bundle.beta(beta) Returns a bundle curve with the specified beta in the range [0, 1], representing the bundle

d3.stackOrderNone(series) Returns the given series order [0, 1, … n - 1] where n is the number of elements

line.curve([curve]) If curve is specified, sets the curve

radialLine.radius([radius]) Equivalent to line

area(data) Generates an area for the given array of data. Depending on this area generator’s associated

radialArea.outerRadius([radius]) Equivalent to

area.x0([x]) If x is specified, sets the x0 accessor to the specified function or number and returns this area

area.curve([curve]) If curve is specified, sets the curve

curve.areaStart() Indicates the start of a new area segment. Each area segment consists of exactly two

d3.symbolStar The pentagonal star (pentagram) symbol type.