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Journal of Analytical Science and Technology
Fig. 3 | Journal of Analytical Science and Technology

Fig. 3

From: Feasibility of UV–Vis spectroscopy combined with pattern recognition techniques to authenticate the medicinal plant material from different geographical areas

Fig. 3

Profile of loadings for the PCA-Varimax analysis: a based on data from the original spectra; b based on data from the first-order derivative spectra; c based on data from the second-order derivative spectra; d based on data from the third-order derivative spectra; e based on data from the fourth-order derivative spectra

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