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The COM stuff is also useable by external scripts and that
is when these particular functions are very useful. If you use an external
script to control AB then you CAN load the settings file and then load the
formula and then run the formula. But the way AB is written this procedure
does NOT work when you try to do the COM work inside an AFL formula.
d
Thanks Graham. Yes I thought I knew the 'AB
Bible'. But it's telling me something else
than what AB is doing. And I just do not
understand why. In the 'AmiBroker Object Model'
document LoadSettings is a method. Even the
example in mentioned document says that
LoadSettings should set the Backtest environment
to the loaded 'abs' file. So in
my humble opinion this should do what it says
:
// Create AB object
AB =
CreateObject("Broker.Application");
// Retrieve AA object
AA = AB.Analysis;
// Load
Mysettings1
AA.LoadSettings("C:\Program
Files\AmiBroker\Settings\MySettings1.abs");
... setting the backtester environment to
'MySettings1.abs'. Unfortunately it's not doing that and I do not understand why not. If the manual tells me different
things than what I am seeing something is
wrong. It's me of course. But why ?
I know the discussion about this
topic on the Forum. Running Loadsettings in an AFL is too late
for the rest of the AFL code. So I should run
it before the rest of the AFL. Let's say I am creating a separate AFL with just the above code and run the rest in
another AFL after that. But even this seems to
do nothing. The only thing I am getting the AA Window. That's
all. I don't get it ...
Regards, Ton.
----- Original Message -----
Sent: Saturday, March 22, 2008 10:26
AM
Subject: Re: [amibroker] What's wrong
with my formula (trouble with custombacktest)
The advanced backtest code is explained in the help files, see Amibroker
Formula Language - Advanced Porfolio Backtester
Interface.
Advanced code is for changing the backtest trades,
or producing your own metrics after the main first pass (normal) backtest is
completed. (note: custom backtest and advanced backtest refer to the same
thing)
You have not shown any of this in the information provided.
All you have shown are the front end settings which are used during the
standard backtest, and are to be included in the main part of the AFL code,
not in the custom backtest part.
--
Cheers
Graham
Kav
AFL Writing Service
http://www.aflwriting.com
On 22/03/2008, Ton
Sieverding <ton.sieverding@scarlet.be>
wrote:
I don't follow Graham and of course would
like to be corrected. Are you telling me
that when starting my AFL with following
instruction, the Backtester is not accepting
these settings when running the AFL
?
AA.LoadSettings("MySettings.abs");
If the Backtester is not following this
instruction what than is the purpose of the
SAVE and LOAD feature in AA ? I have the
feeling that I can save more setting
details by using the AA Settings screen than
by loading the underneath mentioned
Settings.AFL. In other words, I my opinion
there are more settings in de AA Settings
than I will find in the Setoption instruction ... And it's a hell of a lot easier to
make an
ABS file than and Settings.AFL
...
Regards, Ton.
----- Original Message -----
Sent:
Friday, March 21, 2008 9:57 PM
Subject:
Re: [amibroker] What's wrong with my formula (trouble with
custombacktest)
These are not custom (advanced) backtest codes, just the options for
backtesting, and do not belong in the advanced file. They will not be
read until after the backtest has been completed and is ready for
changing in the cbt.
If you want these standard for all backtesting,
then just use #Include function, not
#include "C:\Program
Files\Amibroker1\Formulas\Custom\custom_backtest.afl";
--
Cheers
Graham Kav
AFL Writing Service
http://www.aflwriting.com
On 22/03/2008, Ton Sieverding <ton.sieverding@scarlet.be> wrote:
Louis please go to the 'Automatic
Analysis' Tool and open the Settings. Modify all values according
to want you want to see. Then SAVE everything in an ABS file that
you can open in the beginning of your AFL. That's all ...
Regards, Ton.
-----
Original Message -----
Sent:
Friday, March 21, 2008 2:54 PM
Subject:
Re: [amibroker] What's wrong with my formula (trouble with
custombacktest)
Hi,
Ok let me try to explain again.
I have a file
with
run =
Optimize ("run", 1,1,1000,1);
SetOption("UseCustomBacktestProc",
True );
SetCustomBacktestProc(
"C:\\Program
Files\\Amibroker1\\Formulas\\Custom\\custom_backtest.afl"
);
SetOption("MaxOpenPositions", 5
);
SetOption("InitialEquity", 100000
);
SetOption("AllowPositionShrinking",
True );
SetOption ("AllowSameBarExit",
False);
SetOption
("ActivateStopsImmediately", False);
SetOption ("MinShares",
100);
SetOption ("MinPosValue",
5000);
SetOption ("PriceBoundChecking",
True);
SetOption ("CommissionMode",
2);
SetOption ("CommissionAmount",
25);
SetOption ("AccountMargin",
100);
SetOption
("ReverseSignalForcesExit", True);
SetOption
("UsePrevBarEquityForPosSizing", True);
SetOption ("PortfolioReportMode",0
);
ShortTrades = ParamToggle("Short
Trades?","Oui|Non",1);
Longtrades = ParamToggle("Long
Trades?","Oui|Non",1);
PositionScore =
Random();
buy=....;
sell=.....;
short=....
etc.
Then, in c:\\Program
Files\\Amibroker1\\Formulas\\Custom\\custom_backtest.afl
I have another file with
SetOption("MaxOpenPositions", 5
);
SetOption("InitialEquity", 100000
);
SetOption("AllowPositionShrinking",
True );
SetOption ("AllowSameBarExit",
False);
SetOption
("ActivateStopsImmediately", False);
SetOption ("MinShares",
100);
SetOption ("MinPosValue",
5000);
SetOption ("PriceBoundChecking",
True);
SetOption ("CommissionMode",
2);
SetOption ("CommissionAmount",
25);
SetOption ("AccountMargin",
100);
SetOption
("ReverseSignalForcesExit", True);
SetOption
("UsePrevBarEquityForPosSizing", True);
SetOption ("PortfolioReportMode",0
);
and when
I click "backtest" nothing happens if
SetOption("UseCustomBacktestProc",
True );
but it
works well if
SetOption("UseCustomBacktestProc",
False);
but of
course I'd prefer to use the custom backtest.
Also, if
I click the "use custom backtest" in the AB interface and choose the
first file or the second, still nothing happens if
custombacktestproc is true. It has to be false for results to
show.
Can you
help?
Thanks,
Louis
2008/3/21, Graham <kavemanperth@gmail.com>:
I do not understand what you mean by parameters. The custom
file is for the advanced backtest coding that is read after the
portfolio backtest run is complete to either change the backtest
or report special custom metrics.
If all you want is input
information for the afl, then use #include
--
Cheers
Graham Kav
AFL Writing Service
http://www.aflwriting.com
On 21/03/2008, Louis Préfontaine <rockprog80@xxxxxxcom> wrote:
Hi Graham, Yes I have the file setted as you said,
but what exactly should I put in that file? If I put only
the parameters and no rule, is it ok? Ton: I am not sure
what is AA or ABS... Louis
2008/3/19, Ton Sieverding <ton.sieverding@scarlet.be>:
Louis, why are you using all
these SetOptions when AA has the ABS facility ? Create an ABS,
load the ABS in your AFL with LoadSettings method and
you've got what you want. What's wrong with that
?
Regards, Ton.
-----
Original Message -----
Sent:
Wednesday, March 19, 2008 3:54 AM
Subject:
Re: [amibroker] What's wrong with my formula (trouble with
custombacktest)
Hi,
I don't have 4.90, so setbacktestmode does not
work...
I edited a new file with this
inside:
run = Optimize ("run",
1,1,1000,1);
SetOption("UseCustomBacktestProc",
True );
SetOption("MaxOpenPositions",
5 );
SetOption("InitialEquity",
100000 );
SetOption("AllowPositionShrinking",
True );
SetOption
("AllowSameBarExit", False);
SetOption
("ActivateStopsImmediately", False);
SetOption ("MinShares",
100);
SetOption ("MinPosValue",
5000);
SetOption
("PriceBoundChecking", True);
SetOption ("CommissionMode",
2);
SetOption
("CommissionAmount", 25);
SetOption ("AccountMargin",
100);
SetOption
("ReverseSignalForcesExit", True);
SetOption
("UsePrevBarEquityForPosSizing", True);
SetOption
("PortfolioReportMode",0 );
ShortTrades =
ParamToggle("Short Trades?","Oui|Non",1);
Longtrades =
ParamToggle("Long Trades?","Oui|Non",1);
PositionScore =
Random();
and saved it as
custom_backtest.afl at the right place.
Then I added this at the beginning of the file with my
formula:
SetOption("UseCustomBacktestProc",
True );
SetCustomBacktestProc(
"C:\\Program
Files\\Amibroker\\Formulas\\Custom\\custom_backtest.afl"
);
I don't understand why it is not
working...
Louis
2008/3/18, Graham <kavemanperth@gmail.com>:
If you set custombacktestproc as true , you
must have a custom backtest code to
read.
you could try the function
SetBacktestMode
--
Cheers
Graham Kav
AFL Writing Service
http://www.aflwriting.com
On 19/03/2008, Louis Préfontaine <rockprog80@xxxxxxcom>
wrote:
Hi,
My formula starts like this:
run =
Optimize ("run", 1,1,1000,1);
SetOption("UseCustomBacktestProc",
True );
SetOption("MaxOpenPositions",
5 );
SetOption("InitialEquity",
100000 );
SetOption("AllowPositionShrinking",
True );
SetOption
("AllowSameBarExit", False);
SetOption
("ActivateStopsImmediately", False);
SetOption ("MinShares",
100);
SetOption ("MinPosValue",
5000);
SetOption
("PriceBoundChecking", True);
SetOption
("CommissionMode", 2);
SetOption
("CommissionAmount", 25);
SetOption
("AccountMargin", 100);
SetOption
("ReverseSignalForcesExit", True);
SetOption
("UsePrevBarEquityForPosSizing", True);
SetOption
("PortfolioReportMode",0 );
ShortTrades =
ParamToggle("Short Trades?","Oui|Non",1);
Longtrades =
ParamToggle("Long Trades?","Oui|Non",1);
PositionScore =
Random();
buy=.................................
sell=.....
etc.
Is there
something wrong with this, as when I click "backtest" I
see no results. When I change the
custombacktestproc for "false" everything works well,
but how do I do to get it my own way? Cause I'd
like to be able to be in more than one trade at a
time. And also, I think been in more than
one trade at a time could make my Monte Carlo
backtesting more reliable (am I
right?).
Thanks,
Louis
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