{"version":"1.0","type":"rich","title":"Heatmap","description":"A heatmap displays the value of a product across five countries, with each cell color-coded by the numeric value. The visualization uses a threshold color scale to map values into three colors, while missing data appears as blank cells. The code loads data from a CSV file and renders the heatmap as SVG rectangles using d3.csv, d3.scale.ordinal, d3.svg.axis, and d3.scale.threshold.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/7f54771a42eb45ae905c185ed0275583?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}