This visualization displays a scatter plot of the Iris dataset, mapping sepal length on the x-axis and petal length on the y-axis. Each point is rendered as a distinct symbol shape representing the species of iris flower. The chart uses D3.js v7 with `scaleLinear` for the axes, `scaleOrdinal` with `symbolsFill` for shape encoding, and a custom legend showing the species symbols. Data is loaded as CSV and parsed with `csvParse` before being plotted.