color.darker([k]) Returns a darker copy of this color. If k is specified, it controls how much darker the returned color should be. If k is not specified, it defaults to 1. The behavior of this method is dependent on the implementing color space.

d3.geoSatellite() d3.geoSatelliteRaw(P, omega) The satellite (tilted perspective) projection.

d3.geoEquirectangular() d3.geoEquirectangularRaw The equirectangular (plate carrée) projection.

d3.curveStepBefore(context) Produces a piecewise constant function (a step function) consisting of alternating horizontal and vertical lines. The y-value changes before the x-value.

hammer.coefficient([coefficient]) Defaults to 2.

d3.interpolateRound(a, b) Returns an interpolator between the two numbers a and b; the interpolator is similar to interpolateNumber, except it will round the resulting value to the nearest integer.

threshold.domain([domain]) If domain is specified, sets the scale’s domain to the specified array of values. The values must be in sorted ascending order, or the behavior of the scale is undefined. The values are typically numbers, but any naturally ordered values (such as strings) will work; a threshold scale can be used to encode any type that is ordered. If the number of values in the scale’s range is N+1, the number of values in the scale’s domain must be N. If there are fewer than N ele

transition.transition() Returns a new transition on the same selected elements as this transition, scheduled to start when this transition ends. The new transition inherits a reference time equal to this transition’s time plus its delay and duration. The new transition also inherits this transition’s name, duration, and easing. This method can be used to schedule a sequence of chained transitions. For example: d3.selectAll(".apple") .transition() // First fade to green. .style("fill",

transform.invertY(y) Returns the inverse transformation of the specified y-coordinate, (y - ty) / k.

area.curve([curve]) If curve is specified, sets the curve factory and returns this area generator. If curve is not specified, returns the current curve factory, which defaults to curveLinear.