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Thanks for the thoughts Lionel.
I am seeing this in the min, max, step values for the optimization.
Same place I have used the numbers before in prior versions, but now
I am getting a string instead of the value I enter. No calculations
are occurring...I should be getting the same value that I enter, but
am not.
Interesting.
Bob
--- In Metastockusers@xxxx, "Lionel Issen" <lissen@xxxx> wrote:
> If you enter a number, it will be as you entered it. If you
calculate a
> number then you will get this long string.
>
> Lionel
>
>
>
> -----Original Message-----
> From: rtstrade [mailto:rtstrade@x...]
> Sent: Wednesday, October 30, 2002 2:32 PM
> To: Metastockusers@xxxx
> Subject: [Metastockusers] Re: Optimization Values
>
>
> Humm, I have never seen this happen in any prior version. When I
> entered 0.40 it came out 0.40 not 0.40000001.
> Oh, well, it does not matter, just looked weird.
> Thanks!
> Bob
>
>
>
> --- In Metastockusers@xxxx, "Lionel Issen" <lissen@xxxx> wrote:
> > Yes. This is true for all prior versions.
> >
> > The round off string of X.999999999 or Y.00000001 can be
eliminated
> by
> > using a round off correction. This is done by adding a 5 to the
last
> > digit in the string and rounding to one digit less. Most hand
> > calculators have it as do most spreadsheet programs.
> >
> > Single precision, 16 bit, (2**16) gives about 4 digit precision.
To
> get
> > decent precision we need 32 bit precision.
> >
> > About a year or two ago Guy Tann, a very good trader, tried to use
> > Metastock Pro. He is the kind of person that checks and double
> checks.
> > He found that Metastock was giving him incorrect answers. He
quickly
> > determined that the reason was the single precision factor. When
he
> > asked Equis about this they gave a very stupid excuse. They said
> that
> > double precision would use up too much memory and they didn't
want
> to
> > impose this on their users. Now this may have been valid in the
> days of
> > the 286 and the 386, but not today with memory and hard drives
> being so
> > cheap.
> >
> > Guy dropped Metastock and stopped posting to the Listserver.
> >
> > Hope this clarifies things.
> >
> > Lionel
> >
> >
> >
> > -----Original Message-----
> > From: rtstrade [mailto:rtstrade@x...]
> > Sent: Wednesday, October 30, 2002 1:57 PM
> > To: Metastockusers@xxxx
> > Subject: [Metastockusers] Re: Optimization Values
> >
> >
> > I never experienced this in prior versions?
> > Are you seeing the same two digit value extrapolated into 7
digits
> > like I am?
> > Very weird.
> > Bob
> >
> >
> >
> > --- In Metastockusers@xxxx, "Lionel Issen" <lissen@xxxx> wrote:
> > > Round off error, usually nothing o worry about.
> > >
> > > Metastock only has single precision arithmetic, which is very
> > stupid.
> > >
> > > Lionel
> > >
> > >
> > >
> > > -----Original Message-----
> > > From: rtstrade [mailto:rtstrade@x...]
> > > Sent: Wednesday, October 30, 2002 12:41 PM
> > > To: Metastockusers@xxxx
> > > Subject: [Metastockusers] Optimization Values
> > >
> > >
> > > Maybe my program is messed up with the stop problem, etc. But
> when
> > I
> > > place a decimal value in the optimization, say 0.40 to 0.60,
with
> a
> > > step of 0.01, I get 0.40000001 to 0.60000002, step is
> 0.0099999998?
> > >
> > > Whatzup??
> > >
> > > Anyone else see this?
> > >
> > > Bob
> > >
> > >
> > >
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