{"version":"1.0","type":"rich","title":"Multiple Line plot with Dropdown","description":"This visualization displays multiple line plots of London's monthly air quality data, allowing users to select different pollutants (like PM2.5 or PM10) from a dropdown menu. Each line represents a year from 2010 to 2018, with a color legend mapping years to distinct shades. The D3 v5 code uses `scaleTime` for the x-axis, `scaleLinear` for the y-axis, and `nest` to group data by year before generating paths with the `line` generator. The dropdown menu is built via a custom `dropdownMenu` component that triggers re-rendering with the newly selected column. Data originates from the Kings College London Air Quality Dataset via the London Datastore.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/c5f6cc5177a2497a9b921995b681eb38?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}