Re: [amibroker] sigscalein positionsize problem

["Edward Pottasch" <empottasch@xxxxxxxxx>]

hi,

 

I didn't look at your code in detail but I can give an example of code I have written for scaling out 3 contracts for future trading.

 

Using the following setings:

 

SetOption("CommissionMode", 3);
SetOption("CommissionAmount", 2.40);
SetOption("FuturesMode",True);
NumContracts = 3;

 

you can then tell the backtester to enter 3 contracts on an extry signal using:

 

SetPositionSize( 3, spsShares );

 

then when you scale out from this position of 3 contracts, 1 contract at a time you use:

 

SetPositionSize( 1, spsShares * ( Buy == sigScaleOut OR Short == sigScaleOut ) );

I assume a similar construction can be used when scaling in. See the help for SetPositionSize,

 

rgds, Ed

 

 

 

 

----- Original Message -----

From: nightscalper

To: amibroker@xxxxxxxxxxxxxxx

Sent: Tuesday, October 16, 2007 3:05 AM

Subject: [amibroker] sigscalein positionsize problem

Hi to all,

may I ask for your help with the following code.

The positionsize does not behave as it should.
I am trying to buy "100" at first occurence of buy
signal and when scalein condition appears (drawdown),
I want to buy "100000", but backtester does set
positionsize sometimes right and sometimes not,
e.g. it buys "100000", even if it´s the first occurence
of buy signal, or buys "100", even if it´s a scalein
signal. But sometime backtester does it correct. I
just don´t get it. Initial equity in backtestersettings
is 1,000,000, so this should be no problem.

Thanks for any help finding what is wrong with the code.

Regards
robert

******************************************************************

Plot(Close,"",colorwhite,132);

Buy = Buycondition;
Sell = C<0;

ApplyStop(stopTypeProfit,stopModePoint,0.0030,1,False,1);
ApplyStop(stopTypeLoss,stopModePoint,0.0080,1,False,1);

e = Equity(1);

PyramidThreshold = 0.1;
PcntProfit = 100*(e-ValueWhen(Buy,e))/ValueWhen(Buy,e);
InTrade = Flip(Buy,Sell);
DoScaleIn = ExRem(InTrade AND PcntProfit<-PyramidThreshold,Sell);
Buy = Buy + sigScaleIn * DoScaleIn;

PositionSize = IIf(DoScaleIn,100000,100);

******************************************************************

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