{"version":"1.0","type":"rich","title":"분기별 유동인구, 매출","description":"An interactive bar chart comparing quarterly foot traffic and sales across Seoul districts. A dropdown menu, generated from the data fields using a data join, lets viewers switch the y-axis variable, triggering a selection change that updates both the bar positions and the d3.axisLeft scale. The visualization loads survey data via d3.json, prepares nested aggregates with d3.nest and d3.mean, and renders the dynamic bars with SVG rectangles, applying the general update pattern to adjust attributes in place.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/72c571e2c4af492f9f940b7d97809961?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}