Figure 5.
Correlations between eigenvector elements and spectral characteristics. (a) Elements of the first eigenvector of the covariance matrix V j1 are plotted against the peak height of the respective spectrum. The slope and intercept of the fitted straight line are 1.1 · 10−4 ± 4.5 · 10−6 and 0.012 ± 0.005. The correlation coefficient is 0.96. (b) Elements of the second eigenvector of the correlation matrix V j2 are plotted against the half-width of the respective spectrum. The slope and intercept of the fitted straight line are 0.0019 ± 0.00012 and −0.229 ± 0.017. The correlation coefficient is 0.91.