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Channel Pressure Oscillator
NewFreeClose inside an ATR-scaled adaptive channel, with fades and divergences
Favourites and Admin's Choice analyses are listed in the terminal's indicators window under Analysis Marketplace.
- Language
- QuaScript
- Engine
- Native C++, incremental on live ticks
- Rendering
- Canvas
- Placement
- Own pane
- Settings
- 6
- Plots
- 7
- Lines of code
- 41
- Source
- presets/analysis/momentum/channel_pressure.qs
About
Where the close sits inside an adaptive volatility channel, as pressure from -100 to +100. The channel centre is a Kaufman adaptive average and its half-width is a multiple of ATR, so the reading means the same in quiet and wild markets. Pressure is smoothed into a fast and a slow line; the gap between them is drawn as a gradient histogram. Exhaustion marks fire when the fast line turns back from outside the channel, and pivot divergences between price and pressure are labelled.
What it draws
Own pane · counted from the engine's plot table and the script's draw calls
Series
- Line2 visible · 1 helperFast pressureSlow pressure
- Level3Centre
- Histogram1Pressure gap
- Band fills (render.band calls)1
- Horizontal levels3
Signal marks
No bar marks.
Drawings and chart effects
No drawings; everything is plotted series.
How it runs
From source to the live chart, for this script
- 1Compile
The QuaScript compiler checks the 41-line script (33 lines of code) and lowers it for the native C++ engine. Compile errors point at the exact line and column.
- 2Place
The header sets
overlay = false, so the output gets its own pane under the price with its own scale. - 3Compute
The script runs once per bar, oldest to newest.
- 4Stay live
On the terminal the script keeps one live engine session: a tick rolls the forming bar back to its checkpoint and re-executes only that bar, and new bars are appended, so history is never rerun while the market moves. The live result is identical to a full run.
- 5Render
The results are handed to the chart: series on Canvas.
- 6Tune
6 settings in 3 groups appear in the chart's settings dialog. Changing one reruns the engine with the new value.
Rendering
This script draws on Canvas
The browser's modern GPU API. The chart uploads every line, band and mark of the script as GPU buffers and draws them in one pass, so dense heatmaps and dozens of series stay smooth while you pan and zoom. Without WebGPU support the chart's GPU layer falls back to WebGL 2, then Canvas 2D.
GPU drawing through WebGL 2, available in every current browser. Used for chart-native profiles and for series that ask for it with backend = "webgl". Fast for large numbers of bars and wide fills.
The browser's 2D drawing API. Text-heavy and object-style output (dashboard tables, zones, tags, segments), candle colors and backgrounds are painted by the QuaScript layer, a Canvas 2D surface over the chart. Series use Canvas when the script's header does not ask for a GPU.
- • 7 plotted series
- • 1 band fill call
- • 3 levels
Alerts
2 alert rules declared with alert.rule
Fast pressure turned back from outside the channel
Price made a new pivot that pressure did not confirm
Settings
6 settings, grouped as in the chart's settings dialog
| Setting | Type | Default | Range / options | Id |
|---|---|---|---|---|
| Channel length | Integer | 30 | 5 – 300 | channel_length |
| Channel width (ATR) | Number | 2 | 0.5 – 6, step 0.1 | channel_width_atr |
| Setting | Type | Default | Range / options | Id |
|---|---|---|---|---|
| Fast smoothing | Integer | 5 | 1 – 50 | fast_smoothing |
| Slow smoothing | Integer | 13 | 2 – 100 | slow_smoothing |
| Exhaustion zone | Number | 80 | 40 – 100 | exhaustion_zone |
| Setting | Type | Default | Range / options | Id |
|---|---|---|---|---|
| Divergence pivot bars | Integer | 5 | 2 – 20 | divergence_pivot_bars |
Script
packages/quascript/presets/analysis/momentum/channel_pressure.qs
Header
analysis "Channel Pressure Oscillator" {
overlay = false
}- Total lines
- 41
- Code lines
- 33
- Comment lines
- 7
- Helper functions
- 0
- Loops
- 0
- Persistent variables
- 0
- Higher-interval feeds
- 0
- Engine plots
- 7
Built with
ta.atrta.divergenceta.emata.kaufmanmath.absmath.clampmath.max
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