A horizontal bar chart ranks ICONCLASS codes of depth 3 by their frequency of occurrence in the AIDS poster dataset, with bar width proportional to the count. The bars are color-coded by the first digit of the code, grouping them into ten top-level categories such as Religion, Nature, and Humans. Built with D3.js and rendered as SVG, the visualization reads data from a local CSV file, sorts the rows by count, and uses `d3.svg.axis` for the top-oriented count axis. A legend maps category numbers to colors, and hover tooltips show the exact count, code, and textual description for each bar.