Code — Amibroker Afl
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Operations apply to the whole data series automatically.
AFL uses standard operators for mathematical and logical comparisons: + , - , * , / , % (modulus). Relational: > , < , >= , <= , == (equality), != (inequality). Logical: AND , OR , NOT . Compound Assignment: += , -= , *= , /= .
Crucial Rule: When writing a loop, you must index your arrays using square brackets [i] . amibroker afl code
Writing beautiful is only half the battle. The path to profitability requires:
Traders use AFL to design everything from simple moving average crossovers to complex volatility-based breakout systems .
_TRACE("Bar " + WriteVal(i, 1.0) + " Close: " + WriteVal(C[i], 1.4)); This public link is valid for 7 days
MAPeriod = Param( "MA Period", 20, 5, 200, 1 ); // Name, default, min, max, step MAType = ParamList( "MA Type", "Simple,Exponential,Weighted" ); if( MAType == "Simple" ) CalculatedMA = MA( Close, MAPeriod ); if( MAType == "Exponential" ) CalculatedMA = EMA( Close, MAPeriod ); if( MAType == "Weighted" ) CalculatedMA = WMA( Close, MAPeriod ); Plot( CalculatedMA, MAType + " MA", colorOrange ); Use code with caution. Code Optimization
Using or COM interface , you can bridge to Interactive Brokers, Tradier, or a custom API.
For your next steps, determine whether you want to or backtest an automated portfolio strategy . If you have a specific trading logic in mind, Share public link Can’t copy the link right now
Always backtest.
It supports sophisticated portfolio-level backtesting and multi-variable optimization to find the most robust strategy parameters.
SetOption( "InitialEquity", 100000 ); SetOption( "DefaultPositionSize", -10 ); // Invest 10% of equity per trade SetOption( "CommissionMode", 1 ); // 1 = points, 2 = percent SetOption( "CommissionAmount", 0.01 ); // $0.01 per share SetOption( "MaxOpenPositions", 10 ); // Limit portfolio to 10 concurrent trades Use code with caution. Portfolio-Level Position Sizing
fast = Optimize( "Fast MA", 5, 2, 20, 1 ); slow = Optimize( "Slow MA", 20, 10, 50, 2 ); Buy = Cross( MA( Close, fast ), MA( Close, slow ) ); Sell = Cross( MA( Close, slow ), MA( Close, fast ) );