{"version":"1.0","type":"rich","title":"Accidents on the Road - Choropleth","description":"This choropleth map visualizes road accident data across Russian regions, coloring each region according to a normalized value using a per-region threshold scale with custom color domains. The visualization includes city markers and a legend, with tooltips showing regional names and values on hover. Built with D3 v3, it uses `d3.geo.albers` projection, `d3.geo.path`, and TopoJSON to render geographic boundaries, while data from a CSV file drives the color assignments via `d3.scale.threshold`. The map also handles missing region data by mapping certain administrative codes to equivalent values.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/bffd79948d8f419e91fe036434b8433b?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}