This visualization shows the correlation matrix for the Abalone dataset, split into three separate views by gender (Male, Female, Infant) via a dropdown selector. It displays the pairwise Pearson correlations between eight physical measurements (length, diameter, height, weight variables, and rings). Each cell is colored using a chroma color scale from red through white to steelblue, with values ranging from -1 to the maximum correlation. The tooltip on hover reveals the exact correlation value. Built with D3.js, the code utilizes `jz.arr.correlationMatrix` for calculations and `data2grid.grid` for layout.