d3.symbolSquare The square symbol type.

d3.curveBundle(context)

radialArea.curve([curve]) Equivalent to area

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

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

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

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

radialLine(data) Equivalent to line.

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

pie.endAngle([angle]) If angle is specified, sets the overall end angle of the pie to the specified function