我正在尝试更新 tibble 中反向编码项目的代码,以使用across()dplyr 中的函数而不是mutate_at(). 我现在的代码如下所示:
reversed_items <- c("x1","x4","x12") \n\ndata <- data %>% \n mutate_at(vars(reversed_items), function(x)6-x )\nRun Code Online (Sandbox Code Playgroud)\n这有效。但是,每当我尝试更新代码以包含该across()函数时,我都会收到此错误:
Error: Problem with `mutate()` input `..2`.\nx Input `..2` must be a vector, not a `formula` object.\n\xe2\x84\xb9 Input `..2` is `~recode(6 - .x)`.\nRun Code Online (Sandbox Code Playgroud)\n我读过: https: //www.tidyverse.org/blog/2020/04/dplyr-1-0-0-colwise/但无法让它工作。
\n工作正常,您是否将右括号放在了正确的位置:
data <- data.frame(c1 = round(rnorm(5)),
c2 = round(rnorm(5)),
c3 = round(rnorm(5)))
data
c1 c2 c3
1 -1 -2 0
2 1 -1 1
3 2 1 1
4 0 0 0
5 1 0 2
reversed_items <- c("c1","c2","c3")
data %>% mutate_at(vars(reversed_items), function(x)6-x )
c1 c2 c3
1 7 8 6
2 5 7 5
3 4 5 5
4 6 6 6
5 5 6 4
data %>% mutate(across(reversed_items, function(x)6-x ))
c1 c2 c3
1 7 8 6
2 5 7 5
3 4 5 5
4 6 6 6
5 5 6 4
Run Code Online (Sandbox Code Playgroud)
使用的数据:
structure(list(c1 = c(-1, 1, 2, 0, 1), c2 = c(-2, -1, 1, 0, 0
), c3 = c(0, 1, 1, 0, 2)), class = "data.frame", row.names = c(NA,
-5L))
Run Code Online (Sandbox Code Playgroud)