project(lambda, phi) Projects the specified point [lambda, phi] in radians, returning a new point [x, y] in unitless coordinates.

d3.curveLinear(context) Produces a polyline through the specified points.

d3.geoPolyhedralButterfly() The gnomonic butterfly projection.

d3.format(specifier) An alias for locale.format on the default locale.

d3.geoStream(object, stream) Streams the specified GeoJSON object to the specified projection stream. While both features and geometry objects are supported as input, the stream interface only describes the geometry, and thus additional feature properties are not visible to streams.

d3.timeMonth d3.utcMonth Months (e.g., February 1, 2012 at 12:00 AM); ranges from 28 to 31 days.

band.rangeRound([range]) Sets the scale’s range to the specified two-element array of numbers while also enabling rounding. This is a convenience method equivalent to: band .range(range) .round(true); Rounding is sometimes useful for avoiding antialiasing artifacts, though also consider the shape-rendering “crispEdges” styles.

d3.easeQuad(t) d3.easeQuadInOut(t) Symmetric quadratic easing; scales quadIn for t in [0, 0.5] and quadOut for t in [0.5, 1]. Also equivalent to poly.exponent(2).

elastic.period(p) Returns a new elastic easing with the specified period p.

pow(value) See continuous.