Fork of Scatter Plot with Iris DataSet
This example visualizes the classic Iris dataset as a scatter plot, mapping petal length and width to circle positions while coloring points by species (setosa, versicolor, virginica) using hardcoded red, blue, and green markers. The SVG rendering relies on D3 v6 APIs including `scaleLinear`, `extent`, `axisLeft`, `axisBottom`, and `selectAll().join()`. Data is loaded as CSV from a GitHub gist, with numeric parsing for all four flower measurements. The chart uses a full-window responsive layout, and the code also passes sepal dimensions as unused `rx` and `ry` attributes.