Always document your logic using comments. Good documentation saves hours of troubleshooting down the road.
// Example: Custom Trailing Stop Loop StopPrice = Null; InTrade = 0; for( i = 1; i < BarCount; i++ ) if( Buy[i] AND !InTrade ) InTrade = 1; StopPrice[i] = Close[i] * 0.95; // 5% initial stop loss else if( InTrade ) // Trailing stop: Move stop up if price rises, otherwise keep previous stop StopPrice[i] = Max( Close[i] * 0.95, StopPrice[i-1] ); // Check if stopped out if( Low[i] <= StopPrice[i] ) Sell[i] = 1; SellPrice[i] = StopPrice[i]; InTrade = 0; Use code with caution. Custom Functions and External Code Inclusion amibroker afl code
SetBacktestMode( backtestRotational ); LevyPeriod = Optimize( "LevyPeriod", 130, 50, 250, 10 ); CastOutRank = Optimize( "CastOutRank", 230, 100, 300, 10 ); MaxPositions = 10; SetOption( "MaxOpenPositions", MaxPositions ); SetOption( "WorstRankHeld", CastOutRank ); SetPositionSize( 10, spsPercentOfEquity ); LevyRS = Close / MA( Close, LevyPeriod ); SpyClose = Foreign( "SPY", "C" ); MarketOK = MA( SpyClose, 5 ) > MA( SpyClose, 200 ); Illiq = High == Low; Summe_Illiq = Sum( Illiq, 20 ); StockOK = Summe_Illiq <= 3; PositionScore = IIf( MarketOK AND StockOK, Max( LevyRS, 0 ), 0 ); Always document your logic using comments
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