line.defined([defined]) If defined is specified, sets the defined accessor to the specified function or boolean

d3.curveBasisClosed(context)

curve.lineStart() Indicates the start of a new line segment. Zero or more

radialLine(data) Equivalent to line.

d3.curveBasisOpen(context)

arc.padAngle([angle]) If angle is specified, sets the pad angle to the specified function or number and returns

d3.stackOffsetExpand(series, order) Applies a zero baseline and normalizes the values for each point such that the topline

radialArea.curve([curve]) Equivalent to area

d3.symbolCross The Greek cross symbol type, with arms of equal length.

d3.pie() Constructs a new pie generator with the default settings.