This example visualizes the Iris Dataset as a scatter plot, mapping petal width to the x-axis and sepal length to the y-axis while encoding species through symbol shapes and colors (grey, coral, and aqua). The chart uses reusable D3.js components, including scaleLinear, scaleOrdinal, axisLeft, axisBottom, and the symbol generator, to render SVG marks. Data is loaded via d3.csv and parsed into numeric values before being passed to the customizable scatterPlot function.