在factoextra包中对贡献率有一个绘图。图中有参考线,高于此线的认为变量是显著的,有没有哪位知道这个线的值是多少,随着变量的多少这个值是不同的。
包的帮助中说了这个参考线,但没说这个线对应的值是多少:
A reference dashed line is also shown on the barplot. This reference line corresponds to the expected value if the contribution where uniform. For a given dimension, any row/column with a contribution above the reference line could be considered as important in contributing to the dimension.