Line Chart with Multiple Lines
This line chart displays one week of temperature data for cities worldwide, sourced from Data Canvas - Sense Your City. The visualization uses D3 v5 to render SVG paths, with smooth curves generated by the `curveBasis` line generator. A color legend maps each city to a distinct category color, while the chart's nested data structure sorts cities by their final recorded temperature. The temperature values are measured in degrees Celsius across a time series.