Gist 42777aadd72477bbf523ed2778370383
A line chart plots a train signal's amplitude (x) against time (t), with a thin maroon stroke across a wide 1700-pixel SVG canvas. The data is loaded from a remote CSV via `d3.csv`, and axes are generated using `d3.scaleLinear` and `d3.axisBottom`/`d3.axisLeft`. The path is drawn with `d3.line`, mapping each point's time to the x-scale and amplitude to the y-scale, producing a dense, spiky waveform.