Welcome to the Highcharts Stock JS (highstock) Options Reference

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

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When this is true, the series will not cause the Y axis to cross the zero plane (or threshold option) unless the data actually crosses the plane.

For example, if softThreshold is false, a series of 0, 1, 2, 3 will make the Y axis show negative values according to the minPadding option. If softThreshold is true, the Y axis starts at 0.