OPEN-SOURCE SCRIPT
Order Flow Delta Proxy (Tick-Rule)

This indicator approximates buy-side versus sell-side trading pressure, commonly referred to as order flow delta or cumulative volume delta, using a tick-rule method applied to lower-timeframe price data. True bid and ask tick data is not available for most index and cash market symbols on this platform, so this script provides a volume-based directional approximation instead.
How it works:
For each bar on the chart, the script pulls a configurable lower-timeframe series of closes and volumes using request.security_lower_tf(). Each lower-timeframe close is compared to the prior lower-timeframe close: if price ticked up, that portion of volume is classified as buy-side; if price ticked down, it is classified as sell-side; unchanged ticks are split evenly, following standard tick-rule convention. These classified volumes are summed per chart bar to produce a per-bar delta value, plotted as a histogram, alongside a running cumulative delta line. If lower-timeframe data is unavailable, the script falls back to a close-position-within-range volume split as an approximation.
Notes and limitations:
This is a volume-based directional proxy, not real bid or ask order flow data. The currently forming bar's values can update intrabar as new lower-timeframe data arrives, which is expected behavior for any real-time order-flow style tool; once a bar closes, its value is fixed. This script does not generate trade signals and does not guarantee profitability. It is intended as a supplementary analytical tool and should be used alongside sound risk management. Past patterns in delta do not guarantee future price behavior.
How it works:
For each bar on the chart, the script pulls a configurable lower-timeframe series of closes and volumes using request.security_lower_tf(). Each lower-timeframe close is compared to the prior lower-timeframe close: if price ticked up, that portion of volume is classified as buy-side; if price ticked down, it is classified as sell-side; unchanged ticks are split evenly, following standard tick-rule convention. These classified volumes are summed per chart bar to produce a per-bar delta value, plotted as a histogram, alongside a running cumulative delta line. If lower-timeframe data is unavailable, the script falls back to a close-position-within-range volume split as an approximation.
Notes and limitations:
This is a volume-based directional proxy, not real bid or ask order flow data. The currently forming bar's values can update intrabar as new lower-timeframe data arrives, which is expected behavior for any real-time order-flow style tool; once a bar closes, its value is fixed. This script does not generate trade signals and does not guarantee profitability. It is intended as a supplementary analytical tool and should be used alongside sound risk management. Past patterns in delta do not guarantee future price behavior.
Script de código abierto
Fiel al espíritu de TradingView, el creador de este script lo ha convertido en código abierto, para que los traders puedan revisar y verificar su funcionalidad. ¡Enhorabuena al autor! Aunque puede utilizarlo de forma gratuita, recuerde que cualquier republicación del código está sujeta a nuestras Normas internas.
Exención de responsabilidad
La información y las publicaciones no constituyen, ni deben considerarse como, asesoramiento o recomendaciones financieras, de inversión, de trading u otro tipo, proporcionadas o respaldadas por TradingView. Obtenga más información en Condiciones de uso.
Script de código abierto
Fiel al espíritu de TradingView, el creador de este script lo ha convertido en código abierto, para que los traders puedan revisar y verificar su funcionalidad. ¡Enhorabuena al autor! Aunque puede utilizarlo de forma gratuita, recuerde que cualquier republicación del código está sujeta a nuestras Normas internas.
Exención de responsabilidad
La información y las publicaciones no constituyen, ni deben considerarse como, asesoramiento o recomendaciones financieras, de inversión, de trading u otro tipo, proporcionadas o respaldadas por TradingView. Obtenga más información en Condiciones de uso.