projection.clipAngle([angle]) If angle is specified, sets the projection’s clipping circle radius to the specified angle in degrees and returns the projection. If angle is null, switches to antimeridian cutting rather than small-circle clipping. If angle is not specified, returns the current clip angle which defaults to null. Small-circle clipping is independent of viewport clipping via projection.clipExtent.

d3.treemapBinary(node, x0, y0, x1, y1) Recursively partitions the specified nodes into an approximately-balanced binary tree, choosing horizontal partitioning for wide rectangles and vertical partitioning for tall rectangles.

d3.schemeSet2 An array of eight categorical colors represented as RGB hexadecimal strings.

d3.csvParse(string[, row]) Equivalent to dsvFormat(",").parse.

d3.easeCircle(t) d3.easeCircleInOut(t) Symmetric circular easing; scales circleIn for t in [0, 0.5] and circleOut for t in [0.5, 1].

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

gingery.lobes([lobes]) Defaults to 6.

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

selection.property(name[, value]) Some HTML elements have special properties that are not addressable using attributes or styles, such as a form field’s text value and a checkbox’s checked boolean. Use this method to get or set these properties. If a value is specified, sets the property with the specified name to the specified value on selected elements. If the value is a constant, then all elements are given the same property value; otherwise, if the value is a function, then the function

path.arcTo(x1, y1, x2, y2, radius) Draws a circular arc segment with the specified radius that starts tangent to the line between the current point and the specified point ⟨x1, y1⟩ and ends tangent to the line between the specified points ⟨x1, y1⟩ and ⟨x2, y2⟩. If the first tangent point is not equal to the current point, a straight line is drawn between the current point and the first tangent point. Equivalent to context.arcTo and uses SVG’s elliptical arc curve commands.