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Hello Bill,
What I wrote was my personal opinion, nothing
more.
I had a chance to hear the opinions about
AmiBroker from different people
and what I learned is that there is a very wide
spectrum of different views
and preferences among T/A people. AmiBroker is not
all about backtesting
(while WL seems to be). AmiBroker tries to
satisfy these needs
as much as possible. Unfortunatelly different
needs are sometimes contrary
to each other.
This applies especially to the programing
language.
One may say he would prefer a simpler language
another one likes sophisticated
and very complicated tool. I like to codein C++
others like Basic, Pascal and do on.
I have my reasons, you can have
yours.
That's why I am providing in fact 3 alternatives:
you may code your formula in
"pure" AFL, you can use JScript or you can use
VBScript. You can also mix
the languages in a single formula.
The AFL itself will be improved further so you
will be amazed someday :-)
To the details:
1. Yes,
BuyAtStop and all trade control functions are
nice, because
it is clearer to say BuyAtStop than doing
buyprice, buy stuff together the right way.
2. GetDate, CumUp - I don't see WL advantage here
<FONT face=Tahoma
size=2>
3. I don't find
any advantage of DrawLine and SetBar color since completely the
same
could be done in AFL using graphX, graphXstyle,
graphXbarcolor. All the difference
is that in WL you call a function while in AFL you
assign a variable. I can add a function
that is called DrawLine and will internally assign
the variables so there is no real difference,
... maybe except AFL can draw true Gann Swing
charts (see AFL library)
while WL doesn't have square line style
chart.
A bottom line:
Trade control in WL is better and nicer and I am
willing to improve this functionality in AFL,
I like also the statistics in WL. I thinkthat
there are lots of nice ideas in WL to get an inspiration from.
And I really appreciate that you pointed out the
things you like in WL - I learned something
again.
All I dislike is a modal, Borland-looking(ugly
icons on every button), bold-font everywhere user-interface.
This is however my personal opinion basedon my
personal taste.
Best regards,Tomasz Janeczko===============AmiBroker - the
comprehensive share manager.<A
href="">http://www.amibroker.com
<BLOCKQUOTE
>
----- Original Message -----
<DIV
>From:
wavemechanic
To: <A title=amibroker@xxxxxxxxxxxxx
href="">amibroker@xxxxxxxxxxxxxxx
Sent: Wednesday, July 25, 2001 2:24
AM
Subject: Re: [amibroker] Backtesting
reports
Tomasz:
Have to disagree to some extent. As younote,
the interface is a matter of personal preference, although I tend to sidewith
Bernard. However, and most importantly, from a "programming dummy"
user's viewpoint, WealthScript might suffer from the problems that you note,
but it is relatively clear with respect to trading system and drawing
functions. Perhaps it is not as efficient as AFL, but it is easy to
build a system with commands like BuyAtStop, GetDate, CumUp, etc., with
only a couple of tutorials as a guideline. And being able to
incorporate drawing functions (e.g., DrawLine, SetBarColor, etc.) in a
straightforward manner is great, although more is needed in this area (tobe
expanded in version 2 according to WL). Definitely an attempt to
produce a user-friendly programming environment. Easy to use,
"intuitive" system and drawing functions are arguably
essential endpoints. So much the better, if these attributes can be
further enhanced with respect to speed and simplicity, and placed within the
AmiBroker setting. Or so it seems to this programming
dummy.
Bill
<BLOCKQUOTE
>
----- Original Message -----
<DIV
>From:
Tomasz Janeczko
To: <A title=amibroker@xxxxxxxxxxxx
href="">amibroker@xxxxxxxxxxxxxxx
Sent: Tuesday, July 24, 2001 4:44
PM
Subject: Re: [amibroker] Backtesting
reports
Dear Bernard,
Thank you for your opinion.
I have downloaded a trial version of WealthLab
desktop and had a look at it.
Frankly speaking I don't like its user
interface - but this is my private opinion.
What I like are extensive back-testing
statistics. These I would like to see
in AmiBroker.
As for the WealthScript I find it quite
complicated. You have to have at least
3-4 times more code than in AFL to dothe same
thing.
Also - I tried to check very basic MA
crossover system and wanted to simulate
trading using 100% capital and WealthLab
displayed very strange equity curve
(with negative cash amounts). What's more
WealthScript seems to be very slow.
As for optimization: yes I will include
optimization in 3.7, this will include
multiple-security optimization.
By the way: it seems that you can only
optimize for one stock in WealthLab, is it true?
Anyway, some ideas are worth
implementing.
<FONT face=Tahoma
size=2>
Best regards,Tomasz
Janeczko===============AmiBroker - the comprehensive share
manager.<A
href="">http://www.amibroker.com
<BLOCKQUOTE
>
----- Original Message -----
<DIV
>From:
Bernard
Bourée
To: <A
title=amibroker@xxxxxxxxxxxxxxx
href="">amibroker@xxxxxxxxxxxxxxx
Sent: Tuesday, July 24, 2001 7:17
PM
Subject: Fw: [amibroker]
Backtesting reports
Dear Tomasz
I have a doubt if my message was
published since I can't see it and in fact I haven't finished it. So here
it is completed.
Well I like the following feature (in the
desktop version):
-A window where you can easily find the
systems/commentary classified in folders and sorted by name or date
etc.
-The ChartScript window, the equivalent of
the AB main window, have some TAB where you can very easily evaluate a TS
: The first one show the performance, the second the list of the trades,
then one for the alerts, one for the text of the TS, one for optimisation
(I hope that you will implement it in AB soon), an other one called
MonteCarlo (I guess it is to make more complex optimisation using the
Monte Carlo method), the last one is called Analysis Var but I don't know
what it is.
They have also a window where you can
select the trading systems, run them on a watchlist and performa
ranking of the performances..
You can download the desktop versionfor a
free trial period and have a good idea of the product.
It is much more expensive than AB but you
have given to us the proof that you can easily compete with such
products.
In fact more I try to find a good trading
systerm more I came to the conclusion that there is not one good trading
system but we have to find for each period of time, for each
market and perhaps for each stock one good TS which could have to be
changed and adapted as soon as the market conditions move.
This means that we need to have a tool that
allow us to optimize and compare a bunch of TS periodically.
So I whish that AB could help us in this task
and allow to adapt and optimise our TS easily.
For this Tomasz it would be nice if we could
more easily change the parameters of the TS or the charts with contextual
menus intead of having to write AFL codes.
Best regards
Bernard Bourée<A
href="">bernard@xxxx
<BLOCKQUOTE
>
----- Original Message -----
<DIV
>From:
Tomasz
Janeczko
To: <A
title=amibroker@xxxxxxxxxxxxxxx
href="">amibroker@xxxxxxxxxxxxxxx
Sent: Monday, July 23, 2001 9:50
PM
Subject: Re: [amibroker]
Backtesting reports
Dear Bernard,
Could you please tell me what exactly do
you like in WL's user interface?
Best regards,Tomasz Janeczko===============AmiBroker -
the comprehensive share manager.<A
href="">http://www.amibroker.com
<BLOCKQUOTE
>
----- Original Message -----
<DIV
>From:
Bernard
Bourée
To: <A
title=sentto-1010692-2837-995838278-bbouree=fairesuivre.com.at.returns.onelist.com@xxxx
href="">sentto-1010692-2837-995838278-bbouree=fairesuivre.com.at.returns.onelist.com@xxxx
; <A title=amibroker@xxxxxxxxxxxxxxx
href="">amibroker@xxxxxx
Sent: Monday, July 23, 2001
7:18 PM
Subject: Re: [amibroker]
Backtesting reports
Hello Tomasz
Yes, there is some good ideas touse in
terms of agronomy (windows design and parameters
settings).
Regards
Bernard Bourée<A
href="">bernard@xxxx
<BLOCKQUOTE
>
----- Original Message -----
<DIV
>From:
Tomasz
Janeczko
To: <A
title=amibroker@xxxxxxxxxxxxxxx
href="">amibroker@xxxxxxxx
Sent: Sunday, July 22, 2001
11:21 PM
Subject: Re: [amibroker]
Backtesting reports
Hi,
WealthLab is nice. I am curious how
long will they be free.
I found some interesting ideas
there...
Best regards,Tomasz
Janeczko===============AmiBroker - the comprehensive share
manager.<A
href="">http://www.amibroker.com
<BLOCKQUOTE
>
----- Original Message -----
<DIV
>From:
<A title=wd78@xxxx
href="">wavemechanic
To: <A
title=amibroker@xxxxxxxxxxxxxxx
href="">amibroker@xxxxxxxxxx
Sent: Saturday, July 21,
2001 10:24 PM
Subject: Re: [amibroker]
Backtesting reports
Tomasz:
How about entry to lowest trough = trade
drawdown
Did you notice the script functions
listed on the Wealth-Lab site? Is that where AB is
headed?
Bill
<BLOCKQUOTE
>
----- Original Message -----
<DIV
>From:
Tomasz
Janeczko
To: <A
title=amibroker@xxxxxxxxxxxxxxx
href="">amibroker@xxxxxxxxxxxx
Sent: Saturday, July21,
2001 4:20 PM
Subject: Re: [amibroker]
Backtesting reports
Hello,
Thank you for the
information.
BTW, here is a definitionof Max.
Intraday drawdown from wealthlab:
"Max IntraDay Drawdown
This value represents the greatest peak to
trough distance in your equity curve. Beware of Systems
that have a high Drawdown value."
This is exactly what I meant in my previous
e-mail: "greatest peak to trough distance".
Now: how should we call entry to lowest trough
distance ( a drawdown measure already present in AmiBroker)
??
Best regards,Tomasz
Janeczko===============AmiBroker - the comprehensive
share manager.<A
href="">http://www.amibroker.com
<BLOCKQUOTE
>
----- Original Message-----
<DIV
>From:
<A title=wd78@xxxx
href="">wavemechanic
To: <A
title=amibroker@xxxxxxxxxxxxxxx
href="">amibroker@xxxxxxxxxxxxxx
Sent: Saturday,July
21, 2001 9:18 PM
Subject: Re:
[amibroker] Backtesting reports
Tomasz:
Since you will have maximum
drawdown, I suggest including Risk-Adjusted Return
(RAR). This is a standard system evaluation metric that
divides a risk measurement by the annualized rate of
return. You could use maximum drawdown as the risk
measurement, but other measures (volatility, standard
deviation, etc.) would also work.
The following link lists the system
evaluation parameters used by
Wealth-Lab:
<A
href="">http://www.wealth-lab.com/cgi-bin/WealthLab.DLL/getpage?page=$imOverview.htm
Bill
----- Original Message -----
<BLOCKQUOTE
>
<DIV
>From:
<A title=tj@xxxx
href="">Tomasz Janeczko
To: <A
title=amibroker@xxxxxxxxxxxxxxx
href="">amibroker@xxxxxxxxxxxxxxxx
Sent: Saturday, July
21, 2001 12:00 PM
Subject: [amibroker]
Backtesting reports
Hello,I would like to ask
you:What additional back-testing statistics would you
like to see in AmiBroker?Please give me your
suggestions with the description.For version 3.64
already included are:- Annual system percentage
profit- Annual B&H percentage profit-
Maximum drawback calculated from maximum equity
value to the minimum equity value (BTW:
How to name this one? I have no idea) (note this
is different from current max. drawback calculation
which computes max. equity dip from
the trade entry)- Bars out of marketI have
got already some of your earlier suggestionsbut anyone
has something more?Best regards,Tomasz
Janeczko===============AmiBroker - the comprehensive
share manager.<A
href="">http://www.amibroker.com Your
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