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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The padding between nodes in a sankey diagram or dependency wheel, in pixels. For sankey charts, this applies to the nodes of the same column, so vertical distance by default, or horizontal distance in an inverted (vertical) sankey.

If the number of nodes is so great that it is impossible to lay them out within the plot area with the given nodePadding, they will be rendered with a smaller padding as a strategy to avoid overflow.