用空格替换要素名称中的所有下划线 [英] Replace all underscores in feature names with a space

问题描述

我想用空格替换数据框特征名称中的所有下划线:

I'd like to replace all underscores in a dataframes feature names with a space:

library(tidyverse)
names <- c("a_nice_day", "quick_brown_fox", "blah_ha_ha")
example_df <- data.frame(
  x = 1:3,
  y = LETTERS[1:3],
  z = 4:6
)
names(example_df) <- names

尝试:

example_df %>% rename_all(replace = c("_" = " "))
Error: `.funs` must specify a renaming function

也尝试过:

example_df %>% rename_all(funs(replace = c("_" = " ")))
Error: `nm` must be `NULL` or a character vector the same length as `x`

如何用空格替换要素名称中的所有下划线?

How can I replace all the underscores in the feature names with a space?

推荐答案

有关:

example_df %>% select_all(funs(gsub("_", " ", .)))

输出:

  a nice day quick brown fox blah ha ha
1          1               A          4
2          2               B          5
3          3               C          6

您也可以使用 rename ，但是在这种情况下，您需要以其他方式调用它:

You could also use rename, however in this case you'd need to call it in a different way:

example_df %>% rename_all(function(x) gsub("_", " ", x))

或者简单地:

example_df %>% rename_all(~ gsub("_", " ", .))

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