Making a Bar Chart
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This example displays the top 10 most populous countries as a horizontal bar chart, using population figures from a CSV file. The bars are rendered as SVG rectangles, with a linear scale mapping population to bar width and a band scale positioning countries along the vertical axis. The code uses d3.csv, d3.scaleLinear, d3.scaleBand, d3.axisLeft, and d3.axisBottom, with a custom tick formatter that converts values from billions to a readable format. Axis labels and a chart title are added via SVG text elements.
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