{"version":"1.0","type":"rich","title":"Day / Hour Heatmap","description":"This heatmap visualizes concurrent user sessions over time, with days on the y-axis (1–7) and hours on the x-axis (1–24), colored by activity intensity. Built with D3 v3 and rendered as SVG, it supports animated transitions between two datasets via a toggle, using a diverging color scale to highlight high- and low-usage periods. The example is inspired by Trulia Trends and demonstrates how a compact grid layout can reveal daily and hourly usage patterns, such as peak session activity during mid-afternoon and lower overnight usage. Two TSV datasets are provided to compare different usage distributions, and the chart updates smoothly when switching between them.","provider_name":"VizHub AI Studio","provider_url":"https://next.vizhub.com","html":"<iframe src=\"https://next.vizhub.com/viz/gist-993eef597300dd1a79478dd7e6c54285?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"1\"></iframe>","width":960,"height":500,"cache_age":3600}