This example plots two data series from a tab-separated TSV file as scatterplots and line charts. The visualization uses D3 v7 to load the data via `d3.tsv`, apply linear scales with `d3.scaleLinear`, and render green and blue circles for the `y1` and `y2` columns. Red and cyan lines, generated with `d3.line`, connect the points of each series, mapping shared x-values to the same horizontal axis.