[英]how to add a column to a netsed tibble in R
tbl_a <- tibble( a = letters[1:3], b = 1:3 ) tbl_b <- tibble( c = letters[1:3], d = 1:3 ) tbl_nested <- tibble( name = c("Test", "Sand"), nest_tbl = list(tbl_a,tbl_b) )
and the final nested tibble should be:最终嵌套的小标题应该是:
tbl_a_new <- tibble( name = "Test", a = letters[1:3], b = 1:3 ) tbl_b_new <- tibble( name = "San", a = letters[1:3], b = 1:3 ) tibble( name = c("Test", "Sand"), nest_tbl = list(tbl_a,tbl_b), nest_tbl_new = list(tbl_a_new,tbl_b_new) ) name nest_tbl nest_tbl_new <chr> <list> <list> 1 Test <tibble [3 x 2]> <tibble [3 x 3]> 2 Sand <tibble [3 x 2]> <tibble [3 x 3]>
thank you very much for your help非常感谢您的帮助
We can use map2
我们可以使用
map2
library(dplyr)
library(purrr)
tbl_nested %>%
mutate(nest_tbl_new = map2(nest_tbl, name, ~
.x %>%
mutate(name = .y)))
-output -输出
# A tibble: 2 x 3
# name nest_tbl nest_tbl_new
# <chr> <list> <list>
#1 Test <tibble [3 × 2]> <tibble [3 × 3]>
#2 Sand <tibble [3 × 2]> <tibble [3 × 3]>
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