d3.interval(callback[, delay[, time]]) Like timer, except the callback is invoked only every delay milliseconds; if delay is not specified, this is equivalent to timer. A suitable replacement for setInterval that is guaranteed to not run in the background. The callback is passed the elapsed time.

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.

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

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

axis.tickSize([size]) If size is specified, sets the inner and outer tick size to the specified value and returns the axis. If size is not specified, returns the current inner tick size, which defaults to 6.

d3.geoGringorten() d3.geoGringortenRaw The Gringorten square equal-area projection, rearranged to give each hemisphere an entire square.

time.interpolate(interpolate) See continuous.interpolate.

request.timeout([timeout]) If timeout is specified, sets the timeout attribute of the request to the specified number of milliseconds and returns this request instance. If timeout is not specified, returns the current response timeout, which defaults to 0.