array;
> > > j = SkipEmptyValues( nSize, Price, SineWave.array );
> > >
> > > for(i = j; i < 50; i++)
> > > {
> > > InPhase[i] = 0.0;
> > > Phase[i] = 0.0;
> > > DeltaPhase[i] = 0.0;
> > > InstPeriod[i] = 0.0;
> > > Period[i] = 0;
> > > Quadrature[i] = 0.0;
> > > Value3[i] = 0.0;
> > > Value5[i] = 0.0;
> > > SineWave.array[i] = LeadSine.array[i]= EMPTY_VAL;
> > > }
> > >
> > > for( i = j + 6; i < nSize; i++ )
> > > {
> > >
> > > // Detrend Price
> > > Value3[i] = Price[i] - Price[i-7];
> > >
> > > // Compute Inphase and Quadrature
> > > InPhase[i] = 1.25 * (Value3[i-4] - Imult * Value3[i-2])
+
> Imult
> > > * InPhase[i-3];
> > > Quadrature[i] = Value3[i-2] - Qmult * Value3[i] + Qmult
*
> > > Quadrature[i-2];
> > >
> > >
> > > //Use ArcTangent to compute the current phase
> > > if( dabs(InPhase[i] +InPhase[i-1]) > 0)
> > > Phase[i] = ArcTangent( dabs((Quadrature[i]
+Quadrature
> [i-1])
> > > / (InPhase[i]+InPhase[i-1])) );
> > >
> > >
> > > //Resolve the ArcTangent ambiguity
> > > if( (InPhase[i] < 0 ) && (Quadrature[i] > 0))
> > > Phase[i] = 180 - Phase[i];
> > > if( (InPhase[i] < 0) && (Quadrature[i] < 0))
> > > Phase[i] = 180 + Phase[i];
> > > if( (InPhase[i] > 0) && (Quadrature[i] < 0))
> > > Phase[i] = 360 - Phase[i];
> > >
> > > //Compute a differential phase, resolve phase
wraparound,
> and
> > > limit delta phase errors
> > > DeltaPhase[i] = Phase[i-1] - Phase[i];
> > > if( (Phase[i-1] < 90) && (Phase[i] > 270))
> > > DeltaPhase[i] = 360 + Phase[i-1] - Phase[i];
> > > if( (DeltaPhase[i] < 1))
> > > DeltaPhase[i] = 1;
> > > if( DeltaPhase[i] > 60)
> > > DeltaPhase[i] = 60;
> > > }
> > >
> > > for( i = j + 50; i < nSize; i++ )
> > > {
> > >
> > > //Sum DeltaPhases to reach 360 degrees. The sum is the
> > > instantaneous period.
> > > double Value4 = 0.0;
> > > InstPeriod[i] = 0.0;
> > > for( count = 0; count < 50; count++)
> > > {
> > > Value4 = Value4 + DeltaPhase[i-count];
> > > if( (Value4 > 360.0) && (InstPeriod[i] == 0.0))
> > > InstPeriod[i] = (double)count;
> > > }
> > >
> > > //Resolve Instantaneous Period errors and smooth}
> > > if( InstPeriod[i] == 0.0)
> > > InstPeriod[i] = InstPeriod[i-1];
> > > Value5[i] = 0.25 * InstPeriod[i] + 0.75 * Period[i-1];
> > >
> > > //Compute Dominant Cycle Phase, Sine of the Phase Angle
> and
> > > Leadsine}
> > > Period[i] = floor(Value5[i]);
> > > double RealPart = 0.0;
> > > double ImagPart = 0.0;
> > >
> > > for( count = 0; count < Period[i]; count++) {
> > > RealPart = RealPart + Sine( 360 * count / Period
[i] )
> *
> > > Price[i-count];
> > > ImagPart = ImagPart + Cosine( 360 * count / Period
> [i]) *
> > > Price[i-count];
> > > }
> > >
> > > if( dabs(ImagPart) > 0.001)
> > > DCPhase.array[i] = (float)ArcTangent( RealPart /
> ImagPart );
> > >
> > > if( dabs(ImagPart) <= 0.001)
> > > {
> > > int Sign;
> > > if( RealPart < 0)
> > > Sign = -1;
> > > else
> > > Sign = 1;
> > > DCPhase.array[i] = (float) (90 * Sign);
> > > }
> > >
> > > DCPhase.array[i] = DCPhase.array[i] + 90;
> > > if( ImagPart < 0 )
> > > DCPhase.array[i] = DCPhase.array[i] + 180;
> > > if( DCPhase.array[i] > 315)
> > > DCPhase.array[i] = DCPhase.array[i] - 360;
> > >
> > >
> > > SineWave.array[ i ] = (float)(Sine( DCPhase.array[i] ));
> > > LeadSine.array[i] = (float)(Sine( DCPhase.array[i] +
> 45 ));
> > >
> > > }
> > > delete [] InPhase;
> > > delete [] Phase;
> > > delete [] DeltaPhase;
> > > delete [] InstPeriod;
> > > delete [] Period;
> > > delete [] Quadrature;
> > > delete [] Value3;
> > > delete [] Value5;
> > >
> > > gSite.SetVariable( "sbDCPhase", DCPhase );
> > > gSite.SetVariable( "sbLeadSine", LeadSine );
> > > return SineWave;
> > > }
> > > for ex
> > >
> > > > Stephane,
> > > >
> > > > Thanks much for you reply, especially since the author is no
> longer
> > > > here. I will make sure that my code contains the
> SetbarsRequired
> > > > line and test.
> > > >
> > > > So can i assume that I can get rid of Ehlers.dll and utilize
> your
> > > > Indicators.dll instead?
> > > >
> > > > In addition, would you be willing to share the source code?
> Want to
> > > > get tips on translating easylanguage to afl.
> > > >
> > > > Chris
> > > >
> > > > --- In amibroker@xxxxxxxxxxxxxxx, "s.carrasset"
> <s.carrasset@xxxx>
> > > > wrote:
> > > > > the man who has written the dll is not still active , but
he
> gave
> > > > me its
> > > > > sorce code and I have included it in indicators dll.
> > > > > I am remembering I have modified some code because of crash.
> > > > > so you must load indicators.dll and perhaps add
> > > > > SetBarsRequired(10000,10000); at the begin of the code like
> > > > > SetBarsRequired(10000,10000);
> > > > >
> > > > > Plot(sbDC(scMp()),"CGO",colorRed,1);
> > > > >
> > > > > stephane
> > > > >
> > > > >
> > > > >
> > > > > Christoper wrote:
> > > > >
> > > > > > Hi,
> > > > > >
> > > > > > Is the author for Ehlers.dll still around? I'm having
some
> > > > trouble
> > > > > > with it, Amibroker is crashing every once in a while when
> I'm
> > > > running
> > > > > > a scan.
> > > > > >
> > > > > > Can I get the formula for "Dominant Cycle"?
> > > > > >
> > > > > > Thanks,
> > > > > > Chris
> > > > > >
> > > > > >
> > > > > >
> > > > > > Check AmiBroker web page at:
> > > > > > http://www.amibroker.com/
> > > > > >
> > > > > > Check group FAQ at:
> > > > > >
http://groups.yahoo.com/group/amibroker/files/groupfaq.html
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