Correlation_Matrix
This visualization displays a correlation matrix for the Abalone dataset, showing pairwise Pearson correlation coefficients between physical measurements and age. Across the main diagonal, variable names are labeled, while off-diagonal cells use either colored text or circles with varying radius and color intensity to represent correlation strength and direction. The matrix is filtered by selecting a categorical variable (Male, Female, or Infant) from a dropdown menu, which recomputes correlations for that subset. Built with D3 v7 in React, the code uses `d3.scaleLinear` for color encoding, `d3.scalePoint` for axes, and `d3.scaleSqrt` for circle sizing, rendering to SVG.
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