This example shows Nobel Prize laureates from 1901 to 1905 arranged as circles in a grid, with each year as a column and categories color-coded via a legend. The visualization uses D3 v7’s nested `data()` and `join()` methods to bind grouped data to SVG circle elements, with `d3.group` organizing entries by year. Animated transitions highlight updates when data changes. The chart includes rotated x-axis tick labels and a legend built with joined category groups, rendering entirely in SVG.