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Roy your explanation was prefect thank you.
KS.
--- In equismetastock@xxxxxxxxxxxxxxx, "Roy Larsen" <rlarsen@xxxx>
wrote:
> KS
>
>
> I can't offer too much help on the "two pole Butterworth"
indicator as the underlying concepts and maths are unknown to me.
I'd need to read up on it and understand how it's supposed to work
before I could offer any suggestions. My current schedule doesn't
have a vacant slot.
>
> PREV is quite a different beast to Ref(expression,-1). In earlier
versions of MetaStock a self-referencing variable name inside a Ref
() function would result in an error. For some reason version 9
doesn't seem to (always?) create an error, but for all that MS still
can't process an expression in Ref() unless it's been previously
defined. Typically a variable must be defined in MS BEFORE it can
then be used by another variable. The only exception to this rule is
PREV, when PREV specifically means "the previous bars value of the
variable currently being defined". Every variable must be defined
for every bar - every formula is processed sequentially from the
first to the last variable on bar one, and then the process is
repeated for the next bar, and so on. PREV allows MS to "access" a
variable that has not yet been fully defined in the processing
sequence for the current (or any) bar. Ref(), on the other hand, can
only access variables that have already been defined prior to the
current variable definition.
>
> Now that you're thoroughly confused, if you want to refer to the
currently being defined variable's value from two bars ago, it's
legitimate to use Ref(PREV,-1), as opposed to using PREV for the
currently being defined variable's value from one bar ago.
>
> PREV is a concept that takes a little time to get one's head
around, but it's not rocket science.
>
> Kind regards
>
> Roy
>
>
> ----- Original Message -----
> From: formulaprimer
> To: equismetastock@xxxxxxxxxxxxxxx
> Sent: Thursday, August 04, 2005 2:46 AM
> Subject: [EquisMetaStock Group] Re: FUTURES MARKETS
>
>
> Roy can you help me with questions below. thanks you.
> KS.
>
>
>
> <formulaprimer@xxxx> wrote:
> >
> > Also Jose can you take a look at my posts for Two Pole
Butterworth
> > Filters and the Three pole Butterworth Filter and also why does
MS
> > use a function like example:
> > smooth:= 2*alpha*ref(smooth,-1) * ref(smooth,-2);
> > I realize the first part ref(smooth,-1) can me substituted with
> > the PREV function but what about ref(smooth,-2)?
> > Thanks KS.
>
> --- In equismetastock@xxxxxxxxxxxxxxx, "Jose Silva"
> <josesilva22@xxxx> wrote:
> > KS, I don't have MetaStock here with me on holidays, so I can't
be
> > of much help. However, it's my gut feeling that anything that
> > strays away from basic price action, such as exotic mathematical
> > formulae, may have little relevance to the real markets.
> >
> >
> > > I realize the first part ref(smooth,-1) can me substituted with
> > > the PREV function
> >
> > Ref(DataArray,-periods) is not the same as the PREV function.
> > Perhaps Roy can explain this further, as he has written
something
> > about this in past issues of MSTT.
> >
> >
> > jose '-)
> > http://metastocktools.com
> >
> >
> >
> >
> > --- In equismetastock@xxxxxxxxxxxxxxx, "formulaprimer"
> > <formulaprimer@xxxx> wrote:
> > >
> > > Also Jose can you take a look at my posts for Two Pole
> Butterworth
> > > Filters and the Three pole Butterworth Filter and also why
does
> MS
> > > use a function like example:
> > > smooth:= 2*alpha*ref(smooth,-1) * ref(smooth,-2);
> > > I realize the first part ref(smooth,-1) can me substituted with
> > > the PREV function but what about ref(smooth,-2)?
> > > Thanks KS.
> > >
> > >
> > > --- In equismetastock@xxxxxxxxxxxxxxx, "Hani"
<elmagd2000@xxxx>
> > > wrote:
> > > Hi Jose, I totally agree that trading as a job is tougher than
> > > most think of it. I read advice by a well known psyche. about
a
> > > must of at least 30 days yearly completely out of any trading
> > > activity.
> > > I hope to you good luck with future projects and we are
missing
> > > your valuable participation in group.
> > > All the best, Hani :)
> > >
> > >
> > > ----- Original Message -----
> > > From: "Jose Silva" <josesilva22@xxxx>
> > > To: <equismetastock@xxxxxxxxxxxxxxx>
> > > Sent: Tuesday, August 02, 2005 3:53 AM
> > > Subject: [EquisMetaStock Group] Re: FUTURES MARKETS
> > >
> > >
> > > Hani, after five years of almost continuous backbreaking stock-
> > > trading,I've taken a break from for a couple of reasons:
> > >
> > > 1) It was taking far too much of my time and energy, for what I
> > > considered volatile returns (85% profit in 2003, only 8% last
> > > year) and a poor time-to-reward ratio - life is too short;
> > >
> > > 2) I've decided to take some time out, and step back to take a
> > > wider look at the markets, and try and see the forest rather
than
> > > the trees;
> > >
> > > 3) I've also decided to concentrate on liquid commodities
rather
> > > than stocks, with the view to trade in a small fund next year;
> > >
> > > 4) I need additional spare time to work on some promising
trading
> > > tools, as well as continue my favourite pastime - coding in
> > > MetaStock. ;)
> > >
> > >
> > > jose '-)
> > > http://metastocktools.com
> > >
> > >
> > >
> > > --- In equismetastock@xxxxxxxxxxxxxxx, "Hani" <elmagd2000@xxxx>
> > > wrote:
> > >
> > > I hope it is ok with you Jose. Why did you stop trading such
> > > period?
> > > I know that businessmen usually have no time to trade and hire
> > > traders to do the job for them :))
> > > Good luck friend
> > >
> > > Hani :)
> > >
> > >
> > > ----- Original Message -----
> > > From: "Jose Silva" <josesilva22@xxxx>
> > > To: <equismetastock@xxxxxxxxxxxxxxx>
> > > Sent: Monday, August 01, 2005 6:06 AM
> > > Subject: [EquisMetaStock Group] Re: FUTURES MARKETS
> > >
> > >
> > >> What are the indicators or system do you use to trade the
> > >> futures markets like grains etc???
> > >
> > > Perhaps I'm not the right person to ask this question - I'm
> > > taking a break from trading, but hope to be back trading
futures
> > > sometime in early 2006.
> > >
> > > In past trading, I have usually made my own indicators and have
> > > applied my own system logic, information which I don't usually
> > > disclose.
> > > http://metastocktools.com/Pegasus/Pegasys.htm
> > >
> > >
> > > KS, your question assumes that indicators and systems is what
> > > trading is all about.
> > >
> > > Now, imagine asking an architect/builder which tools (hammer,
> > > saw, nails, cement type, equipment) and designs he uses for
his
> > > building, with the view to replicate his work...
> > >
> > > Or how about asking a doctor which tools of the trade (drugs &
> > > equipment) he uses for treating his patients, with the view to
> > > self-medicate?
> > >
> > > Trading tools are just like any other tools - used in the
> > > correct manner by proficient traders, they are an extension of
> the
> > > trader and his views.
> > >
> > > In my experience, successful trading can approximately be
> > > broken into:
> > >
> > > # 20% being system logic and T/A (indicators, software, etc);
> > > # 40% being suitable state of mind and discipline;
> > > # 40% correct view/understanding of the market environment and
> > > its current conditions;
> > > # sufficient, non-essential trading funds.
> > >
> > >
> > > I remember back to the 70's & 80's when the general belief was
> > > that if something was designed by a computer, then the product
> > > must be infallible. Fortunately, this general view or paradigm
> > > has now changed, and computers are now viewed only as useful
> > > tools, and not some sort of divine intelligence.
> > >
> > > We are now in the new millennium - let's begin to view
> > > Technical Analysis as a potentially-useful tool, rather than
the
> > > final answer to successful trading.
> > >
> > >
> > > jose '-)
> > > http://metastocktools.com
> > >
> > >
> > >
> > >
> > > --- In equismetastock@xxxxxxxxxxxxxxx, "formulaprimer"
> > > <formulaprimer@xxxx> wrote:
> > > Hey Jose and MG Ferreira,
> > > What are the indicators or system do you use to trade the
> > > futures markets like grains etc???
> > > KS
>
>
>
>
>
>
>
>
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