|
PureBytes Links
Trading Reference Links
|
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
> >
> >
> >
> > Yahoo! Groups Sponsor
> >
> > ADVERTISEMENT
> >
> >
>
<http://rd.yahoo.com/M=219695.2310151.3725769.1980433/D=egroupweb/S=17
> 05
> >
>
001779:HM/A=1226184/R=0/*http://ad.doubleclick.net/jump/N879.ameritrad
> e.
> > yahoo/B1054521.11;sz=300x250;adc=ZHS;ord=1036003268?>
> >
> > <http://us.adserver.yahoo.com/l?
> M=219695.2310151.3725769.1980433/D=egrou
> > pmail/S=:HM/A=1226184/rand=716082194>
> >
> > To unsubscribe from this group, send an email to:
> > Metastockusers-unsubscribe@xxxx
> >
> >
> >
> > Your use of Yahoo! Groups is subject to the Yahoo! Terms of
Service
> > <http://docs.yahoo.com/info/terms/> .
>
>
>
> Yahoo! Groups Sponsor
>
> ADVERTISEMENT
>
>
<http://rd.yahoo.com/M=219695.2310151.3725769.1980433/D=egroupweb/S=17
05
>
001779:HM/A=1226184/R=0/*http://ad.doubleclick.net/jump/N879.ameritrad
e.
> yahoo/B1054521.11;sz=300x250;adc=ZHS;ord=1036007825?>
>
> <http://us.adserver.yahoo.com/l?
M=219695.2310151.3725769.1980433/D=egrou
> pmail/S=:HM/A=1226184/rand=165181418>
>
> To unsubscribe from this group, send an email to:
> Metastockusers-unsubscribe@xxxx
>
>
>
> Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service
> <http://docs.yahoo.com/info/terms/> .
------------------------ Yahoo! Groups Sponsor ---------------------~-->
Plan to Sell a Home?
http://us.click.yahoo.com/J2SnNA/y.lEAA/jd3IAA/zMEolB/TM
---------------------------------------------------------------------~->
To unsubscribe from this group, send an email to:
Metastockusers-unsubscribe@xxxxxxxxxxx
Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
|