This example shows a bar chart of laptop sales by company, using a CSV dataset of 160 records. The visualization encodes each company’s total Quantity_Sold as the height of a steelblue rectangle, with an ordinal x-axis and linear y-axis. It is built with d3.csv, scaleBand, scaleLinear, and axisBottom/axisLeft, rendering to SVG. The chart loads data asynchronously and maps the CSV’s numeric column before drawing the bars.