Measure color according to the numeric area of the normalizing parameter from three eigenvectors in HSV color space for the difference correlation among three eigenvectors.
利用HSV颜色空间各特征分量之间相关性小的特点，根据其三个特征分量的归一化参数的取值范围进行颜色识别。
If the data type of the field is numeric, the field is added to the Values area, with a default aggregation of sum.
如果这个字段的数据类型为数值，那么这个字段就会增加到值区域，形成一个求和的默认集合。
If the data type is non-numeric, the field is added to the Row Labels area.
如果该数据类型不是数值型，那么这个字段就会增加到行标签区域。
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