This visualization displays a correlation matrix for physical measurements of abalone, filtered by sex using buttons for Female, Male, and Infant. The matrix uses a color scale from white to a sex-specific hue to encode Pearson correlation coefficients between eight attributes, including length, weights, and rings. The example loads data from a CSV file, filters rows by the selected sex, computes correlations with d3 functions, and renders the grid as SVG rectangles using d3.v7.