map.values() Returns an array of values for every entry in this map. The order of the returned values is arbitrary.

curve.areaStart() Indicates the start of a new area segment. Each area segment consists of exactly two line segments: the topline, followed by the baseline, with the baseline points in reverse order.

selection.styles(values[, priority]) A convenience method on top of selection.style for setting multiple style properties. If the specified values is an object, the values may be specified either as strings or functions. For example: selection.styles({fill: "red", stroke: function(d) { return d.stroke; }}); If a value is a constant, all elements are given the same style property value; otherwise, if a value is a function, the function is evaluated for each selected element, in order, being pas

dispatch.call(type[, that[, arguments…]]) Like function.call, invokes each registered callback for the specified type, passing the callback the specified arguments, with that as the this context. See dispatch.apply for more information.

d3.timeYear d3.utcYear Years (e.g., January 1, 2012 at 12:00 AM); ranges from 365 to 366 days.

node.leaves() Returns the array of leaf nodes in traversal order; leaves are nodes with no children.

d3.easeElasticInOut(t) Symmetric elastic easing; scales elasticIn for t in [0, 0.5] and elasticOut for t in [0.5, 1].

d3.easeCubic(t) d3.easeCubicInOut(t) Symmetric cubic easing; scales cubicIn for t in [0, 0.5] and cubicOut for t in [0.5, 1]. Also equivalent to poly.exponent(3).

d3.forceCenter([x, y]) Creates a new centering force with the specified x- and y- coordinates. If x and y are not specified, they default to ⟨0,0⟩.

d3.geoPolyhedralCollignon() The Collignon butterfly projection.