d3-apportionment

d3-apportionment is a simple D3.js plugin to ensures that an array of numbers, when rounded down, sum to 100 (or some other arbitrary number) whilst retaining the original element order. Implementation of the "Largest Remainder" method (the Hare-Niemeyer method).

Usage

d3.apportion(input, total)

• input must be an array of numbers.
• total defaults to 100 if not omitted.

d3.apportion([49.1, 24.9, 12.5, 12.4]); // [50, 25, 13, 12]
d3.apportion([24.9, 12.5, 12.4], 50);   // [25, 13, 12]