Line · Linked category window

Two actual views of one source share only X; each retains its own Y window and tooltip.

Use lines for change over time or another ordered dimension. Keep missing observations as gaps so the chart does not invent continuity.

Each observation has a seriesId and pointId. Ordered x positions and projected geometry belong to the calculation Core; NativeChart consumes the resulting NativeScene.

Choose series colours, titles, axes, grid and legend placement. Floating tooltips are the default; crosshair and docked details are optional.