报错类型

Error: All arguments must be named

plyr中的rename和dplyr中的rename用法是不同的.

plyr::rename

rename(data, c(old=new))

dplyr::rename

rename(data, new = old)

Example

比如, 默认的是plyr的rename, 运行下面命令, 会报错:

d <- data.frame(old1=1:3, old2=4:6, old3=7:9)dlibrary(tidyverse)rename(d, c("old2"="two", "old3"="three"))rename(d, c(old2="two", old3="three"))

结果

> d <- data.frame(old1=1:3, old2=4:6, old3=7:9)
> d
old1 old2 old3
1 1 4 7
2 2 5 8
3 3 6 9
> library(tidyverse)
> rename(d, c("old2"="two", "old3"="three"))
Error: All arguments must be named
> rename(d, c(old2="two", old3="three"))
Error: All arguments must be named

正确的打开方式:

d <- data.frame(old1=1:3, old2=4:6, old3=7:9)drename(d, two=old2, three=old3)

结果:

> d <- data.frame(old1=1:3, old2=4:6, old3=7:9)
> d
old1 old2 old3
1 1 4 7
2 2 5 8
3 3 6 9
> rename(d, two=old2, three=old3)
old1 two three
1 1 4 7
2 2 5 8
3 3 6 9

或者使用plyr按第一种方式修改:

d <- data.frame(old1=1:3, old2=4:6, old3=7:9)dlibrary(tidyverse)plyr::rename(d, c("old2"="two", "old3"="three"))plyr::rename(d, c(old2="two", old3="three"))

结果:

> d <- data.frame(old1=1:3, old2=4:6, old3=7:9)
> d
old1 old2 old3
1 1 4 7
2 2 5 8
3 3 6 9
> library(tidyverse)
> plyr::rename(d, c("old2"="two", "old3"="three"))
old1 two three
1 1 4 7
2 2 5 8
3 3 6 9
> plyr::rename(d, c(old2="two", old3="three"))
old1 two three
1 1 4 7
2 2 5 8
3 3 6 9

搞定!!!

关键点, dplyr是新名称放在前面, 旧名称放在后面, 而且不用引号, 不用c(), 更方便!!!

另外, dplyr中的select还可以选择+ 该名称, 直接指定列数!!!

d <- data.frame(old1=1:3, old2=4:6, old3=7:9)dselect(d,one=1,three=3)

结果:

> d <- data.frame(old1=1:3, old2=4:6, old3=7:9)
> d
old1 old2 old3
1 1 4 7
2 2 5 8
3 3 6 9
> select(d,one=1,three=3)
one three
1 1 7
2 2 8
3 3 9

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