Multivariate Statistical Analysis on a SEM/EDS Phase Map of Rare Earth Minerals

Figure 4

Denoising analyses with PCA on the 5-minute map. (a) Original La-Lα -ratio map; (b) denoised La-Lα -ratio map with the first 9 weighted PCA components; (c) denoised La-Lα -ratio map with the first 22 routine PCA components; (d) REM-phase map with the first 9 weighted PCA components; (e) REM-phase map with the first 22 routine PCA components; (f) noise map of the 22-component denoised 5-minute map; (g) bar chart of the phase identification.

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