{"version":"1.0","type":"rich","title":"Multiple Line plot with Dropdown","description":"This visualization displays monthly air quality measurements for PM2.5 and PM10 particulates in London from 2010 to 2018, using a dropdown menu to switch between different pollutant metrics. Multiple colored lines represent individual years, with a color legend distinguishing each annual series. The SVG chart uses d3.scaleTime, d3.scaleLinear, d3.nest, and d3.line with curveBasis to render the paths, while d3-transition animates updates. Data comes from the Kings College London Air Quality Dataset via the London Datastore, loaded as CSV using d3.csv.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/b1bbc17853fb4d2f84722499bf2a5e7f?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}