{"version":"1.0","type":"rich","title":"Pie chart RDW With help from Laurens","description":"This example shows a pie chart of parking data from the RDW open data API, visualizing the distribution of start dates by year. The code loads JSON data via `fetch`, filters it to the first four characters of the `startdataarea` field, counts occurrences per year, and renders the chart using D3.js v6’s `d3.pie`, `d3.arc`, and `d3.scaleOrdinal`. The SVG is centered on the page, with each slice labeled by year and colored using the category10 scheme.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/436fcb4b08b54c6fbc4f5461a30ae0a6?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}