This example visualizes infrastructure indicators by plotting each data point as a circle, with the year on the x-axis, the indicator type on the y-axis, and the color encoding the numeric value. Tooltips reveal the exact values on hover. The visualization is built using the Vega-Lite API, which registers Vega and Vega-Lite libraries to render the chart as SVG. Data is loaded asynchronously from a CSV file using d3.csv, and the chart’s styling and axis labels are customized through a configuration object. The visualization automatically fits the full browser window.