This interactive scatter plot visualizes the Iris dataset, showing petal length against sepal length for different Iris species. The visualization uses distinct shapes (circles, squares, and triangles) to differentiate species, with a dedicated shape legend positioned on the right side of the chart. Built with D3.js v7, the code employs `d3.scaleLinear` for axes scaling and `d3.scaleOrdinal` with `d3.symbolsFill` to map species categories to symbol types. Data is loaded asynchronously from a GitHub-hosted CSV file, with axes labeled and styled through custom `d3.axisLeft` and `d3.axisBottom` calls.