{"version":"1.0","type":"rich","title":"csv fetching csv file and reading columns","description":"This example demonstrates how to fetch a CSV file and read its columns using D3 v6. The visualization shows the structure of hierarchical data by applying the `d3.csv` method to load `data.csv`, which contains child–parent relationships. The code uses `d3.stratify()` to convert the tabular data into a hierarchical root node, with column names dynamically retrieved via the `d.columns` array. The resulting hierarchy is logged to the console but not rendered visually, focusing purely on data preparation and parsing.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/247177d574244dd8ab62c3dd9704828e?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}