如何使用Character对象使用dplyr重命名列 [英] How do you rename a column with dplyr using a character object

问题描述

我想通过使用变量，以动态的方式使用dplyr重命名列。但是，它只是将变量命名为列，而不是其内容。有什么想法吗？

colnames(y)
[1] "time"         "channel_1"    "channel_2"    "channel_3"    "channel_4"    "channel_5"    "correction"   "channel.corr"

ladder.channel <- "channel_4"
fsa.bc <- y %>%
    select(-c(all_of(ladder.channel), "correction")) %>%
    rename(ladder.channel = channel.corr)

colnames(fsa.bc)
"time"           "channel_1"      "channel_2"      "channel_3"      "channel_5"      "ladder.channel"

推荐答案

使问题可重现：

library(dplyr)

y <- mtcars[, 1:8]

names(y) <- c("time", "channel_1",  "channel_2", "channel_3", "channel_4", "channel_5", "correction",  "channel.corr")

ladder.channel <-  "channel_4"

fsa.bc <- 
  y %>%
  select(-c(all_of(ladder.channel), "correction"))%>% 
  rename({{ladder.channel}} := channel.corr)

names(fsa.bc)
#> [1] "time"      "channel_1" "channel_2" "channel_3" "channel_5" "channel_4"

^{由reprex package(v2.0.0)}创建于2021-09-01

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