Mql5 Indicator Patterns

If you're building custom indicators for MetaTrader 5, this covers the stuff that actually breaks in production. It's a collection of battle-tested patterns for OnCalculate functions, buffer management, and display scaling. The troubleshooting table alone is worth it: blank indicator windows (forgot to set scale for small values), drifting calculations (no new bar detection), misaligned plots (wrong warmup math). It's clearly written by someone who debugged these issues the hard way. The self-evolving approach means it gets updated when real problems surface, not just theoretical ones. Best used when you're past the basics and hitting the weird edge cases that MT5 documentation doesn't cover well.