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Hi,
Currently to avoid reversing position you can back test long and shorts separately.
(using trade types cobo in Settings)
Best regards,
Tomasz Janeczko
===============
AmiBroker - the comprehensive share manager.
http://www.amibroker.com
----- Original Message -----
From: <box25@xxxx>
To: <amibroker@xxxxxxxxxxxxxxx>
Sent: Thursday, June 07, 2001 6:17 AM
Subject: [amibroker] Re: Position functions
> Tomasz and others,
>
> Until Tomasz can incorporate some of these variables into the next
> edition, is there another way in AFL to ignore opposing signals if I
> am already acting on a previous signal? That is, if I am "long", I
> want to be stopped out at either my profit or loss target - I do not
> want to reverse my long prematurely and go "short," and vice versa.
> Does AFL have a system variable (used to generate reports, etc.)
> which lets it know when one is long or short that can be referenced?
>
> Sincerely,
>
> David Beaudoin
>
> P.S. I am driven to qualify my question by also saying to Tomasz what
> a great piece of software Amibroker is. Great work!!!
>
>
> --- In amibroker@xxxx, "Tomasz Janeczko" <amibroker@xxxx> wrote:
> > Hello Trader and the others,
> >
> > Thank you for your very valuable suggestions. The variables
> > you describe will certainly make writing systems easier.
> > I promise to add them in the next bigger release (3.7)
> >
> > Best regards,
> > Tomasz Janeczko
> > ===============
> > AmiBroker - the comprehensive share manager.
> > http://www.amibroker.com
> >
> >
> > ----- Original Message -----
> > From: <traders10@xxxx>
> > To: <amibroker@xxxx>
> > Sent: Wednesday, June 06, 2001 9:51 PM
> > Subject: [amibroker] Position functions
> >
> >
> > > Let me start by saying I realize I am spoiled by the large
> toolbox of
> > > functions in TradeStation. However some of them are really quite
> > > useful. I will try to explain why along with my questions.
> > >
> > > While I am focusing on TS functions there may be a way to do
> these
> > > things in AB and I may not understand how to apply the AB code.
> > > Please help me out if that is the case.
> > >
> > > 1. MarketPosition: -1 short, zero out, +1 long This test is
> used to
> > > determine how your exit or stop will be applied. ie: if long and
> > > exit condition = true, then sell at market/stop...but, if you
> were
> > > short you want to buy instead.
> > >
> > > 2. EntryPrice: when the trading system buys or shorts you want
> to
> > > set stops based on this price. I have seen some of the
> workarounds
> > > the MetaStocks guys have to use...ugly
> > >
> > > 3. EntryDate: when the trading system buys or shorts you may want
> to
> > > be able to exit based on the number of days in the trade. Also
> the
> > > entry date is important for exit tests...see below
> > >
> > > 4. BarsSinceEntry: There is a BarsSince Fn in AB that might work
> for
> > > this if I also know the entry date, but this Fn is a cleaner
> > > solution. example: if I want to exit X% or Y ATRs down from a
> recent
> > > high it works much better to apply this test only if I have a
> > > position in the stock. If the stock is in a slow decline the
> > > lookback period may need to be a few months long.
> > >
> > > Without the BarsSinceEntry function, if I set the lookback period
> for
> > > 50-100 bars it is possible to have the desired exit, then a
> > > legitimate new entry followed by a false exit caused by the
> condition
> > > that initiated the first exit, maybe 70 days ago, that should
> have no
> > > valid impact on this new trade.
> > >
> > > Testing for a period of BarsSinceEntry completely solves that
> problem.
> > >
> > > I am sure I'll have some more of these soon as I continue to
> explore
> > > AB. BTW, the reason I am working in AB is the portfolio
> backtesting
> > > capability which TS does not have. :)
> > >
> > > Cheers
> > > Trader
> > >
> > >
> > > PS: different topic: Can the default field width for entry/exit
> dates
> > > in the backtester results panel be made wider to display
> mm/dd/yyyy
> > > properly?
> > >
> > > PPS: Peter Carr, thanks for the repost of your correlation Fn.
> > >
> > >
> > >
> > >
> > > Your use of Yahoo! Groups is subject to
> http://docs.yahoo.com/info/terms/
> > >
> > >
> > >
>
>
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
>
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