This visualization presents a multivariate comparison of the numeric fields in the iris dataset, using a scatterplot matrix to show pairwise relationships among sepal length, sepal width, petal length, and petal width. The three iris species are distinguished by color, with histograms on the diagonal showing each variable’s distribution. Built with D3 v7, the visualization uses `d3.brush` to enable interactive selection across plots, updating the displayed data points dynamically. The SVG rendering includes axis labels and tick marks generated via `d3.axisBottom` and `d3.axisLeft`.