Re: [amibroker] Counting ALL entries. Hi Mark H. could u pls read.

["Tomasz Janeczko" <groups@xxxxxxxxxxxxx>]

Yes this is so and will remain so because there are NO exit signals in rotational mode.
Exits in rotational mode are made if symbols falls down in ranking table and therefore
it is no longer in Top-N symbols. Since there are NO exit signals, so there are no special exit prices.
Plain and simple.

You can, however control exit price individually in custom backtest procedure.
There are lots of examples in Knowledge Base
http://www.amibroker.com/kb/category/afl/custom-backtest/

Best regards,
Tomasz Janeczko
amibroker.com
  ----- Original Message ----- 
  From: Mark H 
  To: amibroker@xxxxxxxxxxxxxxx 
  Sent: Tuesday, October 31, 2006 6:09 PM
  Subject: Re: [amibroker] Counting ALL entries. Hi Mark H. could u pls read.


  That's the nature of rotational mode, the following is from the on-line doc for EnableRotationalTrading():
  Important:
  The rotational trading mode uses "buy price" and "buy delay" from the Settings | Trade page as trade price and delay for both entries and exits (long and short)

  I don't why it was designed like that, but it is what it is now. To workaround that, you can set the buy price as close so that the stop uses the close, but in the bo.EnterTrade(..) function, use the actual open price of that symbol instead of sig.Price.

    ----- Original Message ----- 
    From: jlami11 
    To: amibroker@xxxxxxxxxxxxxxx 
    Sent: Tuesday, October 31, 2006 3:21 AM
    Subject: [amibroker] Counting ALL entries. Hi Mark H. could u pls read.


    Hello, Mark H.,

    below is the code you referred me to for Counting all Entry signals on
    backtester, even on existing open positions.
    I got it to work for my purposes, but I'm stuck.

    I'm trying to Enter on the open (1 day delay), while exiting on the
    close after X days.

    I just can't get it to enter on open while exiting on close. I don't
    know what code to write for these.

    I tried setting it in trade settings page, but when I set Entry to
    Open price, the Exit exit's on Open price too, even though it's set on
    Close price.

    I've spent ages trying to work this out, if anyone could give some
    help i'd be very grateful.

    ---Below is coding u reffered me to... i used almost same code--

    EnableRotationalTrading();
    SetOption("WorstRankHeld",160); // this number needs to be big enough.
    Only 2*WorstRankHeld signals will be held by CBT each bar.
    SetOption("MaxOpenPositions", 100);
    SetOption("InitialEquity", 30000);
    SetOption("CommissionMode", 1); //% per trade
    SetOption("CommissionAmount", 0.5);
    SetOption("MarginRequirement", 50);
    SetOption("UsePrevBarEquityForPosSizing", True);
    SetOption("MinShares", 100);

    SetTradeDelays( 1, 1, 1, 1 );
    RoundLotSize = 5;

    ......

    ApplyStop( stopTypeNBar, stopModeBars, 10);

    Sell0 = ...; // Rename sell/buy to sell0/buy0 since you can have
    sell/buy in rotational mode.
    Buy0 = ...;
    Sell0[0] = 1; // trick to remove leading sell signals
    Sell0 = ExRem( Sell0, Buy0 );
    Sell0[0] = 0;

    RawScore = 100 + ......; // make sure it is greater than 2
    PositionScore = 1;
    for(i = 0; i < BarCount; i++)
    {
    if(Buy0[i]) PositionScore[i] = RawScore[i];
    else if(Sell0[i]) PositionScore[i] = 2;
    else PositionScore[i] = C[i]/H[i]; //semi-random
    }

    SetOption("UseCustomBacktestProc", True );

    if( Status("action")== actionPortfolio )
    {
    bo = GetBacktesterObject();

    bo.PreProcess(); // Initialize backtester

    for(bar=0; bar < BarCount; bar++)
    {
    bo.HandleStops(bar-1); // if use bar not bar-1, the
    n-bar exits have one extra bar delay. don't know why.
    for ( sig=bo.GetFirstSignal(bar); sig; sig=bo.GetNextSignal(bar) )
    { 
    // first handle exit signals (PosScore = 2)
    if ((sig.PosScore == 2 OR sig.isExit()) AND sig.Price
    != -1 )
    {
    bo.ExitTrade(bar,sig.symbol,sig.Price);
    }
    }

    // update stats after closing trades
    bo.UpdateStats(bar, 1 );

    for ( sig=bo.GetFirstSignal(bar); sig;
    sig=bo.GetNextSignal(bar))
    {
    // Entry Signals (PosScore > 2)
    // Only one position per symbol
    if (sig.PosScore > 2 AND sig.Price != -1 AND IsNull(
    bo.FindOpenPos( sig.Symbol )))
    { 
    // long only
    bo.EnterTrade(bar, sig.symbol, True, sig.Price,
    sig.PosSize, sig.PosScore,sig.RoundLotSize);
    } 
    }

    bo.UpdateStats(bar,1); // MAE/MFE is updated when
    timeinbar is set to 1.
    bo.UpdateStats(bar,2); 
    }
    bo.PostProcess(); // Finalize backtester
    }



   
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