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Hi Jayson
I write to Colin Twiggs for clarification of V+(Ref(V,-1)*0)
Here is his response:
The first day of TRH is calculated on day #2:
TRH:=Max(Ref(C,-1),H);
The purpose of +(Ref(V,-1)*0) is to bring volume into line with the
above; so that the first day of volume used is day #2, and not day
#1, in the last line of the calcuation:
If(WV=0,0,Wilders(ADV,periods)/Wilders(WV,periods))
Cheers
Anthony
--- In amibroker@xxxxxxxxxxxxxxx, "Jayson" <jcasavant@xxxx> wrote:
> Anthony,
> I noticed no difference on the chart I was working on but you make
a good
> point. A particularly good point for use on interday charts. Thanks
for the
> heads up.......
>
> Jayson
> -----Original Message-----
> From: Anthony [mailto:axon50@x...]
> Sent: Thursday, March 06, 2003 3:55 PM
> To: amibroker@xxxxxxxxxxxxxxx
> Subject: [amibroker] Re: Twiggs Money Flow formula
>
>
> Hi Jayson,
> I was only joking with the "rub it in" comment. I appreciate all
your
> input. The histogram is a good idea, it makes it easy to read.
>
> One thing though, I have found that keeping the IIf statement in the
> line ADV=((C-TRL)-(TRH-C))/(IIf(TR==0,999999,TR))*V; makes a
> difference when there is a huge swing in volume but no change in
> price. I think that was part of Colin Twiggs intention to filter out
> such swings.
>
> So the code I will use is:
> pds=Param("TMF periods",21,1,100,1);
> TRH=Max(Ref(C,-1),H);
> TRL=Min(Ref(C,-1),L);
> TR=ATR(1);
> ADV=((C-TRL)-(TRH-C))/(IIf(TR==0,999999,TR))*V;
> sadv=Wilders(Adv,pds);
> svol=Wilders(V,pds);
> TMF=sadv/svol;
> _N( mstr = "("+WriteVal(pds,1.0) + ")" );
> Plot(tmf,"Twiggs Money Flow"+mstr,IIf(tmf>0,colorGreen,colorRed),2);
> GraphXSpace=5;
>
> Best regards
> Anthony
>
>
> --- In amibroker@xxxxxxxxxxxxxxx, "Jayson" <jcasavant@xxxx> wrote:
> > Anthony,
> > I was not trying to rub it in at all. As a past MS user I had the
> same
> > problem understanding = and ==. Any way, thanks for the link to
> the paper.
> > I tried to follow the logic he explained in the the construction
> and found a
> > different approach for translation in AB......
> >
> >
> > pds=Param("TMF periods",21,1,100,1);
> > TRH=Max(Ref(C,-1),H);
> > TRL=Min(Ref(C,-1),L);
> > tr=ATR(1);
> > ADV=((C-TRL)-(TRH-C))/tr*V;
> > sadv=Wilders(Adv,pds);
> > svol=Wilders(V,pds);
> > TMF=sadv/svol;
> > Plot(tmf,"Twiggs Money Flow",IIf(tmf>0,colorGreen,colorRed),2);
> > GraphXSpace=5;
> >
> >
> > The resulting value is the same as the MS translation however it
> does not
> > use the WV calculation that confused me and utilizes the built in
> ATR
> > function. You might also enjoy the histogram variation as it
clearly
> > demonstrates accumulation versus distribution.
> >
> >
> > Jayson
> > -----Original Message-----
> > From: Anthony [mailto:axon50@x...]
> > Sent: Thursday, March 06, 2003 7:34 AM
> > To: amibroker@xxxxxxxxxxxxxxx
> > Subject: [amibroker] Re: Twiggs Money Flow formula
> >
> >
> > Hi Jayson,
> > No need to rub it in. Anthony F. has already pointed out my
> > stupidity :(
> >
> > Seriously though, there was a huge lag yesterday before posts were
> > coming up so I guess you did not see my earlier admission of
> > dumbness.
> >
> > I remember all sorts of variations like .EQ. for "equals" and I
> > always used to read := as "set to equal"
> > Very confusing for an amateur. I have never used Metastock but its
> > combination for "equals" seems easier to grasp.
> >
> > Back to the topic. The formula now works and for those unfamiliar
> > with it and would like to read more, check out
> > http://www.incrediblecharts.com/technical/twiggs_money_flow.htm
> >
> > Best regards,
> > Anthony
> >
> > --- In amibroker@xxxxxxxxxxxxxxx, "Jayson" <jcasavant@xxxx> wrote:
> > > Anthony,
> > > I also do not understand the logic behind line 6 however, I
think
> > the reason
> > > your code is failing is due to your use of the equal sign. When
> > you set a
> > > variable you use, = as in x=c+1;
> > > However when you are trying to use mathematical equal within the
> > code you
> > > must use == as in c==42
> > >
> > > No Symbol Meaning
> > > 1 ^ Exponentiation
> > > 2 - Negation - Unary minus
> > > 3 * Multiplication
> > > 4 / Division
> > > 5 + Addition
> > > 6 - Subtraction
> > > 7 < Less than
> > > 8 > Greater than
> > > 9 <= Less than or equal to
> > > 10 >= Greater than or equal to
> > > 11 == Equal to
> > > 12 != Not equal to
> > > 13 & Bit-wise "And" (AFL 2.1+)
> > > 14 | Bit-wise "Or" (AFL 2.1+)
> > > 15 NOT Logical "Not"
> > > 16 AND Logical "And"
> > > 17 OR Logical "Or"
> > > 18 = Variable assignment operator
> > >
> > >
> > >
> > > try....
> > >
> > >
> > > periods=Param("TMF periods",21,1,100,1);
> > > TRH=Max(Ref(C,-1),H);
> > > TRL=Min(Ref(C,-1),L);
> > > TR=TRH-TRL;
> > > ADV=((C-TRL)-(TRH-C))/(IIf(TR==0,999999,TR))*V;
> > > WV=V+(Ref(Volume,-1)*0);
> > > TMF=IIf(WV==0,0,Wilders(ADV,periods)/Wilders(WV,periods));
> > >
> > > Plot(tmf,"",colorRed,1);
> > >
> > >
> > > Jayson
> > > -----Original Message-----
> > > From: Anthony [mailto:axon50@x...]
> > > Sent: Wednesday, March 05, 2003 8:32 PM
> > > To: amibroker@xxxxxxxxxxxxxxx
> > > Subject: [amibroker] Twiggs Money Flow formula
> > >
> > >
> > > Hi all
> > > I have seen people using this and became curious enough to check
> it
> > > out. It is based on the theme of the Chaiken Money Flow Index
but
> is
> > > designed to better handle price gaps and volume spikes. Colin
> Twiggs
> > > is behind it.
> > >
> > > He has given a Metastock formula for it:
> > > periods:=Input("TMF periods",1,100,21);
> > > TRH:=Max(Ref(C,-1),H);
> > > TRL:=Min(Ref(C,-1),L);
> > > TR:=TRH-TRL;
> > > ADV:=((C-TRL)-(TRH-C))/If(TR=0,999999,TR)*V;
> > > WV:=V+(Ref(V,-1)*0);
> > > If(WV=0,0,Wilders(ADV,periods)/Wilders(WV,periods))
> > >
> > > Now even though I cannot work out what the sixth line is
supposed
> to
> > > represent you would think that this was easy enough for me to
> > > translate but whatever I have done is wrong:
> > > periods=Param("TMF periods",21,1,100,1);
> > > TRH=Max(Ref(C,-1),H);
> > > TRL=Min(Ref(C,-1),L);
> > > TR=TRH-TRL;
> > > ADV=((C-TRL)-(TRH-C))/(IIf(TR=0,999999,TR))*V;
> > > WV=V+(Ref(Volume,-1)*0);
> > > TMF=IIf(WV=0,0,Wilders(ADV,periods)/Wilders(WV,periods));
> > >
> > > Any thoughts appreciated
> > >
> > > Regards
> > > Anthony
> > >
> > >
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> > >
> > >
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