CODEWITHSUNDEEP
rtidyr
Monduiz
Monduiz

Reputation: 721

tidy nest() unexpected output

In collapsing rows into a list with nest(), the output is not what I would expect. The result is a list like this:

list(X1 = c("..."))

I would have expected:

c("...")

An example using the CNN dataset

library(tidyverse)
library(readr)

test <-    read_tsv("cnn/stories/0a0a4c90d59df9e36ffec4ba306b4f20f3ba4acb.story", 
             col_names = FALSE)

test2 <- test %>%
  nest(X1, .key = articles)

EDIT: So, if I wanted a solution that gives me the output of

c("...")

I would have to do : 

test3 <- test %>% 
  do(X1 = unique(unlist(.$X1)))

Upvotes: 0

Views: 51

Answers (1)

Nathan Werth
Nathan Werth

Reputation: 5263

From the documentation page for tidyr::nest (emphasis mine):

nest() creates a list of data frames containing all the nested variables: this seems to be the most useful form in practice.

Upvotes: 1

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