{"version":"1.0","type":"rich","title":"Fork of Multiple Line plot with Dropdown","description":"This visualization displays monthly average air quality measurements for London, comparing PM2.5 and PM10 particulate levels across different years from 2010 to 2018. A dropdown menu lets users switch which pollutant is plotted on the y-axis, with each year rendered as a separate colored line using a time-based x-axis. Built with D3 v5, the code uses `scaleTime` and `scaleLinear` for axes, `nest` for grouping data by year, and `transition().duration(1500)` for animated line updates. The data comes from the Kings College London Air Quality Dataset in the London Datastore.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/ed6f75284f2445f09554f3b8f6ad8892?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}