If you are planning on having many systems, but few custom backtester
implementations, then you could update your Custom_Backtesting.afl to
#include whichever system that you want to test, then run the
Custom_Backtesting.afl script. Any variables required by the custom
backtester are expected to be defined in whichever System.afl you
#include.
e.g.
System.afl
Buy = DayOfWeek() == 1;
Sell = DayOfWeek() == 5;
MyBackTestVar = true;
Custom_BackTesting.afl
#include <System.afl>
SetCustomBacktestProc("");
if (Status("action") == actionPortfolio) {
if (IsNull(VarGet("MyBackTestVar"))) {
_TRACE("MyBackTestVar was undefined.");
} else if (MyBackTestVar) {
_TRACE("MyBackTestVar was true.");
} else {
_TRACE("MyBackTestVar was false.");
}
bo = GetBacktesterObject();
bo.Backtest();
// Add custom metrics here...
}
If you are planning on having many custom backtest implementations, but
few systems, then you can update System.afl to #include whichever custom
backtest you want to test, then run the Ssytem.afl script. Any variables
required by the custom backtester would be expected to be passed as
procedure parameters.
System.afl
#include <CustomBacktest.afl>
Buy = DayOfWeek() == 1;
Sell = DayOfWeek() == 5;
MyBackTestVar = true;
SetCustomBacktestProc("");
if (Status("action") == actionPortfolio) {
RunCustomBackTest(MyBackTestVar);
}
Custom_Backtesting.afl
procedure RunCustomBackTest(Var) {
if (Var) {
_TRACE("Var was true.");
} else {
_TRACE("Var was false.");
}
bo = GetBacktesterObject();
bo.Backtest();
// Add custom metrics here...
}
Mike
--- In [email protected], Radek Simcik <radek.sim...@...> wrote:
>
> Hi there,
>
> I did not figure out how to pass a value from my system.afl to my
> custom_backtesting.afl
>
> Now I can call custom_backtesting.afl using SetCustomBacktestProc from
> any system.afl.
>
> But I want to be able to pass different values to my
> custom_backtesting.afl from different systems.afl without changing
> custom_backtesting.afl code.
>
> I really do not know how to do it. Any ideas?
>
> Thank you,
>
> Radek
>
> On Fri, Mar 20, 2009 at 7:00 PM, Mike sfclimb...@... wrote:
> > 1. Have a look at custom metrics.
> > http://www.amibroker.com/guide/a_custommetrics.html
> >
> > 2. You can refer to any defined variable from within your custom
backtest
> > code. Those variables can be defined in any .afl file and #include
into the
> > current .afl
> > http://www.amibroker.com/guide/afl/afl_view.php?id=1
> >
> > 3. Divide your logic into modular files and #include as needed. e.g.
> > buysell.afl, backtest.afl (#include's buysell.afl), explore.afl
(#include's
> > buysell.afl).
> >
> > Mike
> >
> > --- In [email protected], Radek Simcik radek.simcik@ wrote:
> >>
> >> hi all,
> >>
> >> could anybody give me a hint how I can add
> >> - position score
> >> - results per ticker not per trade
> >> - trigger date
> >>
> >> to my backtesting result window?
> >>
> >> Also is there any way how I can pass parameter to my customized
> >> backtester afl from my system afl? In case I want to have two
separate
> >> afl files?
> >>
> >> I want to have one special condition in my exploration but not in
my
> >> backtest/optimization. Is there any way I do not have to take care
of
> >> it manually?
> >>
> >> Thank you,
> >>
> >> Radek
> >>
> >
> >
>
