Welcome to the Highcharts JS (highcharts) 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 absolute value of z determines the size of the bubble. This means that with the default zThreshold of 0, a bubble of value -1 will have the same size as a bubble of value 1, while a bubble of value 0 will have a smaller size according to minSize.