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Roy,
Thanks for the hint. I'm thinking of upgrading to v8.01 but that is
not the issue with what I'm talking about here. I've been a long time
user of Metastock since the real-time DOS version,
I think it was 4.0 or something. I've been using 7.0 pro in the past
for system development and testing. Late last year I purchased APS
from tradingpatterns.com. I was skeptical in the beginning about
getting another program but that specific one helped me to realize a
few things about testing systems. When comparing the back testing
results of APS and Metastock for the same systems they were different
and that made me very curious. I then went manually, trade-by-trade
over a number of system testing results and I realized that Metastock
testing was wrong. The problem is that if a system exited an open
position on the open or during the day and the same signal generated
a new position on the close of the same day or the open of next day,
that specific trade would not show up in the testing. As a result,
the performance of the system was misleading or even wrong, depending
on how many trades were skipped by the tester. But here comes another
problem: If one uses a time shift as suggested to fix the tester
problem then the same formula in the explorer misses the signal.
I feel very uncomfortable that years of work with Metastock testing
systems involved such a "limitation". Even if this is solved in v8.01
that's of no cancellation for all the wrong testing results and the
missed trades.
Joe
--- In Metastockusers@xxxxxxxxxxxxxxx, "Roy Larsen" <rlarsen@xxxx>
wrote:
> Hi Joe
>
> I think the Equis "solution" is v8.01.
>
> Roy
>
> ----- Original Message -----
> From: "equtrader" <equtrader@xxxx>
> To: <Metastockusers@xxxxxxxxxxxxxxx>
> Sent: Tuesday, May 20, 2003 8:50 PM
> Subject: [Metastockusers] Re: Tester question
>
>
> > Hi Roy,
> >
> > Thanks a lot. I checked that and it works fine. But here is the
> > question: Now, using your shifting, the equity curve is correct
but
> > the signals in explorer are received one day after they are
> > generated. Because if 0 bar is today then the signal on the open
will
> > be generated one day late. I just run the tester and an
exploration
> > for a date I know the signal was generated. Your method gave the
> > correct backtest but a signal was not generated for next open. In
> > other words, you need a different formula for the tested and the
> > explorer for the same system to produce compatible results. Beyond
> > that, you may not even be getting the right signal timming if your
> > are using the formula that's good for the tester only.
> >
> > We got a serious problem here, I mean Metastock's got one.
> >
> > Joe
> >
> >
> >
> > --- In Metastockusers@xxxxxxxxxxxxxxx, "Roy Larsen" <rlarsen@xxxx>
> > wrote:
> > > I have 7.03 EOD and this certainly seems to be the way it works.
> > >
> > > I think a work-around for this would be to change your entry
code to
> > > Ref("entry code",-1) and at the same time change the System
Tester
> > to zero
> > > delay. the effect of the two changes is that the timing of your
> > signal stays
> > > the same but the System Tester doesn't not assume an overlap and
> > inhibit the
> > > trade entry as a result. I have not tested this recently but I'm
> > aware that
> > > the treatment of delays is one of the reasons my Trade Equity
can
> > produce
> > > different results.
> > >
> > > Roy
> > >
> > >
> > > ----- Original Message -----
> > > From: "equtrader" <equtrader@xxxx>
> > > To: <DEFANGED_Metastockusers@xxxxxxxxxxxxxxx>
> > > Sent: Tuesday, May 20, 2003 8:37 AM
> > > Subject: [Metastockusers] Tester question
> > >
> > >
> > > > I use 7.0 Pro.
> > > >
> > > > I have this simple formula in the tester. I noticed that when
an
> > open
> > > > position exits and a signal is generated on the same day close
> > with
> > > > an entry at the open of the next day, the tester does not take
> > that
> > > > position. Is this the way the Metastock tester works?
> > > >
> > > > Thank you
> > > >
> > > >
> > > >
> > > >
> > > >
> > > > 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/
> > > >
> > > >
> > > >
> > > >
> >
> >
> >
> > 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/
> >
> >
> >
> >
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