R haven：从导入的 SPSS 文件访问列标签

Question

我在 SPSS 中有一个数据集，我正在使用 'haven' 库

读入 R

df <- structure(list(SC155Q09HA = structure(c(2, 1, 1, 2, 1, 2, 3, 
      4, 3, 1), label = "School's capacity using digital devices: An effective online learning support platform is available", labels = c(`Strongly disagree` = 1, 
      Disagree = 2, Agree = 3, `Strongly agree` = 4, `Valid Skip` = 5, 
      `Not Applicable` = 7, Invalid = 8, `No Response` = 9), class = "haven_labelled")), row.names = c(NA, 
      -10L), class = c("tbl_df", "tbl", "data.frame"))

我正在尝试从数据框中提取标签，并且可以在 base R 中执行此操作：

library(tidyverse)
library(magrittr)
library(haven)

focus <- quo(SC156Q05HA)

 attr(df$SC155Q09HA,"label")

>[1] "School's capacity using digital devices: An effective online learning support platform is available"

但不是以 dplyr 风格的方式使用变量进行选择：

df[quo_name(focus)] %>% attr("label")

>NULL

df %>% select(!!focus) %>% attr("label")

>NULL

我知道两个 none 工作示例 return tibbles，而第一个 return 是一个带标签的双打。我如何使它们相等？

Answer 1

你可以这样做：

focus <- quo(SC155Q09HA) # Changed to match the data provided

df %>% pull(!!focus) %>% attr("label")

[1] "School's capacity using digital devices: An effective online learning support platform is available"

您尝试使用 select() 将标题传递给 attr()，它没有标签属性，因此它 returns NULL.

如果您有多个标签要提取，请使用 purrr::map_chr()

df %>% purrr::map_chr(attr, "label")

R haven：从导入的 SPSS 文件访问列标签

R haven: accessing column label from imported SPSS file

r

dplyr

r-haven

tidyverse