Each series within a chart can be in several states. These states are represented by the numbers that are enumerated in the list below:
Series is not hovered and not selected (normal state);
Series is hovered;
Series is selected;
Series is hovered and selected.
You can also use the isHovered() and isSelected() series methods to check whether a series is hovered or selected.
Returns the tag of the series.
When defining a series, you can specify auxiliary information for it via the tag option. You can specify auxiliary information for each point as well. To do this, add a tag field to the data source and specify the name of the field via the series tagField option.
Returns the type of the series.
To learn about different series types, refer to the Series help section.