目前我有3列的df数据。
sizes <- factor(c("small", "large", "large", "small", "medium"))
c <- sample(1:5)
a <- c("M","M","F","M","F")
df <- data.frame(sizes,c,a)
> head(df$sizes)
[1] small large large small medium
Levels: large medium small
> head(df)
sizes c a
1 small 1 M
2 large 3 M
3 large 4 F
4 small 5 M
5 medium 2 F
我正在尝试将因子数据大小重新排序为“小”,“中”,“大”并将其应用回df。
申请后
sizes <- factor(sizes, levels = c("small", "medium", "large"))
sizes
[1] small large large small medium
Levels: small medium large
但我的原始数据集仍未重新排序
> head(df$sizes)
[1] small large large small medium
Levels: large medium small
有人帮忙吗?
答案 0 :(得分:1)
我们指定levels
中的factor
重新排序。
df$sizes <- factor(df$sizes, levels = c("small", "medium", "large"))