This bar chart visualizes a static dataset of nine numeric values using SVG rectangles. The example demonstrates how to construct a basic chart with the D3.js v4 library. The code sets the SVG canvas dimensions, calculates bar widths based on the data array length, and uses `d3.select` and `selectAll` to append `rect` elements. Each bar’s height and y-position are derived from the data values, with a `transform` attribute translating each rectangle horizontally. The chart is contained within an HTML page with a light background.