Table 4.

Final clustering center values of Panax notoginseng seedlings by K-means clustering analysis

Index	Final cluster center
	First	Second	Third	Fourth
Fresh weight of per plant (g)	1.59	2.68	0.95	0.62
Root length (cm)	2.6	4.3	1.9	2.2
Root diameter (cm)	1.37	1.08	0.858	0.654
Bud diameter (cm)	0.504	0.629	0.332	0.236
Rootlet number	15	25	8	4
No. of clusters (N)	18,107	3,889	11,665	2,339
Percentage (%)	50.3	10.8	32.4	6.5