我在我的数据集中将因子转换为数字,如下所示
library(dplyr)
df = data.frame(level= c( 'low', 'medium', 'high', 'very high'))
df$level = as.numeric(revalue(df$level, c('low' = 1, 'medium' =2, 'high'= 3, 'very high'=4)))
df
没关系 . 当我尝试将此规则应用于新数据集时出现问题(我对模型进行了跟踪并希望预测新数据)
newdude = data.frame(level = c( 'high'))
newdude$level = as.numeric(revalue(newdude$level, c('low' = 1, 'medium' =2, 'high'= 3, 'very high'=4)))
Error
The following `from` values were not present in `x`: low, medium, very high
> newdude
level
1 1
我得到'1'而不是'3'我无法做到充足
newdude$level = as.numeric(revalue(newdude$level, c( 'high'= 3)))
因为我事先无法知道它将采取什么 Value
怎么解决?
1 回答
试试吧