TestsTp4
The visualization presents weekly flu-like illness rates across 12 French regions for 2014, encoded as an animated streamgraph built with D3 v4. Each region is a colored band whose vertical thickness at any point reflects the number of reported cases that week, with the x-axis spanning the full year from January to December. A play button steps through the 52 weekly snapshots, and as the animation progresses, the bands grow, peak during the winter months, and recede—making the seasonal surge and regional variation immediately visible. A legend identifies regions, and the animation highlights the temporal dynamics of the epidemic curve. The data comes from the GrippeFrance2014.csv file (sourced from a gist by HectorDt), and the chart is rendered under the MIT license.