Line
A line series joins a single value per bar — usually the close — into one continuous polyline. It is the cleanest way to show a trend or to plot a derived series such as a moving average.
Live demo
Setup
Add a LineSeries and feed it { time, value } points:
const series = chart.addSeries(SSChart.LineSeries, {
color: '#4a9eff',
lineWidth: 2,
});
series.setData(candles.map(c => ({ time: c.time, value: c.close })));
chart.timeScale().fitContent();
Any single-value dataset works here — swap c.close for an indicator value to overlay it on the price chart.