d3.curveMonotoneX(context)

d3.stackOrderDescending(series) Returns a series order such that the largest series (according to the sum of values) is at the

d3.symbolCircle The circle symbol type.

d3.symbolSquare The square symbol type.

radialLine.defined([defined]) Equivalent to

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

d3.curveCardinalOpen(context)

radialArea.curve([curve]) Equivalent to area

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

radialLine(data) Equivalent to line.