Track modifications to your AFL files using Git or basic timestamped backups (e.g., Strategy_v1.1.afl ) so you can easily revert breaking changes. To help you fix or optimize your setup, tell me:
: Verify that the functions used are supported by your specific AmiBroker Edition (Standard vs. Professional). 2. Logical & Strategic Verification
// 1. System Settings & Backtester Setup SetOption("InitialCapital", 100000); SetOption("DefaultPositions", 5); SetOption("CommissionMode", 1); // Percentage basis SetOption("CommissionAmount", 0.03); SetTradeDelays(1, 1, 1, 1); // Trade on the next day's open to avoid look-ahead bias // 2. Strategy Parameters (User Adjust-able) FastPeriod = Param("Fast MA Period", 15, 2, 100, 1); SlowPeriod = Param("Slow MA Period", 45, 2, 200, 1); // 3. Core Mathematical Indicators FastMA = MA( Close, FastPeriod ); SlowMA = MA( Close, SlowPeriod ); // 4. Trading Logic (Signals) Buy = Cross( FastMA, SlowMA ); Sell = Cross( SlowMA, FastMA ); // Remove redundant consecutive signals Buy = ExRem( Buy, Sell ); Sell = ExRem( Sell, Buy ); // 5. Price and Indicator Visualizations Plot( Close, "Price Chart", colorCandle, styleCandle ); Plot( FastMA, "Fast MA (" + FastPeriod + ")", colorBlue, styleLine | styleThick ); Plot( SlowMA, "Slow MA (" + SlowPeriod + ")", colorOrange, styleLine | styleThick ); // 6. Signal Visualizations (Visual Verification Anchor) PlotShapes( IIf( Buy, shapeUpArrow, shapeNone ), colorGreen, 0, Low, -15 ); PlotShapes( IIf( Sell, shapeDownArrow, shapeNone ), colorRed, 0, High, -15 ); Use code with caution. Best Practices for Sourcing Verified AFL Code
// If your strategy uses Zig, Peak, Trough, or Ref with +1, it's dangerous str = GetScriptText(); if(Find("Zig", str) != -1 OR Find("Peak", str) != -1 OR Find("Trough", str) != -1) return True; else return False; amibroker afl code verified
Backtesting verification ensures your strategy’s performance metrics are accurate and reproducible.
Even if code verifies, it must be readable.
Run your script, then open . If you see a warning, your code is not verified. Track modifications to your AFL files using Git
To ensure your code meets institutional standards, implement this structured verification pipeline. Step 1: Utilize the Code Check and Profile Tools
Verified code is not just “correct” under ideal conditions; it handles edge cases gracefully.
AmiBroker automatically checks that BuyPrice , SellPrice , ShortPrice , and CoverPrice fall within the of the bar. If a price is out of range, AmiBroker adjusts it (e.g., exceeding High becomes High). This can cause unexpected entry prices, so you must verify price arrays manually. AmiBroker adjusts it (e.g.
Professional verifiers add timestamps:
SetTradeDelays(1, 1, 1, 1); // Verified: Buy on next bar's open SetOption("InitialEquity", 100000); SetOption("FuturesMode", False); SetPositionSize(100, spsPercentOfEquity);
Absolute bar numbers vary with padding, QuickAFL, and aligned symbols, causing signals to disappear in backtests.
The code performs calculations exactly as intended without creating accidental mathematical loops.
The AmiBroker AFL Editor includes built-in tools to "prettify" code, which uncovers hidden indentation errors and structural issues in the program flow.