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Roy,
Very valid points and ones I couldn't agree more with! The space
issue is one I've come across several times. I also have another pet
peeve...not being able to use assigned convention names. This one I
understand though and have been able to circumvent by using numbers
for letters...zero for the letter "O".
When I tried the PEMA using the older version of the DLL I had I got
an error message telling me that the DLL did not exist. After the
change it worked great. I just wanted anyone else who ran across the
problem to understand the solution. Reckon we can blame the frenchman
for this one.:-) Then again we'll have to thank him as well. Having
all these DLL's to work with is great!
Preston
--- In equismetastock@xxxxxxxxxxxxxxx, "Roy Larsen" <rlarsen@xxxx>
wrote:
>
> Hi Preston
>
>
> The name of a dll is immaterial as far as I can gather. I use the
ForumDll but have renamed it as "Forum" for my own use. I'd use a
shorter name still if I could think of anything appropriate. Marks
GlobalVar will always be GV in my code, though I also have copies
that only use a single letter for the name.
>
> I think it would be useful if the programmers writing dlls could
grasp the concept that MetaStock has very limited space for
individual formulas. Short names are far preferable to names that
have the appearance of being sentences without spaces.
>
> Renaming Dlls is easy and effective (or renaming a copy perhaps),
but shortening internal function names is not possible for most
users. I notice that ForumDll.dll has a VarSUM function, while
ASI.dll has a SUM function. They're both variable period summations
but one is much more economical with the available space. The
Enhanced System Tester windows only accept a little over 1000
characters, and long formula and function names to nothing to ease
that problem.
>
> I do appreciate the capabilities of some of the new free dlls being
created, but sometimes I think it would be good if the developers
knew more about MetaStock and less about programming. Just my
thoughts.
>
>
> Regards
>
> Roy
>
> ----- Original Message -----
> From: pumrysh
> To: equismetastock@xxxxxxxxxxxxxxx
> Sent: Sunday, November 13, 2005 6:27 AM
> Subject: [EquisMetaStock Group] Re: Pivotal EMA (PEMA)
>
>
> Jose,
>
> Thanks for sharing this...a very interesting concept.
>
> The Forum Dll that you used is a newer version than the one we have
> in our files section. In order to use the one in our files section
> the term "DLL" must be added to the variable ExtFml name...
>
> example: pkEma:=ExtFml("Forum.VarMOV",pkVal,pds,e);
>
> change to: pkEma:=ExtFml("ForumDLL.VarMOV",pkVal,pds,e);
>
> or just go to the Equis Forum site and obtain the newer version.:-)
>
> Preston
>
>
> --- In equismetastock@xxxxxxxxxxxxxxx, "Jose Silva"
> <josesilva22@xxxx> wrote:
> >
> > Below is a relatively new type of Exponential Moving Average
(EMA),
> > based on price, modulated by price peaks/troughs.
> >
> > Basically, the Pivotal EMA (PEMA) generally hugs the price closer
> as
> > it approaches market turning points. This can be useful as a
> possible
> > improvement to the standard EMA in crossover stops.
> >
> > The first PEMA version uses the standard PREV functions to
> construct
> > the EMA. The second plots much faster thanks to the use of
variable-
> > period DLLs.
> >
> >
> > MetaStock -> Tools -> Indicator Builder -> New ->
> > Copy and paste complete formulae between "---8<---" lines.
> >
> > =============
> > EMA - pivotal
> > =============
> > ---8<------------------------------------
> >
> > { Pivotal Exponential Moving Average v1.0 }
> >
> > { PEMA based on trough/peak support/resistance.
> > Options:
> > [1] Composite EMA: (Upper+Lower)/2;
> > [2] Upper EMA band based on peaks;
> > Lower EMA band based on troughs;
> > [3] EMA shifts to Upper/Lower on crossovers }
> >
> > { ©Copyright 2004~2005 Jose Silva.
> > The grant of this license is for personal use
> > only - no resale or repackaging allowed.
> > All code remains the property of Jose Silva.
> > http://www.metastocktools.com }
> >
> > { User inputs }
> > pds:=Input("EMA periods",1,2520,21)/2;
> > plot:=Input("EMA: [1]Composite, [2]Upper+Lower, [3]
> Long/Short",1,3,
> > 1);
> > spread:=Input("Upper/Lower EMA bands shift %",
> > 0,100,2)/200;
> > x:=Input("use: [1]Close, [2]High/Low",1,2,1);
> >
> > { Peak/Troughs }
> > xpk:=If(x=1,C,H);
> > pk:=xpk<Ref(xpk,-1) AND Ref(xpk,-1)>Ref(xpk,-2);
> > pkVal:=ValueWhen(1,pk,Ref(xpk,-1));
> > xtr:=If(x=1,C,L);
> > tr:=xtr>Ref(xtr,-1) AND Ref(xtr,-1)<Ref(xtr,-2);
> > trVal:=ValueWhen(1,tr,Ref(xtr,-1));
> >
> > { Peak-based EMA }
> > pkpds:=If(pds>Cum(pk),Cum(pk),pds);
> > pkpds:=If(pkpds<1,1,pkpds);
> > pkEma:=pkVal*2/(pkpds+1)+PREV*(1-2/(pkpds+1));
> > pkEma:=pkEma*(1+spread);
> >
> > { Trough-based EMA }
> > trpds:=If(pds>Cum(tr),Cum(tr),pds);
> > trpds:=If(trpds<1,1,trpds);
> > trEma:=trVal*2/(trpds+1)+PREV*(1-2/(trpds+1));
> > trEma:=trEma*(1-spread);
> >
> > { Composite EMA }
> > Ema:=(pkEma+trEma)/2;
> > LngShtEma:=If(C>=Ema,trEma,pkEma);
> >
> > { Plot on price chart }
> > If(plot=1,Ema,If(plot=2,trEma,LngShtEma));
> > If(plot=1,Ema,If(plot=2,pkEma,LngShtEma))
> >
> > ---8<------------------------------------
> >
> >
> >
> > ==========================
> > EMA - pivotal, dll version
> > ==========================
> > ---8<------------------------------------
> >
> > { Pivotal Exponential Moving Average v.dll
> > - Plots much faster than PREV-based version.}
> >
> > { PEMA based on trough/peak support/resistance.
> > Options:
> > [1] Composite EMA: (Upper+Lower)/2;
> > [2] Upper EMA band based on peaks;
> > Lower EMA band based on troughs;
> > [3] EMA shifts to Upper/Lower on crossovers }
> >
> > { Forum.dll from http://forum.equis.com
> > or ASI.dll from http://www.thedml.com
> > must be in:
> > ...\MetaStock\External Function DLLs\ folder.}
> >
> > { ©Copyright 2004~2005 Jose Silva.
> > The grant of this license is for personal use
> > only - no resale or repackaging allowed.
> > All code remains the property of Jose Silva.
> > http://www.metastocktools.com }
> >
> > { User inputs }
> > pds:=Input("EMA periods",1,2520,21)/2;
> > plot:=Input("EMA: [1]Composite, [2]Upper+Lower, [3]
> Long/Short",1,3,
> > 1);
> > spread:=Input("Upper/Lower EMA bands shift %",
> > 0,100,2)/200;
> > x:=Input("use: [1]Close, [2]High/Low",1,2,1);
> >
> > { Peak/Troughs }
> > xpk:=If(x=1,C,H);
> > pk:=xpk<Ref(xpk,-1) AND Ref(xpk,-1)>Ref(xpk,-2);
> > pkVal:=ValueWhen(1,pk,Ref(xpk,-1));
> > xtr:=If(x=1,C,L);
> > tr:=xtr>Ref(xtr,-1) AND Ref(xtr,-1)<Ref(xtr,-2);
> > trVal:=ValueWhen(1,tr,Ref(xtr,-1));
> >
> > { Peak-based EMA }
> > pkpds:=If(pds>Cum(pk),Cum(pk),pds);
> > pkpds:=If(pkpds<1,1,pkpds);
> > {pkEma:=ExtFml("Forum.VarMOV",pkVal,pds,e);}
> > pkEma:=ExtFml("ASI.EMA",pkVal,pds);
> > pkEma:=pkEma*(1+spread);
> >
> > { Trough-based EMA }
> > trpds:=If(pds>Cum(tr),Cum(tr),pds);
> > trpds:=If(trpds<1,1,trpds);
> > {trEma:=ExtFml("Forum.VarMOV",trVal,pds,e);}
> > trEma:=ExtFml("ASI.EMA",trVal,pds);
> > trEma:=trEma*(1-spread);
> >
> > { Composite EMA }
> > Ema:=(pkEma+trEma)/2;
> > LngShtEma:=If(C>=Ema,trEma,pkEma);
> >
> > { Plot on price chart }
> > If(plot=1,Ema,If(plot=2,trEma,LngShtEma));
> > If(plot=1,Ema,If(plot=2,pkEma,LngShtEma))
> >
> > ---8<------------------------------------
> >
> >
> > jose '-)
> > http://www.metastocktools.com
> >
>
>
>
>
>
>
>
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