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Have you tried tech
support? The numbers you enter should not change, calculated values may be
almost anything depending on the precision and the
algorithm.
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Back in the 60's a
computer engineer at the National Bureau of Standards ran a test on several
computers using a set of different algorithms. It was solving 3 equations
in 3 unknowns, and x=y=z=1. I forget the details but some machines
gave poor results, and some algorithms were consistently better than
others.
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The problems you
mention sound like the Microsoft program that the Dept of Energy was using to
monitor fissile materials.
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<FONT face=Arial
size=2>Lionel
<FONT face=Tahoma
size=2>-----Original Message-----From: rtstrade
[mailto:rtstrade@xxxxxxxxxxx] Sent: Wednesday, October 30, 2002 4:01
PMTo: Metastockusers@xxxxxxxxxxxxxxxSubject:
[Metastockusers] Re: Optimization ValuesThanks 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@xxxx] > 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@xxxx] > >
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@xxxx] > > > 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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