Rapid Determination of Pachymic Acid Content by Near-Infrared Spectroscopy

Table 5

The test results for the number of principal components.

No.	Method, principal factor number		RMSEC (mg/g)	RMSEP (mg/g)
1	SNV + SD, 10	0.949	0.040	0.042
2	SNV + SD, 9	0.915	0.051	0.054
3	SNV + SD, 8	0.873	0.062	0.065
4	MSC + SD, 10	0.949	0.040	0.042
5	MSC + SD, 9	0.915	0.051	0.054
6	MSC + SD, 8	0.873	0.062	0.065
7	SD, 10	0.941	0.043	0.046
8	SD, 9	0.922	0.049	0.052
9	SD, 8	0.853	0.067	0.069