d3.axisTop(scale) Constructs a new top-oriented axis generator for the given scale, with empty tick arguments, a tick size of 6 and padding of 3. In this orientation, ticks are drawn above the horizontal domain path.

d3.active(node[, name]) Returns the active transition on the specified node with the specified name, if any. If no name is specified, null is used. Returns null if there is no such active transition on the specified node. This method is useful for creating chained transitions. For example, to initiate disco mode: d3.selectAll("circle").transition() .delay(function(d, i) { return i * 50; }) .on("start", function repeat() { d3.active(this) .style("fill", "red")

d3.axisBottom(scale) Constructs a new bottom-oriented axis generator for the given scale, with empty tick arguments, a tick size of 6 and padding of 3. In this orientation, ticks are drawn below the horizontal domain path.

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

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

d3.ascending(a, b) Returns -1 if a is less than b, or 1 if a is greater than b, or 0. This is the comparator function for natural order, and can be used in conjunction with the built-in array.sort method to arrange elements in ascending order. It is implemented as: function ascending(a, b) { return a < b ? -1 : a > b ? 1 : a >= b ? 0 : NaN; } Note that if no comparator function is specified to the built-in sort method, the default order is lexicographic (alphabetical), not natural!

curve.point(x, y) Indicates a new point in the current line segment with the given x- and y-values.

curve.lineStart() Indicates the start of a new line segment. Zero or more points will follow.

cylindricalStereographic.parallel([parallel]) Defaults to 0°.

cylindricalEqualArea.parallel([parallel]) Defaults to approximately 38.58°, fitting the world in a 960×500 rectangle.