This example displays a line chart of two ordered numerical variables, plotting date against value. It uses D3.js v4 to load CSV data and render an SVG path with a steelblue stroke. The code explicitly configures time-scaled x-axis and linear y-axis, with axis labels for “Numbers” and “Amount.” The visualization is built within a React-style HTML page, embedding d3.csv for data loading and d3.timeParse for date formatting.