Making a Bar Chart
This bar chart displays the top 10 most populous countries based on recent COVID-19 case counts, with countries on the y-axis and today’s new cases on the x-axis. The visualization uses D3 v5’s `scaleLinear`, `scaleBand`, `axisLeft`, and `axisBottom` to render an SVG chart with custom tick formatting. Data is loaded asynchronously from a remote API via `d3.json`, and each bar’s length is scaled to the maximum case value. The chart includes axis labels and a title, with axes customized to remove domain lines.