一、两维变量的综合值计算法 在制定苗木标准过程中,苗高和地径是两项重要的苗木质量指标。在多变量分析中,可以用一个指标去代表原来较多的指标。因此,我们也可以将苗高,地径两项质量指标,组成一个保留信息量最多的综合性指标,简称为综合值。计算原理如后: (一)苗高、地径数据中心化 First, the two-dimensional integrated variable value method in the development of seedling standards, seedling height and diameter are two important seedling quality indicators. In multivariate analysis, you can use an indicator to represent more of the original indicator. Therefore, we can also seedling height and diameter of two quality indicators to form a comprehensive information retained the most comprehensive index, referred to as the integrated value. Calculate the principle as follows: (A) seedling height, ground diameter data center