Feel free to search this API through the search bar or the navigation tree in the sidebar.
If categories are present for the xAxis, names are used instead of numbers for that axis.
Since Highcharts 3.0, categories can also
be extracted by giving each point a name and setting
axis type to
category. However, if you have multiple
series, best practice remains defining the
categories: ['Apples', 'Bananas', 'Oranges']