This example shows a week of temperature in San Francisco, plotted as a smooth line chart using D3.js. The visualization displays temperature data on the y-axis against time on the x-axis, with labeled axes and gridlines. The code uses D3's `scaleLinear`, `axisBottom`, `axisLeft`, `line`, and `curveBasis` functions to render the SVG. Data comes from a CSV file and the Data Canvas project, with an animated rendering approach.