logical2factor(x, ...) ## S3 method for class 'default':
logical2factor(x, ...)
## S3 method for class 'data.frame':
logical2factor(x, ...)
x is a vector either x or the result of
converting x into a factor with levels TRUE
and FALSE (in that order); if x is a data
frame, a data frame with all logicals converted to
factors in this manner.