如何对两个变量进行交叉制表以对 R 中的第三个分类变量进行分类

Question

我想将x 与y 交叉制表以在表格单元格中获得z 的值。

library(tidyverse)

df <- tibble(x = c("a", "a", "b", "b"),
             y = c("c", "d", "c", "d"),
             z = c("e", "g", "f", "h"))

# I want to obtain this result:
#   c   d
# a e   g
# b f   h
Created on 2021-07-18 by the reprex package (v2.0.0)

Answer 1

我想你想要tidyr::pivot_wider...

df %>% pivot_wider(names_from = y, values_from = z)

# A tibble: 2 x 3
  x     c     d    
  <chr> <chr> <chr>
1 a     e     g    
2 b     f     h