Tracing the Geographical Origins of Dendrobe (Dendrobium spp.) by Near-Infrared Spectroscopy Sensor Combined with Porphyrin and Chemometrics

Table 1

Random division of training and prediction set for PLSDA analysis.

Group code	Training set		Prediction set
	No.	Samples	No.	Samples
f01	20	1^st-20^th	10	1^st-10^th
f02	20	21^st-40^th	10	11^th-20^th
f03	23	41^st-63^rd	7	21^st-27^th
f04	19	64^th-82^nd	11	28^th-38^th
f05	16	65^th-98^th	14	39^th-52^nd
f06	17	99^th-115^th	13	53^rd-65^th
f07	23	116^th-138^th	7	66^th-72^nd
f08	19	139^th-157^th	11	73^rd-83^rd
f09	18	158^th-175^th	12	84^th-95^th
f10	18	176^th-193^rd	12	96^th-107^th
f11	21	194^th-214^th	9	108^th-116^th
f12	19	215^th-233^rd	11	117^th-127^th