{"version":"1.0","type":"rich","title":"D3 circle barchart with nested data() and join()","description":"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.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/0e761fff24cd4c3e82ae52111a441caf?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}