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Grahem ,
often you can filter these mistakes and use YAHOO and amiquote to fix.
I use Paritech and its ok system but there is lots around . I'm not
sure if any suppliers can claim ultimate accuracy as I have seen so
much discrepency across board but if you can test your system using
random parameters in the test then it allows for slight movements in data.
eg. I use in BUY = your buy AND random() > 0.2 ;
means that not all buys are made and this can be perforemd many times
using
dummy optimize = optimize( "dummy" ,1,1,100 ) ;
Using these two above you can then test 100 times the say 5-10 year
period and see how robust the system is in creating profit if you
missed a few trades here and there .
regards
maurice
--- In amibroker@xxxxxxxxxxxxxxx, Graham <kavemanperth@xxxx> wrote:
> with Norgate you can only get unpadded data
>
>
> On Tue, 08 Feb 2005 22:57:26 +1100, Andrew Z <wizard@xxxx> wrote:
> >
> > Oh, one more question. Should I be looking at padded or unpadded
data to
> > use with AmiBroker?
> >
> > Thanks...
> >
> > > This is mainly a question for all you aussies out there. For
those that
> > > use EOD data, which data services do you use to get your data? I
have
> > > been using a free data download service. During my limited
backtesting
> > > I get some decent results. On further checking I see many
instances of a
> > > buy at a ridiculously low price and a sell 3/4/5 weeks later for a
> > > 1000%+ gain. Further investigation and comparison to data from 2
other
> > > sites I have access to reveals that my initial buy price (and
volume)
> > > are incorrect! So, i'm now looking for a paid EOD data service
and new
> > > historical data. Anyone have any history with cooltrader.net? Or
others??
> > > Much appreciated,
> > > Andrew.
> >
> >
> > Check AmiBroker web page at:
> > http://www.amibroker.com/
> >
> > Check group FAQ at:
http://groups.yahoo.com/group/amibroker/files/groupfaq.html
> > Yahoo! Groups Links
> >
> >
> >
> >
> >
>
>
> --
> Cheers
> Graham
> http://e-wire.net.au/~eb_kavan/
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