d3.bisectLeft(array, x[, lo[, hi]]) Returns the insertion point for x in array to maintain

d3.merge(arrays) Merges the specified arrays into a single array. This method is similar to the built-in array concat

d3.median(array[, accessor]) Returns the median of the given array of numbers using the

histogram.value([value]) If value is specified, sets the value accessor to the specified function or constant