汇总
This interactive dashboard presents U.S. influenza surveillance data from the CDC’s ILINet dataset, combining four linked panels: a yearly line chart, a choropleth map of state averages, a ranked bar chart of top states, and a state-conditional line chart. Users can select years and states to highlight across views, with hover interactions revealing tooltips. The visualization is built with React and D3 v5, using `d3.scaleBand`, `d3.scaleLinear`, `d3.scaleOrdinal`, `d3.scaleSequential`, `geoAlbersUsa` for map projection, and `d3.csv` for data loading, rendering all marks as SVG.