在R语言实战中跟着操作进行实践中遇到问题
library(mice)
data(sleep,package="VIM")
imp <-mice(sleep,seed=1234)
运行iter imp variable
1 1 NonD Dream Sleep Span Gest
1 2 NonD Dream Sleep Span Gest
1 3 NonD Dream Sleep Span Gest
1 4 NonD Dream Sleep Span Gest
1 5 NonD Dream Sleep Span Gest
2 1 NonD Dream Sleep Span Gest
2 2 NonD Dream Sleep Span Gest
2 3 NonD Dream Sleep Span Gest
2 4 NonD Dream Sleep Span Gest
2 5 NonD Dream Sleep SpanError in data.frame(it = s$it, im = s$im, dep = s$dep, meth = if (is.null(meth)) s$meth else meth, :
参数值意味着不同的行数: 0, 1
输入imp，显示无object
操作和书上完全一样，为何会这样，请大家解惑