{"version":"1.0","type":"rich","title":"Choropleth Map Assignment #9","description":"This choropleth map shows U.S. population by state for 2023, with each state filled according to its population using a sequential blue color scale. The map renders state boundaries as SVG paths via `d3.geoPath` with a `geoAlbersUsa` projection, and loads TopoJSON state geometries from the us-atlas package. Population values from a CSV file are joined to state features using a state code mapping, with `d3.scaleQuantize` mapping population ranges to `d3.schemeBlues[9]`. States lacking data render in gray.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/939ca5180b234829bd933922ac151be3?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}