相关疑难解决方法(0)

pivot_wider()在开发版本中使用“传播”多个变量的最佳方法是什么tidyr？

# https://tidyr.tidyverse.org/dev/reference/pivot_wider.html
# devtools::install_github("tidyverse/tidyr")
library(tidyr)
library(tidyverse)
have <- tibble::tribble(
  ~user_id, ~question, ~answer, ~timestamp,
  1, "q1", "a1", "2019-07-22 16:54:43",
  1, "q2", "a2", "2019-07-22 16:55:43",
  2, "q1", "a1", "2019-07-22 16:56:43",
  2, "q2", "a2", "2019-07-22 16:57:43",
  3, "q1", "a1", "2019-07-22 16:58:43",
  3, "q2", "a2", "2019-07-22 16:59:43"
) %>%
  mutate(timestamp = as_datetime(timestamp))

have
# # A tibble: 6 x 4
# user_id question answer timestamp          
# <dbl> <chr>    <chr>  <dttm>             
#   1       1 q1       a1     2019-07-22 16:54:43
#   2       1 …