[amibroker] Re: How do I get the price and indicator values in the custom backtester?

[Mike]

Hi,

Sorry, the SetForeign advice was good. But, my example propogated 
another error in your original code. sig.PosSize is a scaler, not an 
array. As such, you cannot pass the result of an array calculation as 
value. Instead, you must calculate the value for the given bar. Your 
original example thus becomes:

SetCustomBacktestProc("");

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

    for ( bar = 0; bar < BarCount; bar++ )
    {
        CurrentEquity = bo.Equity;

        for ( sig = bo.GetFirstSignal( bar ); sig; sig = 
bo.GetNextSignal( bar ) )
        {
            SetForeign( sig.Symbol );
            YesterdayClose = Ref(C, -1);
            YesterdayATR = Ref(ATR(10), -1);
            sig.PosSize = CurrentEquity * YesterdayClose[bar] / 
YesterdayATR[bar];
            RestorePriceArrays();
        }

        bo.ProcessTradeSignals( bar );
    }

    bo.PostProcess();
}

Note also that you should be calling bo.PostProcess instead of 
bo.ListTrades.

Mike

--- In amibroker@yahoogroups.com, "ezbentley" <ezbent...@...> wrote:
>
> Hi Mike, 
> 
> Thanks for the attempt to help. However, I still get an error with 
the following code:
> 
> SetForeign(sig.Symbol);
> sig.PosSize = CurrentEquity * AccountRiskPercent * ref(C, -1) / 100;
> RestorePriceArrays();
> 
> Error 19. COM method/function 'PosSize' call failed. 
> 
> Thanks,
>