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docs/ccxt/examples/js/basic-chart.js

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+
+
+import ccxt from '../../js/ccxt.js';
+import asciichart from 'asciichart';
+import asTable from 'as-table';
+import ololog from 'ololog'
+import ansicolor from 'ansicolor';
+
+const log = ololog.configure ({ locate: false })
+
+ansicolor.nice
+
+//-----------------------------------------------------------------------------
+
+;(async function main () {
+
+    // experimental, not yet implemented for all exchanges
+    // your contributions are welcome ;)
+
+    const index = 4 // [ timestamp, open, high, low, close, volume ]
+    const ohlcv = await new ccxt.okcoin ().fetchOHLCV ('BTC/USD', '15m')
+    const lastPrice = ohlcv[ohlcv.length - 1][index] // closing price
+    const series = ohlcv.map (x => x[index])         // closing price
+    const bitcoinRate = ('₿ = $' + lastPrice).green
+    const chart = asciichart.plot (series, { height: 15, padding: '            ' })
+    log.yellow ("\n" + chart, bitcoinRate, "\n")
+    process.exit ()
+
+}) ()