dispatch.copy() Returns a copy of this dispatch object. Changes to this dispatch do not affect the returned copy and vice versa.

d3.stackOrderAscending(series) Returns a series order such that the smallest series (according to the sum of values) is at the bottom.

d3.geoRobinson() d3.geoRobinsonRaw The Robinson projection.

d3.polygonContains(polygon, point) <> Returns true if and only if the specified point is inside the specified polygon.

graticule.lines() Returns an array of GeoJSON LineString geometry objects, one for each meridian or parallel for this graticule.

d3.timeSeconds(start, stop[, step]) d3.utcSeconds(start, stop[, step]) Aliases for timeSecond.range and utcSecond.range.

d3.interpolatePuBuGn(t) d3.schemePuBuGn Given a number t in the range [0,1], returns the corresponding color from the “PuBuGn” sequential color scheme represented as an RGB string.

circle.center([center]) If center is specified, sets the circle center to the specified point [longitude, latitude] in degrees, and returns this circle generator. The center may also be specified as a function; this function will be invoked whenever a circle is generated, being passed any arguments passed to the circle generator. If center is not specified, returns the current center accessor, which defaults to: function center() { return [0, 0]; }

d3.geoLittrow() d3.geoLittrowRaw The Littrow projection is the only conformal retroazimuthal map projection. Typically clipped to the geographic extent [[-90°, -60°], [90°, 60°]].

color.rgb() Returns the RGB equivalent of this color. For RGB colors, that’s this.