结果:找到“size lev”相关内容16个,排序为按回复时间降序,搜索更多相关帖子请点击“高级”
levels(size)[size]
4 个回复 - 1634 次查看
>
size size
[1] 9 12 26 22 24 13
Levels: 9 12 13 22 24 26
> as.numeric(
size)
[1] 1 2 6 4 5 3
>
levels(
size)
[1] "9" "12" "13" "22" "24" "26"
>
levels(
size)
[1] "9" "12" "26" "22" "24" "13 ...
2012-8-4 06:49 - dxystata - R语言论坛