JS API Reference

Welcome to the Highcharts Stock JS (highstock) Options Reference

These pages outline the chart configuration options, and the methods and properties of Highcharts objects.

Feel free to search this API through the search bar or the navigation tree in the sidebar.

plotOptions.trendline

Trendline (linear regression) fits a straight line to the selected data using a method called the Sum Of Least Squares. This series requires the linkedTo option to be set.

Configuration options for the series are given in three levels:

  1. Options for all series in a chart are defined in the plotOptions.series object.
  2. Options for all trendline series are defined in plotOptions.trendline.
  3. Options for one single series are given in the series instance array.
Highcharts.chart('container', {
    plotOptions: {
        series: {
            // general options for all series
        },
        trendline: {
            // shared options for all trendline series
        }
    },
    series: [{
        // specific options for this series instance
        type: 'trendline'
    }]
});

TypeScript:

  • the type option must always be set.
  • when accessing an array of series, the combined set of all series types is represented by Highcharts.SeriesOptionsType . Narrowing down to the specific type can be done by checking the type property.
if (chart.options.series?.[0]?.type === trendline) {
    // code specific to the trendline series
}

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Highcharts Stock v12.3.0 - Generated from branch master (commit ade4907f7b), on Sat Jun 21 2025 08:10:02 GMT+0200 (Central European Summer Time)