This interactive visualization displays daily temperature readings for New York, San Francisco, and Austin across two years, rendered as multi-colored lines on a time-series chart. Users can zoom and pan along the time axis via mouse interactions, while clicking a city’s label toggles its line’s visibility and hovering temporarily grays out non-targeted lines. The code uses D3 v7’s `d3.zoom`, `d3.axisBottom`, and `d3.line` with basis curves, extracting data from a TSV file. React and SVG provide the framework and rendering, with CSS styling for lines and axes.