This example shows a simple line chart that visualizes a randomly generated dataset of thirty points, with each point’s y-value incrementing by a random offset from the previous point. The chart displays the overall trend of the series, with a final value label and x-axis tick labels for each data index. The code uses D3 v3 to append an SVG, create linear scales for the x and y axes, and draw the line via `d3.svg.line()`. The data is generated inline using JavaScript’s `Math.random()` within a `d3.range()` map, and the chart is rendered as an SVG path with a black stroke.