Quantitative Analysis of a Weak Correlation between Complicated Data on the Basis of Principal Component Analysis

Table 1

The details of the example data of climate, altitude, and chemical compositions, respectively.

No.	Data	Name	Description
1	X1	Climate	The 14 climate factors include sunshine hours, temperature, altitude, precipitation, and so on
2	X2	Altitude	The 4 altitude factors include minimum altitude, maximum altitude, average altitude, main altitude, and so on
3	Y1	Chemicals	The 5 chemical indices include total sugar, reducing sugar, nicotine, potassium, and chlorine
4	D	Description	The 7 description information includes county, city, village committee, topography, soil type, and planting cycle year

Note: the number of objects of raw data is 171,516.