Fix #717: Corrected PCA sign flip and updated test compatibility for …#1158
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Fix #717: Corrected PCA sign flip and updated test compatibility for …#1158mariam851 wants to merge 2 commits intorasbt:masterfrom
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Hi @rasbt,
I've fixed issue #717 regarding the sign flip in plot_pca_correlation_graph. The correlation matrix now correctly aligns with feature variance.
Key Changes:
Logic: Inverted correlation signs to ensure consistent direction (e.g., positive correlations for Iris features).
Compatibility: Fixed a TypeError in test_pca_corr_graph.py related to Python 3.12 version comparison.
Formatting: Cleaned up both files with isort and flake8.
update: I've implemented the fix and ensured that my contributed files are properly formatted. However, the Linting CI is failing due to existing formatting issues in external files (adjust_text.py, association_rules.py, etc.) which seem to require a different version of black/isort than the one available in my environment. I've focused the changes on the PCA issue to keep the PR clean."