{"version":"1.0","type":"rich","title":"D3 - Time Series HeatMap","description":"This example visualizes methane emissions across countries and years using a D3.js heatmap. Each cell’s color encodes emission values via `d3.scaleSequential` with the Viridis interpolator, while `d3.scaleBand` positions countries on the x-axis and years on the y-axis. The code loads CSV data from a GitHub gist, renders axes with `d3.axisBottom` and `d3.axisLeft`, and includes an interactive tooltip that displays exact CH4 values on mouseover. A horizontal color legend, built with the d3-legend library, accompanies the SVG chart.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/6a9c7df5fb8b4caab57f273d13f44e20?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}