Let's make a bar chart
This example shows a horizontal bar chart of the top 10 most populous countries, using population data from a CSV file. The chart displays the countries in descending order of population, with each bar’s length scaled linearly and the y-axis arranged as a band scale. The code uses d3.csv, d3.scaleLinear, d3.scaleBand, d3.axisLeft, and d3.axisBottom, rendering to SVG within a React app. It also formats tick labels with d3.format and uses a margin convention for layout.