{"version":"1.0","type":"rich","title":"Interactive Color Legend with EdX Viewer Data","description":"A scatterplot shows the relationship between active days and video plays for EdX platform users, with each circle's color indicating a course. Hovering over the color legend filters the visualization to display only data points from that selected course while dimming others. The chart uses React with hooks, D3 scales via `d3.scaleLinear` and `d3.scaleOrdinal`, and SVG rendering. Data comes from a CSV of the MITx-HarvardX 2013 academic year dataset.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/d9130a55b5cb4e39a126627c3ae5f069?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}