Multi-Timeframe Support / Resistance Lines
# Multi-Timeframe Support / Resistance Lines (Auto S/R Lines) — Release Notes
**Indicator name**: 多周期支撑压力线 SR (Multi-Timeframe S/R Lines)
**Version**: Pine Script v6 · overlay indicator · `max_bars_back=500`, limits: 120 lines / 120 labels / 60 boxes
**File**: `scripts/draw_kline_srlines.pine`
**Origin**: ported line-by-line from `scripts/draw_kline_srlines.mjs` (V7 Auto S/R Lines); the algorithm is aligned with the JS version
## 1. Features
Automatically detects and plots support / resistance levels on the main chart, with strength scoring, grade-based coloring, a level info table, and breakout alerts. Core capabilities:
1. **Candidate detection**
- Swing highs / lows: pivots confirmed by `Swing Window` bars on each side;
- Recent supplement: the last 30 bars are scanned again with window = 2; candidates with `quality < 0.35` are discarded;
- Rejection candidates: non-pivot bars whose same-side wick ratio (wick / bar range) and wick depth (in ATR multiples) both meet the thresholds.
2. **Side split**: by default levels are split by price relative to the latest close (above = resistance, below = support); optionally split by swing type.
3. **Clustering**: greedy merging in ascending price order, tolerance = `max(global floor, point ATR × multiplier, cluster ATR × multiplier)`; cluster center and cluster ATR are the median of members; clusters with fewer members than `Min Touches` are dropped.
4. **Scoring and grading**
- Strength = touches 25% + rejection 20% + reaction 15% + reversal 15% + volume 5% + breakout-retest 10% + swing quality 10%;
- Display score = `(1 - distance weight) × strength + distance weight × distance score` (the closer, the higher); level selection always uses the display score;
- Grades: 极强 (extreme) ≥ strong threshold + 20, 强 (strong) ≥ strong threshold, 一般 (medium) ≥ strong threshold − 20, otherwise 弱 (weak); each grade can be colored separately.
5. **Multi-timeframe (main addition of this release)**
- Data source: Current TF / Daily / 4H / 1H / 15m / **MTF Merge**;
- Higher timeframes always use `request.security(..., lookahead=barmerge.lookahead_off)`: only closed HTF bars are taken, so nothing repaints; each HTF bar is enqueued only once;
- MTF merge: each timeframe runs the full detection once, then results are clustered across timeframes by the cross-TF price tolerance; a price confirmed by N timeframes gets strength `+(N − 1) × confluence bonus`, touches are summed, and recency takes the most recent one;
- A timeframe lower than the chart timeframe is unavailable (Pine cannot request lower TFs) — it is skipped automatically and reported in the info table; a timeframe with fewer than 30 bars of data is skipped and reported the same way.
6. **Drawing and output**: horizontal line + right-side label (timeframe · rank · grade · direction), optional zone background band, configurable left/right extension in bars, line width and style; the top-right info table lists timeframe / direction / price / strength / touches / grade / distance %, and its last row shows the data source, candidate count, cluster count, level count, and current price.
7. **Alerts**: when enabled, a close crossing above or below any level triggers `alert()` (`freq_once_per_bar`); the message contains direction, price, and grade.
> Differences from the JS version (caused by Pine, not logic changes): JS draws static levels once at run time, while Pine recomputes on every bar over the same trailing window, so levels roll forward with the market; grouping / timeframe visibility belong to the drawing-object API and have no Pine equivalent; breakout notification is replaced by `alert()`.
## 2. Parameters
### Detection
| Parameter (CLI equivalent) | Default | Range | Description |
|---|---|---|---|
| Lookback bars `--bars` | 250 | 30–1000 | Last N bars taken from each participating timeframe |
| Swing window `--window` | 5 | 2–20 | Bars on each side confirming a swing pivot |
| ATR length `--atr-len` | 14 | 2–100 | SMA period of TR, used by all ATR-based thresholds |
| Cluster zone half-width ATR multiplier `--atr-mult` | 0.50 | 0.01–3 | Defines zone width and clustering tolerance |
| Reaction lookahead `--reaction-bars` | 12 | 2–60 | Window for measuring displacement after a touch |
| Reversal lookahead `--rev-bars` | 24 | 4–120 | Window used by the reversal score |
| Reversal full-score ATR multiplier `--rev-atr` | 6.0 | 0.5–20 | Displacement reaching this ATR multiple scores full marks |
| Recency decay days `--recency-days` | 0 (auto = window span / 3) | 0–365 | Affects the relevance score; 0 means auto |
### Timeframe
| Parameter | Default | Description |
|---|---|---|
| Data source | Current TF | Current TF / Daily / 4H / 1H / 15m / MTF Merge |
| MTF: include current TF | on | Only used when "MTF Merge" is selected |
| MTF: Daily | on | Same as above |
| MTF: 4H | on | Same as above |
| MTF: 1H | off | Same as above |
| MTF: 15m | off | Same as above |
| Cross-TF merge price tolerance % | 0.5 (0.05–5) | Levels from different TFs within this price difference are treated as one |
| Confluence bonus per extra TF | 10 (0–30) | Strength bonus for multi-timeframe confluence |
### Candidates / Rejection
| Parameter (CLI equivalent) | Default | Range | Description |
|---|---|---|---|
| Enable rejection candidates `--rejections` | on | — | When off, only swing pivots are used |
| Same-side wick / range ratio `--rej-wick` | 0.40 | 0.05–0.95 | Upper/lower wick share of the bar range threshold |
| Min wick depth in ATR `--rej-atr` | 0.30 | 0.01–3 | Absolute wick depth threshold |
| Rejection zone half-width ATR `--rej-half` | 0.25 | 0.05–2 | Half-width of the band used to compute the rejection rate |
| Rejection Bayesian prior samples `--rej-prior` | 5 | 0–50 | Small-sample smoothing; 0 disables it |
### Scoring
| Parameter (CLI equivalent) | Default | Range | Description |
|---|---|---|---|
| Touch score curve `--touch-curve` | u | u / mono | Inverted-U (best around 3 touches) or monotonic |
| Inverted-U peak `--touch-peak` | 3 | 1–7 | Only applies to the "u" curve |
| Wick weight in SwingQuality `--wick-weight` | 0.5 | 0–1 | Share of the wick term inside swing quality |
| Wick full-score ratio `--wick-full` | 0.6 | 0.05–1 | Wick ratio reaching this value scores full marks |
| Breakout ATR threshold `--breakout-atr` | 0.50 | 0.01–5 | Displacement threshold for a breakout |
| Retest zone ATR `--retest-atr` | 0.35 | 0.01–5 | Retest tolerance band |
| Strong grade threshold `--strong-score` | 60 | 0–100 | Threshold for "strong" and above; also drives all four grades |
| Min valid touches `--min-touches` | 2 | 1–10 | Clusters below this count are dropped |
| Only strong and above `--only-strong` | off | — | Filters out levels below the strong threshold |
### Selection / Display
| Parameter (CLI equivalent) | Default | Range | Description |
|---|---|---|---|
| Max levels per side `--max` | 6 | 1–20 | Cap for the resistance side and the support side separately |
| Min distance from price % `--near` | 0.15 | 0–5 | Drops levels **closer** to the current price than this (same as the JS version; removes hugging noise) |
| Near-neighbor dedup % `--merge-near` | 0.10 | 0–5 | Levels within this price difference are deduped by relevance |
| Distance weight in display score `--dist-weight` | 0.4 | 0–1 | Higher values favor levels near the current price |
| Ranking order `--rank-by` | dist | dist / rel / str / off | Display score / relevance / strength / no numbering; selection always uses the display score |
| Side by swing type `--side-by-swing` | off | — | When on, swing highs count as resistance and lows as support |
| Draw zone background band | off | — | Draws a translucent band of half-width ATR × multiplier |
| Left extension bars | 60 | 0–500 | Left endpoint of the line relative to the current bar |
| Right extension bars | 50 | 0–500 | Right endpoint of the line relative to the current bar |
| Line width | 1 | 1–4 | — |
| Line style | dashed | solid / dotted / dashed | — |
| Use a single color `--color` | off | — | When on, all levels use the unified color and grade colors are ignored |
| Unified color | `#FF3B30` | — | — |
| Extreme / strong color | `#FF3B30` | — | — |
| Medium color | `#4CAF50` | — | — |
| Weak color | `#FF9500` | — | — |
| Show level info table | on | — | 7-column table at the top right |
### Alerts
| Parameter | Default | Description |
|---|---|---|
| Alert on level breakout | off | Fires when the close crosses a level up or down, at most once per bar; the message includes timeframe, direction, price, and grade |
## 3. Tips and Caveats
- **Timeframe choice**: on a daily chart, use "Current TF + Daily" or "MTF Merge (current + daily + 4H)"; on low timeframe charts (e.g. 15m) only 1H / 4H / D are available, while on a daily chart 4H / 1H / 15m are skipped automatically and marked "unavailable" in the info table.
- **History length**: each timeframe needs at least 30 bars to participate; if the chart history is too short, that timeframe is skipped and reported as "only N bars".
- **Performance**: computation and drawing run only on the last bar (`barstate.islast`); cost grows with lookback length and the number of timeframes — keep `Lookback bars ≤ 300` and 2–3 MTF slots.
- **Tuning**: too many lines → raise `Min valid touches` / `Strong grade threshold` or lower `Max levels per side`; lines too far away → raise `Distance weight in display score`; too much hugging noise → raise `Min distance from price %`.
**Indicator name**: 多周期支撑压力线 SR (Multi-Timeframe S/R Lines)
**Version**: Pine Script v6 · overlay indicator · `max_bars_back=500`, limits: 120 lines / 120 labels / 60 boxes
**File**: `scripts/draw_kline_srlines.pine`
**Origin**: ported line-by-line from `scripts/draw_kline_srlines.mjs` (V7 Auto S/R Lines); the algorithm is aligned with the JS version
## 1. Features
Automatically detects and plots support / resistance levels on the main chart, with strength scoring, grade-based coloring, a level info table, and breakout alerts. Core capabilities:
1. **Candidate detection**
- Swing highs / lows: pivots confirmed by `Swing Window` bars on each side;
- Recent supplement: the last 30 bars are scanned again with window = 2; candidates with `quality < 0.35` are discarded;
- Rejection candidates: non-pivot bars whose same-side wick ratio (wick / bar range) and wick depth (in ATR multiples) both meet the thresholds.
2. **Side split**: by default levels are split by price relative to the latest close (above = resistance, below = support); optionally split by swing type.
3. **Clustering**: greedy merging in ascending price order, tolerance = `max(global floor, point ATR × multiplier, cluster ATR × multiplier)`; cluster center and cluster ATR are the median of members; clusters with fewer members than `Min Touches` are dropped.
4. **Scoring and grading**
- Strength = touches 25% + rejection 20% + reaction 15% + reversal 15% + volume 5% + breakout-retest 10% + swing quality 10%;
- Display score = `(1 - distance weight) × strength + distance weight × distance score` (the closer, the higher); level selection always uses the display score;
- Grades: 极强 (extreme) ≥ strong threshold + 20, 强 (strong) ≥ strong threshold, 一般 (medium) ≥ strong threshold − 20, otherwise 弱 (weak); each grade can be colored separately.
5. **Multi-timeframe (main addition of this release)**
- Data source: Current TF / Daily / 4H / 1H / 15m / **MTF Merge**;
- Higher timeframes always use `request.security(..., lookahead=barmerge.lookahead_off)`: only closed HTF bars are taken, so nothing repaints; each HTF bar is enqueued only once;
- MTF merge: each timeframe runs the full detection once, then results are clustered across timeframes by the cross-TF price tolerance; a price confirmed by N timeframes gets strength `+(N − 1) × confluence bonus`, touches are summed, and recency takes the most recent one;
- A timeframe lower than the chart timeframe is unavailable (Pine cannot request lower TFs) — it is skipped automatically and reported in the info table; a timeframe with fewer than 30 bars of data is skipped and reported the same way.
6. **Drawing and output**: horizontal line + right-side label (timeframe · rank · grade · direction), optional zone background band, configurable left/right extension in bars, line width and style; the top-right info table lists timeframe / direction / price / strength / touches / grade / distance %, and its last row shows the data source, candidate count, cluster count, level count, and current price.
7. **Alerts**: when enabled, a close crossing above or below any level triggers `alert()` (`freq_once_per_bar`); the message contains direction, price, and grade.
> Differences from the JS version (caused by Pine, not logic changes): JS draws static levels once at run time, while Pine recomputes on every bar over the same trailing window, so levels roll forward with the market; grouping / timeframe visibility belong to the drawing-object API and have no Pine equivalent; breakout notification is replaced by `alert()`.
## 2. Parameters
### Detection
| Parameter (CLI equivalent) | Default | Range | Description |
|---|---|---|---|
| Lookback bars `--bars` | 250 | 30–1000 | Last N bars taken from each participating timeframe |
| Swing window `--window` | 5 | 2–20 | Bars on each side confirming a swing pivot |
| ATR length `--atr-len` | 14 | 2–100 | SMA period of TR, used by all ATR-based thresholds |
| Cluster zone half-width ATR multiplier `--atr-mult` | 0.50 | 0.01–3 | Defines zone width and clustering tolerance |
| Reaction lookahead `--reaction-bars` | 12 | 2–60 | Window for measuring displacement after a touch |
| Reversal lookahead `--rev-bars` | 24 | 4–120 | Window used by the reversal score |
| Reversal full-score ATR multiplier `--rev-atr` | 6.0 | 0.5–20 | Displacement reaching this ATR multiple scores full marks |
| Recency decay days `--recency-days` | 0 (auto = window span / 3) | 0–365 | Affects the relevance score; 0 means auto |
### Timeframe
| Parameter | Default | Description |
|---|---|---|
| Data source | Current TF | Current TF / Daily / 4H / 1H / 15m / MTF Merge |
| MTF: include current TF | on | Only used when "MTF Merge" is selected |
| MTF: Daily | on | Same as above |
| MTF: 4H | on | Same as above |
| MTF: 1H | off | Same as above |
| MTF: 15m | off | Same as above |
| Cross-TF merge price tolerance % | 0.5 (0.05–5) | Levels from different TFs within this price difference are treated as one |
| Confluence bonus per extra TF | 10 (0–30) | Strength bonus for multi-timeframe confluence |
### Candidates / Rejection
| Parameter (CLI equivalent) | Default | Range | Description |
|---|---|---|---|
| Enable rejection candidates `--rejections` | on | — | When off, only swing pivots are used |
| Same-side wick / range ratio `--rej-wick` | 0.40 | 0.05–0.95 | Upper/lower wick share of the bar range threshold |
| Min wick depth in ATR `--rej-atr` | 0.30 | 0.01–3 | Absolute wick depth threshold |
| Rejection zone half-width ATR `--rej-half` | 0.25 | 0.05–2 | Half-width of the band used to compute the rejection rate |
| Rejection Bayesian prior samples `--rej-prior` | 5 | 0–50 | Small-sample smoothing; 0 disables it |
### Scoring
| Parameter (CLI equivalent) | Default | Range | Description |
|---|---|---|---|
| Touch score curve `--touch-curve` | u | u / mono | Inverted-U (best around 3 touches) or monotonic |
| Inverted-U peak `--touch-peak` | 3 | 1–7 | Only applies to the "u" curve |
| Wick weight in SwingQuality `--wick-weight` | 0.5 | 0–1 | Share of the wick term inside swing quality |
| Wick full-score ratio `--wick-full` | 0.6 | 0.05–1 | Wick ratio reaching this value scores full marks |
| Breakout ATR threshold `--breakout-atr` | 0.50 | 0.01–5 | Displacement threshold for a breakout |
| Retest zone ATR `--retest-atr` | 0.35 | 0.01–5 | Retest tolerance band |
| Strong grade threshold `--strong-score` | 60 | 0–100 | Threshold for "strong" and above; also drives all four grades |
| Min valid touches `--min-touches` | 2 | 1–10 | Clusters below this count are dropped |
| Only strong and above `--only-strong` | off | — | Filters out levels below the strong threshold |
### Selection / Display
| Parameter (CLI equivalent) | Default | Range | Description |
|---|---|---|---|
| Max levels per side `--max` | 6 | 1–20 | Cap for the resistance side and the support side separately |
| Min distance from price % `--near` | 0.15 | 0–5 | Drops levels **closer** to the current price than this (same as the JS version; removes hugging noise) |
| Near-neighbor dedup % `--merge-near` | 0.10 | 0–5 | Levels within this price difference are deduped by relevance |
| Distance weight in display score `--dist-weight` | 0.4 | 0–1 | Higher values favor levels near the current price |
| Ranking order `--rank-by` | dist | dist / rel / str / off | Display score / relevance / strength / no numbering; selection always uses the display score |
| Side by swing type `--side-by-swing` | off | — | When on, swing highs count as resistance and lows as support |
| Draw zone background band | off | — | Draws a translucent band of half-width ATR × multiplier |
| Left extension bars | 60 | 0–500 | Left endpoint of the line relative to the current bar |
| Right extension bars | 50 | 0–500 | Right endpoint of the line relative to the current bar |
| Line width | 1 | 1–4 | — |
| Line style | dashed | solid / dotted / dashed | — |
| Use a single color `--color` | off | — | When on, all levels use the unified color and grade colors are ignored |
| Unified color | `#FF3B30` | — | — |
| Extreme / strong color | `#FF3B30` | — | — |
| Medium color | `#4CAF50` | — | — |
| Weak color | `#FF9500` | — | — |
| Show level info table | on | — | 7-column table at the top right |
### Alerts
| Parameter | Default | Description |
|---|---|---|
| Alert on level breakout | off | Fires when the close crosses a level up or down, at most once per bar; the message includes timeframe, direction, price, and grade |
## 3. Tips and Caveats
- **Timeframe choice**: on a daily chart, use "Current TF + Daily" or "MTF Merge (current + daily + 4H)"; on low timeframe charts (e.g. 15m) only 1H / 4H / D are available, while on a daily chart 4H / 1H / 15m are skipped automatically and marked "unavailable" in the info table.
- **History length**: each timeframe needs at least 30 bars to participate; if the chart history is too short, that timeframe is skipped and reported as "only N bars".
- **Performance**: computation and drawing run only on the last bar (`barstate.islast`); cost grows with lookback length and the number of timeframes — keep `Lookback bars ≤ 300` and 2–3 MTF slots.
- **Tuning**: too many lines → raise `Min valid touches` / `Strong grade threshold` or lower `Max levels per side`; lines too far away → raise `Distance weight in display score`; too much hugging noise → raise `Min distance from price %`.
כתב ויתור
המידע והפרסומים אינם מיועדים להיות, ואינם מהווים, ייעוץ או המלצה פיננסית, השקעתית, מסחרית או מכל סוג אחר המסופקת או מאושרת על ידי TradingView. קרא עוד ב־תנאי השימוש.
כתב ויתור
המידע והפרסומים אינם מיועדים להיות, ואינם מהווים, ייעוץ או המלצה פיננסית, השקעתית, מסחרית או מכל סוג אחר המסופקת או מאושרת על ידי TradingView. קרא עוד ב־תנאי השימוש.