{"version":"1.0","type":"rich","title":"heatmap","description":"This heatmap visualizes world population data across countries using a choropleth map. The map renders SVG paths for each country, with fill patterns representing population thresholds. It uses D3.js v4 for data loading and map generation, specifically `d3.geoMercator` for projection and `d3.scaleThreshold` to map population ranges to distinct line-texture patterns from the `textures` library. Country boundaries and population data come from external GeoJSON and CSV files fetched via `d3.queue`.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/f1cda43adb314e259c4eed6dd8789184?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}