This works like [[
for local data frames, and automatically collects
before indexing for remote data tables.
pull(.data, var = -1)
.data | A table of data |
---|---|
var | A variable specified as:
The default returns the last column (on the assumption that's the column you've created most recently). This argument is taken by expression and supports quasiquotation (you can unquote column names and column positions). |
mtcars %>% pull(-1)#> [1] 4 4 1 1 2 1 4 2 2 4 4 3 3 3 4 4 4 1 2 1 1 2 2 4 2 1 2 2 4 6 8 2mtcars %>% pull(1)#> [1] 21.0 21.0 22.8 21.4 18.7 18.1 14.3 24.4 22.8 19.2 17.8 16.4 17.3 15.2 10.4 #> [16] 10.4 14.7 32.4 30.4 33.9 21.5 15.5 15.2 13.3 19.2 27.3 26.0 30.4 15.8 19.7 #> [31] 15.0 21.4mtcars %>% pull(cyl)#> [1] 6 6 4 6 8 6 8 4 4 6 6 8 8 8 8 8 8 4 4 4 4 8 8 8 8 4 4 4 8 6 8 4# Also works for remote sources if (requireNamespace("dbplyr", quietly = TRUE)) { df <- dbplyr::memdb_frame(x = 1:10, y = 10:1, .name = "pull-ex") df %>% mutate(z = x * y) %>% pull() }