Playing around with the idea of a bump chart comparison with two overlapping areas. Based on Farmers Markets data from data.gov.
Another iteration with step interpolation instead of cardinal.
forked from susielu's block: Overlapping Bump Chart
https://d3js.org/d3.v4.js
https://cdnjs.cloudflare.com/ajax/libs/d3-legend/2.9.0/d3-legend.min.js