PROTECTED SOURCE SCRIPT

Delta Histogram - OnlyFlow

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This script plots a histogram of delta proxies (approximations of buying vs. selling pressure) using available chart data. Because TradingView does not provide bid/ask tape data, delta is estimated with several selectable methods:

Uptick/Down-tick (proxy): volume signed by close direction.

Body-weighted Volume: weights volume by candle body relative to its range.

VWAP-slope Volume: signs volume by changes in the typical price (HLC3).

Features

Cumulative or per-bar mode: reset daily or by custom session hours.

Normalization options: Z-score, percentile scaling, or raw values; with percentile clipping for stable colors and axis scaling.

Visualization: color-coded positive/negative bars, optional zero line and ± bands, adjustable opacity scaling.

Readout Panel: shows the latest delta values and their normalized equivalents on the chart edge.

Alerts: triggers when normalized delta exceeds positive or negative thresholds, highlighting potential spikes in pressure.

Usage
Switch between delta modes to explore different perspectives on order-flow imbalance. Cumulative mode shows whether pressure builds over a session, while per-bar mode highlights bar-to-bar shifts. Normalization helps identify relative extremes in context rather than raw values.

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