This example shows a line chart of temperature over time for one week in San Francisco, using data from the Data Canvas Sense Your City dataset. A smooth natural curve connects the data points, with styled axes and labeled tick marks. The visualization is built with React and D3 v5, using d3.scaleTime, d3.scaleLinear, d3.line, and d3.curveNatural to compute the path, while SVG renders the marks and axes. The code omits visible data point circles, leaving only the stylized stroke, and includes an embedded tutorial video in the README.