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Last edited Mar 13, 2020

Created on Mar 13, 2020

This example visualizes the movement of COVID-19 case counts over time for a selected country, with a dropdown menu to switch between confirmed cases, deaths, and recoveries. It shows a single line chart with a time-based x-axis and a linear y-axis, colored by the selected metric. The visualization uses D3 v5 with SVG rendering, loading data from a CSV file and aggregating entries by country and date. It employs `d3.nest`, `d3.scaleTime`, `d3.scaleLinear`, `d3.axisBottom`, `d3.axisLeft`, and `d3.line` with a basis curve.

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