OPEN-SOURCE SCRIPT
Double ATR Reversal

// ════════════════════════════════════════════════════════════════════════════
// DOUBLE ATR REVERSAL — Chandelier-style trailing stop + ATR expansion scanner
// ────────────────────────────────────────────────────────────────────────────
// METHOD
// 1. Trailing stop. A ratcheting stop is computed from the rolling extreme
// (highest src_h or lowest src_l over N bars) offset by a multiple of
// Wilder's ATR. The long stop only ratchets up; the short stop only
// ratchets down. When price crosses the opposite side's stop, the
// trend "flips." This is the same construction as the standard
// Chandelier Exit; the "Double ATR" naming refers to the default
// multiplier of 2.0 (faster reversals than the conventional 3.0).
//
// 2. Reversal events. A bull reversal fires on the bar where the trend
// flips from -1 to +1; a bear reversal on +1 to -1. These are
// point-in-time events, distinct from the persistent trend state.
//
// 3. Volatility expansion overlay. Current ATR is compared to a rolling
// SMA of ATR over `expand_len` bars. A separate signal fires when
// current ATR exceeds expand_mult × baseline. This catches news /
// volatility events that are independent of trend direction and is
// the primary addition over a plain trailing-stop indicator.
//
// SOURCE TOGGLE
// `use_close` selects whether the rolling extremes use closing prices
// (smoother, fewer whipsaws) or wicks (more sensitive to spikes). This
// meaningfully changes signal frequency on noisy instruments and is
// exposed as an input rather than hard-coded.
//
// OUTPUTS
// • Trailing stop line, color-coded by trend state
// • Optional bar coloring by trend
// • Bullish / bearish reversal triangles + optional price-annotated labels
// • Yellow background flash + diamond marker on ATR expansion bars
// • Info table: trend, ATR (absolute and as % of price), trail stop,
// multiplier, and expansion state
// • Four alertconditions: bull reversal, bear reversal, any reversal,
// and volatility expansion — suitable for cross-symbol scanning via
// TradingView alert lists
//
// NOT A STRATEGY: orders, slippage, and returns are not modeled.
// ════════════════════════════════════════════════════════════════════════════
// DOUBLE ATR REVERSAL — Chandelier-style trailing stop + ATR expansion scanner
// ────────────────────────────────────────────────────────────────────────────
// METHOD
// 1. Trailing stop. A ratcheting stop is computed from the rolling extreme
// (highest src_h or lowest src_l over N bars) offset by a multiple of
// Wilder's ATR. The long stop only ratchets up; the short stop only
// ratchets down. When price crosses the opposite side's stop, the
// trend "flips." This is the same construction as the standard
// Chandelier Exit; the "Double ATR" naming refers to the default
// multiplier of 2.0 (faster reversals than the conventional 3.0).
//
// 2. Reversal events. A bull reversal fires on the bar where the trend
// flips from -1 to +1; a bear reversal on +1 to -1. These are
// point-in-time events, distinct from the persistent trend state.
//
// 3. Volatility expansion overlay. Current ATR is compared to a rolling
// SMA of ATR over `expand_len` bars. A separate signal fires when
// current ATR exceeds expand_mult × baseline. This catches news /
// volatility events that are independent of trend direction and is
// the primary addition over a plain trailing-stop indicator.
//
// SOURCE TOGGLE
// `use_close` selects whether the rolling extremes use closing prices
// (smoother, fewer whipsaws) or wicks (more sensitive to spikes). This
// meaningfully changes signal frequency on noisy instruments and is
// exposed as an input rather than hard-coded.
//
// OUTPUTS
// • Trailing stop line, color-coded by trend state
// • Optional bar coloring by trend
// • Bullish / bearish reversal triangles + optional price-annotated labels
// • Yellow background flash + diamond marker on ATR expansion bars
// • Info table: trend, ATR (absolute and as % of price), trail stop,
// multiplier, and expansion state
// • Four alertconditions: bull reversal, bear reversal, any reversal,
// and volatility expansion — suitable for cross-symbol scanning via
// TradingView alert lists
//
// NOT A STRATEGY: orders, slippage, and returns are not modeled.
// ════════════════════════════════════════════════════════════════════════════
Skrip sumber terbuka
Dalam semangat TradingView sebenar, pencipta skrip ini telah menjadikannya sumber terbuka, jadi pedagang boleh menilai dan mengesahkan kefungsiannya. Terima kasih kepada penulis! Walaupuan anda boleh menggunakan secara percuma, ingat bahawa penerbitan semula kod ini tertakluk kepada Peraturan Dalaman.
Penafian
Maklumat dan penerbitan adalah tidak bertujuan, dan tidak membentuk, nasihat atau cadangan kewangan, pelaburan, dagangan atau jenis lain yang diberikan atau disahkan oleh TradingView. Baca lebih dalam Terma Penggunaan.
Skrip sumber terbuka
Dalam semangat TradingView sebenar, pencipta skrip ini telah menjadikannya sumber terbuka, jadi pedagang boleh menilai dan mengesahkan kefungsiannya. Terima kasih kepada penulis! Walaupuan anda boleh menggunakan secara percuma, ingat bahawa penerbitan semula kod ini tertakluk kepada Peraturan Dalaman.
Penafian
Maklumat dan penerbitan adalah tidak bertujuan, dan tidak membentuk, nasihat atau cadangan kewangan, pelaburan, dagangan atau jenis lain yang diberikan atau disahkan oleh TradingView. Baca lebih dalam Terma Penggunaan.