Line
Displays one or more aligned indexed series. A single public entry point handles both single- and multi-line data. Selection always refers to a source X index shared by all series. In compact mode, user interaction selects the middle source index represented by a bucket; programmatic source selection highlights the bucket containing that index.
When data changes and keeps the number of points and series, the line morphs from its previous shape; changes to either count redraw immediately. Use LiveLineChart for a continuously updating window that slides as new points arrive.
interactionEnabled disables all user controls and returns dense data to the fit view, but programmatic selection still renders.
subtitle appears below the title and stays visible while a value is selected.
At least one series of at least two finite values is required. Negative values are supported. Series must have equal lengths. Categories may be empty; otherwise their count must match the values in each series. Invalid data renders validation errors in place of the chart.