谢谢了,呵呵
winsor takes the non-missing values of a variable x ordered such that
x_1 <= ... <= x_n
and generates a new variable y identical to x except that the h highest
and h lowest values are replaced by the next value counting inwards from
the extremes:
y_1, ... , y_h = y_(h + 1)
y_n, ... , y_(n - h + 1) = y_(n - h)
就是对极端值的一种处理。