Rapid Recognition of Geoherbalism and Authenticity of a Chinese Herb by Data Fusion of Near-Infrared Spectroscopy (NIR) and Mid-Infrared (MIR) Spectroscopy Combined with Chemometrics

Figure 1

The raw NIR spectra of five different origins of Angelica dahurica (a) and the results by PCA (b), LDA (c), and PLSDA (d).