radialArea.defined([defined]) Equivalent to

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

area.x([x]) If x is specified, sets x0

symbol.context([context]) If context is specified, sets the context and returns this symbol generator. If context

radialArea.endAngle([angle]) Equivalent to area

d3.curveCardinal(context)

radialArea.radius([radius]) Equivalent to area

arc.innerRadius([radius]) If radius is specified, sets the inner radius to the specified function or number

symbol(arguments…) Generates a symbol for the given arguments. The arguments are arbitrary; they are simply

radialArea.startAngle([angle]) Equivalent to area