Fig. 7 | Scientific Reports

Fig. 7

From: Correlation analysis and comprehensive evaluation of dam safety monitoring at Silin hydropower station

Fig. 7

Principal component analysis of monitoring categories. PC1 & PC2: First and second principal components, with PC1 explaining 52.8% of the total variance. Green spheres: Sample scores representing individual observations in the reduced-dimensional space. Red elliptical boundary: 95% confidence ellipse for group-wise data distribution. Blue dashed arrows: Variable loadings indicating the contribution of original features to each principal component (arrow length proportional to loading magnitude).

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