Function createBarSession

Creates a new Volume Profile calculation session based on OHLC candles.

A bar-based volume profile analyses price and volume data from candlesticks to identify areas of significant trading activity. It helps visualize where the majority of trading occurred within a given time period.

Example

import * as ta from 'chart-patterns';

// Create a volume profile session with default settings
const session = ta.VolumeProfile.createBarSession();

// Create a session with custom settings
const customSession = ta.VolumeProfile.createBarSession({
  valueAreaRowSize: 24,
  valueAreaVolume: 0.7,
  pricePrecision: 2
});

// Process candles
for (const candle of candles) {
  session.processCandle(candle);
}

// Get value area
const valueArea = session.getValueArea();
// Result: { VAH: 36488.2, VAL: 35613.1, POC: 36439.58, EQ: 35613.1, low: 34446.3, high: 36779.9 }

// Get full volume distribution including buy/sell volume per level
const distribution = session.getVolumeDistribution();

// Reset the session
session.reset();
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