d3.timeHour d3.utcHour Hours (e.g., 01:00 AM); 60 minutes. Note that advancing time by one hour in local time can return the same hour or skip an hour due to daylight saving.

ordinal(value) Given a value in the input domain, returns the corresponding value in the output range. If the given value is not in the scale’s domain, returns the unknown; or, if the unknown value is implicit (the default), then the value is implicitly added to the domain and the next-available value in the range is assigned to value, such that this and subsequent invocations of the scale given the same input value return the same output value.

d3.customEvent(event, listener[, that[, arguments]]) Invokes the specified listener, using the specified that this context and passing the specified arguments, if any. During the invocation, d3.event is set to the specified event; after the listener returns (or throws an error), d3.event is restored to its previous value. In addition, sets event.sourceEvent to the prior value of d3.event, allowing custom events to retain a reference to the originating native event. Returns the value returned

d3.bisectLeft(array, x[, lo[, hi]]) Returns the insertion point for x in array to maintain sorted order. The arguments lo and hi may be used to specify a subset of the array which should be considered; by default the entire array is used. If x is already present in array, the insertion point will be before (to the left of) any existing entries. The return value is suitable for use as the first argument to splice assuming that array is already sorted. The returned insertion point i partitions

ribbon(arguments…) Generates a ribbon for the given arguments. The arguments are arbitrary; they are simply propagated to the ribbon generator’s accessor functions along with the this object. For example, with the default settings, a chord object expected: var ribbon = d3.ribbon(); ribbon({ source: {startAngle: 0.7524114, endAngle: 1.1212972, radius: 240}, target: {startAngle: 1.8617078, endAngle: 1.9842927, radius: 240} }); // "M164.0162810494058,-175.21032946354026A240,240,0,0,1,216.1

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

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

log.tickFormat([count[, specifier]]) Like continuous.tickFormat, but customized for a log scale. The specified count typically has the same value as the count that is used to generate the tick values. If there are too many ticks, the formatter may return the empty string for some of the tick labels; however, note that the ticks are still shown. To disable filtering, specify a count of Infinity. When specifying a count, you may also provide a format specifier or format function. For example,

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

nest.sortKeys(comparator) Sorts key values for the current key using the specified comparator function, such as d3.ascending or d3.descending. If no comparator is specified for the current key, the order in which keys will be returned is undefined. For example, to sort years in ascending order and varieties in descending order: var entries = d3.nest() .key(function(d) { return d.year; }).sortKeys(d3.ascending) .key(function(d) { return d.variety; }).sortKeys(d3.descending) .entri