Quasimodo (QML) Pattern [Kodexius]Quasimodo (QML) Pattern is a market structure indicator that automatically detects Bullish and Bearish Quasimodo formations using confirmed swing pivots, then visualizes the full structure directly on the chart. The script focuses on the classic liquidity-grab narrative of the QML: a sweep beyond a prior swing (the Head) followed by a decisive market structure break (MSB), leaving behind a clearly defined reaction zone between the Left Shoulder and the Head.
Detection is built on pivot highs and lows, so patterns are evaluated only after swing points are validated. Once a valid 4 pivot sequence is identified, the indicator draws the pattern legs, highlights the internal triangle area to emphasize the grab, marks the MSB leg, and projects a QML zone that can be used as a potential area of interest for retests.
This tool is designed for traders who work with structure, liquidity concepts, and reversal/continuation triggers, and who want a clean, repeatable QML visualization without manually marking swings.
🔹 Features
🔸 Confirmed Pivot Based Structure Mapping
The script uses classic built-in pivot logic to detect swing highs and swing lows.
🔸 Automatic Bullish and Bearish QML Detection
The indicator evaluates the most recent 4 pivots and checks for a valid alternating sequence (High-Low-High-Low or Low-High-Low-High). When the sequence matches QML requirements, the script classifies the setup as bullish or bearish:
Bullish logic (structure reversal up):
- Left Shoulder is a pivot Low
- Head is a lower Low than the Left Shoulder (liquidity sweep)
- MSB pivot exceeds the Reaction pivot
Bearish logic (structure reversal down):
- Left Shoulder is a pivot High
- Head is a higher High than the Left Shoulder (liquidity sweep)
- MSB pivot breaks below the Reaction pivot
🔸 Full Pattern Visualization (Legs + Highlighted Core)
When a pattern triggers, the script draws:
Three main legs: Left Shoulder to Reaction, Reaction to Head, Head to MSB
A shaded triangular highlight over the internal structure to make the liquidity-grab shape easy to spot at a glance
🔸 QML Zone Projection
A QML Zone box is drawn using the price range defined between the Left Shoulder and the Head, then extended to the right to remain visible as price develops. This zone is intended to act as a practical reference area for potential retests and reaction planning after MSB confirmation.
🔸 MSB Emphasis
A dotted MSB line is drawn between the Reaction point and the MSB point to visually emphasize the confirmation leg that completes the pattern logic.
🔸 Clean Point Tagging and Directional Labeling
Key points are labeled directly on the chart:
- “LS” at the Left Shoulder
- “Head” at the sweep pivot
- “MSB” at the break pivot
A directional label (“Bullish QML” or “Bearish QML”) is also printed to quickly identify the detected bias.
🔸 Configurable Visual Style
All main visual components are user configurable:
- Bullish and bearish colors
- Line width
- Label size
🔸 Efficient Update Logic
Pattern checks are only performed when a new pivot is confirmed, avoiding unnecessary repeated calculations on every bar. The most recent pattern’s projected elements (zone and label positioning) are updated as new bars print to keep the latest setup readable.
🔹 Calculations
This section summarizes the core logic used for detection and plotting.
1. Pivot Detection (Swing Highs and Lows)
The script relies on confirmed pivots using the user inputs:
Left Bars: how many bars must exist to the left of the pivot
Right Bars: how many bars must exist to the right to confirm it
float ph = ta.pivothigh(leftLen, rightLen)
float pl = ta.pivotlow(leftLen, rightLen)
When a pivot is confirmed, its true bar index is the pivot bar, not the current bar, so the script stores:
bar_index
2. Pivot Storage and History Window
Each pivot is stored as a structured object containing:
- price
- index
- isHigh (true for pivot high, false for pivot low)
A rolling history is maintained (up to 50 pivots) to keep processing stable and memory usage controlled.
3. Sequence Validation (Alternation Check)
The pattern evaluation always uses the latest 4 pivots:
p0: Left Shoulder candidate
p1: Reaction candidate
p2: Head candidate
p3: MSB candidate
Before checking bullish/bearish rules, the script enforces alternating pivot types:
bool correctSequence =
(p0.isHigh != p1.isHigh) and
(p1.isHigh != p2.isHigh) and
(p2.isHigh != p3.isHigh)
This prevents invalid structures like consecutive highs or consecutive lows from being interpreted as QML.
4. Bullish QML Conditions
A bullish QML is evaluated when the Left Shoulder is a Low:
Head must be lower than Left Shoulder (sweep)
MSB must be higher than Reaction (break)
if not p0.isHigh
if p2.price < p0.price and p3.price > p1.price
// Bullish QML confirmed
Interpretation:
p2 < p0 represents the liquidity grab below the prior swing low
p3 > p1 represents the market structure break above the reaction high
5. Bearish QML Conditions
A bearish QML is evaluated when the Left Shoulder is a High:
Head must be higher than Left Shoulder (sweep)
MSB must be lower than Reaction (break)
if p0.isHigh
if p2.price > p0.price and p3.price < p1.price
// Bearish QML confirmed
Interpretation:
p2 > p0 represents the liquidity grab above the prior swing high
p3 < p1 represents the market structure break below the reaction low
6. Drawing Logic (Structure, Highlight, Zone, Labels)
When confirmed, the script draws:
Three connecting legs (LS to Reaction, Reaction to Head, Head to MSB)
A shaded triangle using a transparent “ghost” line to enable filling
A dotted MSB emphasis line between Reaction and MSB
A QML Zone box spanning the LS to Head price range and projecting to the right
Point labels: LS, Head, MSB
A direction label: “Bullish QML” or “Bearish QML”
7. Latest Pattern Extension
To keep the newest setup readable, the script updates the most recently detected pattern by extending its projected elements as new bars print:
QML zone right edge is pushed forward
The main label x position is pushed forward
This keeps the last identified QML zone visible as price evolves, without having to redraw historical patterns on every bar.
Headandshouldersformation
Pro Trading Art - Head And ShouldersHow the Script Works:
1. The script identifies potential Head and Shoulders patterns by searching for specific pivot highs and pivot lows in the price data.
2. It checks for the presence of a left shoulder, head, and right shoulder based on the conditions defined in the script.
3. If a valid Head and Shoulders pattern is found, the script plots lines and labels on the chart to visualize the pattern.
4. The script also identifies Inverted Head and Shoulders patterns using similar logic but with different conditions.
5. It plots lines and labels for the Inverted Head and Shoulders pattern.
6. The script generates short and long conditions based on the patterns. Short conditions trigger when the close price crosses below the neck level of a Head and Shoulders pattern, while long conditions trigger when the close price crosses above the neck level of an Inverted Head and Shoulders pattern.
7. It plots sell and buy signal shapes on the chart when the short and long conditions are met, respectively.
8. The script can also trigger alerts to notify the user when a valid Head and Shoulders or Inverted Head and Shoulders pattern is detected.
9. The script provides visual cues on the chart to help users identify potential trading opportunities.
10. The logic and parameters of the script can be modified by the user to customize the behavior and adapt it to different trading strategies.
How Users Can Make Profit Using This Script:
1. Identify potential short-selling opportunities: When a valid Head and Shoulders pattern is detected and a short condition is met, it indicates a potential trend reversal. Traders can consider opening short positions to profit from a downward price movement.
2. Identify potential long-buying opportunities: When a valid Inverted Head and Shoulders pattern is detected and a long condition is met, it suggests a potential trend reversal. Traders can consider opening long positions to profit from an upward price movement.
3. Combine with additional analysis: Users can utilize this script as a tool in their overall trading strategy. They can combine the signals generated by the script with other technical indicators, fundamental analysis, or market sentiment to make more informed trading decisions.
4. Define appropriate entry and exit points: Traders can use the lines and labels plotted by the script to determine entry and exit points for their trades. For example, they may choose to enter a short position after the price crosses below the neck level and exit when the price reaches a predetermined target or when the pattern is invalidated.
5. Set risk management measures: It is important for users to implement proper risk management strategies when trading based on the script's signals. They should define stop-loss orders to limit potential losses if the trade goes against them and consider setting profit targets to secure profits when the trade moves in their favor.
Pivot Pattern Boundaries [cajole]
This script automatically detects horizontal support / resistance levels based on user-programmable criteria.
For example, you can detect boundaries with >3 touches within 200 days, allowing a tolerance of 1/4*ATR.
"Touches" are defined from pivots on the chart. The best way to search for larger/smaller patterns is to increase/decrease the pivot size.*
Future versions will allow "exceptions (i.e. keep drawing the horizontal line even if it is breached once or twice).
*TradingView's Pine script defines a Pivot as the highest point in a group. So, entering "2" means that a day's high needs to be above 2 days before and after (xxYxx) to be considered a high pivot.
This script can be an aid in drawing multiple patterns with horizontal boundaries (rectangles, triangles, head and shoulders, cup & handles, VCPs). I have intentionally avoided trying to code detection of the "other side" of these patterns, as that is where the craft of charting becomes an art.
