Diagonal Interest Zones Scanner

This indicator automatically scans and plots diagonal (slanted) interest zones – dynamic trend-parallel channels that identify statistically validated support/resistance levels within a trending price structure. It detects the strongest "bounce" zones where price has repeatedly respected slanted lines without breaking for a specified hold period, ideal for trending markets.
How It Works (Technical Methodology)

Trend Channel Detection
The script calculates a linear trend slope from a user-defined anchor point (start of lookback or fixed date) to the current close.


Range is determined by finding the maximum deviation above/below this trend line over the lookback period.
This creates a "channel envelope" capturing the full price oscillation around the trend.
Data can be sourced from current or higher timeframe for structural alignment.


Stable Update Mechanism
To prevent flickering on live bars:


Full recalculation (scanning + slope) occurs only after user-defined "Update Frequency" bars close (default 50).
All calculated values (slope, channel bottom, levels, scores) are "snapshotted" and frozen until next confirmed update.
Drawing uses these stable snapshots, ensuring zones remain fixed during real-time price movement.


Auto Mode Scanning
When enabled:


Scans the channel height in percentage steps (default 1.0%).
Each candidate creates a thin diagonal zone (thickness % of price, default 0.04%) parallel to the trend.
Counts valid "hits": Price touches zone and holds (no break) for user-defined bars (default 10).
Break source: "Close" (strict) or "Wick" (sensitive).
Direction assumed by close relative to zone center (support/resistance).



Level Selection and Filtering


Ranks by hit count, applies minimum distance (% of channel height) to avoid overlap.
Limits to max zones (default 9), sorted low to high.
Manual mode alternative: Directly uses input percentages (e.g., 0, 50, 100 for channel bottom/mid/top).


Diagonal Zone Construction


Zones are drawn as filled diagonal bands using two parallel lines (top/bottom) with linefill.
Thickness is volatility-adjusted (% of current price).
Optional extension far into future or limited projection.
Colors: Supply (above price, default light gray), Demand (below price, default cyan) – updates live but positions stay stable.


Dashboard and Visuals


Table shows current price at each zone (stable during bar), % level, hit count (green if high).
Update countdown displayed for transparency.

How to Use
Perfect for trending markets – identifies dynamic, parallel support/resistance zones that move with price structure.

High hit counts: Strong diagonal zones – expect bounces or acceleration on retest.
Update Frequency: Higher values (100+) for very stable long-term channels; lower for adaptive intraday.
Validation Bars: Increase for stricter zones (fewer false positives).
Multi-Timeframe: Use higher TF input for major trend channels on lower charts.
Supply Zones (Diagonal above price): Dynamic resistance – potential shorts or profit targets.
Demand Zones (Diagonal below price): Dynamic support – potential longs or trailing stops.
Manual Mode: Quick plotting of fixed % (e.g., channel median, quartiles).
Confluence: Combine with horizontal levels, volume, or order flow for entries.

Zones remain visually stable (no repainting during bar) thanks to snapshot logic – reliable for live trading decisions.
Disclaimer
This indicator is a technical analysis tool and should be used in conjunction with other forms of analysis. Past performance does not guarantee future results. Always use proper risk management.