# 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.

# navigation.annotationsOptions.shapes.ry

The radius of the `ellipse` shape in y direction. Can be defined in pixels or yAxis units, if shapes.yAxis index is defined.