d3.arc() Constructs a new arc generator with the default settings.

local.get(node) Returns the value of this local on the specified node. If the node does not define this local, returns the value from the nearest ancestor that defines it. Returns undefined if no ancestor defines this local.

d3.mouse(container) Returns the x and y coordinates of the current event relative to the specified container. The container may be an HTML or SVG container element, such as a G element or an SVG element. The coordinates are returned as a two-element array of numbers [x, y].

quadtree.copy() Returns a copy of the quadtree. All nodes in the returned quadtree are identical copies of the corresponding node in the quadtree; however, any data in the quadtree is shared by reference and not copied.

transition.selection() Returns the selection corresponding to this transition.

d3.geoAiry() d3.geoAiryRaw(beta) Airy’s minimum-error azimuthal projection.

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

d3.geoEckert4() d3.geoEckert4Raw The Eckert IV projection.

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

link.iterations([iterations]) If iterations is specified, sets the number of iterations per application to the specified number and returns this force. If iterations is not specified, returns the current iteration count which defaults to 1. Increasing the number of iterations greatly increases the rigidity of the constraint and is useful for complex structures such as lattices, but also increases the runtime cost to evaluate the force.