# Welcome to the Highcharts Gantt JS (gantt) 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.series.findNearestPointBy

Determines whether the series should look for the nearest point in both dimensions or just the x-dimension when hovering the series. Defaults to `'xy'` for scatter series and `'x'` for most other series. If the data has duplicate x-values, it is recommended to set this to `'xy'` to allow hovering over all points.

Applies only to series types using nearest neighbor search (not direct hover) for tooltip.