Connection mark displays each data item as a curve that connects two points. The mark can be used to display structural variation and interactions, for example.
Still under development
Connection mark does not currently support details on demand (tooltips). Also, the parameterization is likely to be changed a bit to support more use cases.
In addition to the standard position channels and
opacity channels, connection mark supports the following channels:
y2are equal or left undefined, the connections are rendered as arcs. The height channel specifies their heights.
Stroke width of the starting point in pixels.
Stroke width of the end point in pixels. Same as
sizeif left undefined.
Color of the end point. Same as
colorif left undefined.
Number of segments in the bézier curve. Affects the rendering quality and speed.
y2 channels are unequal, the height is ignored and only the
x-axis is zoomed.