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ritmex-bot/docs/ccxt/examples/ccxt.pro/js/calculate-ohlcvs-from-trades.js
2025-10-03 15:28:16 +08:00

59 lines
2.5 KiB
JavaScript

'use strict';
const ccxt = require ('../../../ccxt');
console.log ('CCXT Version:', ccxt.version)
async function main() {
let ohlcvs = {}
const symbol = 'BTC/USDT'
const exchange = new ccxt.pro.binance ({ 'newUpdates': true })
await exchange.loadMarkets ()
const market = exchange.market (symbol)
const timeframe = '1m'
const duration = exchange.parseTimeframe (timeframe) * 1000
console.log ('Starting', exchange.id, symbol)
while (true) {
try {
const trades = await exchange.watchTrades(symbol)
for (const trade of trades) {
const timestamp = parseInt(trade['timestamp'] / duration) * duration
let candle = exchange.safe_value(ohlcvs, timestamp)
if (candle) {
candle[2] = Math.max(trade['price'], candle[2])
candle[3] = Math.min(trade['price'], candle[3])
candle[4] = trade['price']
candle[5] = exchange.parseNumber(exchange.amountToPrecision(symbol, trade['amount'] + candle[5]))
candle[6] = exchange.parseNumber(exchange.costToPrecision(symbol, trade['cost'] + candle[6]))
} else {
candle = [
timestamp,
trade['price'],
trade['price'],
trade['price'],
trade['price'],
exchange.parseNumber(exchange.amountToPrecision(symbol, trade['amount'])),
exchange.parseNumber(exchange.costToPrecision(symbol, trade['cost'])),
]
}
ohlcvs[timestamp] = candle
}
console.log ('')
console.log (exchange.iso8601 (exchange.milliseconds ()), '------------------------------------------------------')
const values = Object.values (ohlcvs).slice (-1000)
ohlcvs = exchange.indexBy (values, 0)
console.log ('Datetime ', 'Timestamp ', ... [ 'Open', 'High', 'Low', 'Close', market['base'], market['quote'] ].map (x => x.toString ().padEnd (10, ' ')))
for (let i = 0; i < values.length; i++) {
const candle = values[i]
console.log (exchange.iso8601 (candle[0]), ... candle.map (x => x.toString ().padEnd (10, ' ')))
}
} catch (e) {
console.log (e.constructor.name, e.message)
}
}
await exchange.close ()
}
main()