relocate: Change column order

In poorman: A Poor Man's Dependency Free Recreation of 'dplyr'

Change column order

Description

Use relocate() to change column positions, using the same syntax as select() to make it easy to move blocks of columns at once.

Usage

relocate(.data, ..., .before = NULL, .after = NULL)

Arguments

.data	A data.frame.
...	<poor-select> Columns to move.
.before, .after	<poor-select> Destination of columns selected by .... Supplying neither will move columns to the left-hand side; specifying both will result in an error.

Value

An object of the same type as .data. The output has the following properties:

• Rows are not affected.

• The same columns appear in the output, but (usually) in a different place.

• Data frame attributes are preserved.

• Groups are not affected.

Examples

df <- data.frame(
  a = 1, b = 1, c = 1, d = "a", e = "a", f = "a",
  stringsAsFactors = FALSE
)
df %>% relocate(f)
df %>% relocate(a, .after = c)
df %>% relocate(f, .before = b)
df %>% relocate(a, .after = last_col())

# Can also select variables based on their type
df %>% relocate(where(is.character))
df %>% relocate(where(is.numeric), .after = last_col())
# Or with any other select helper
df %>% relocate(any_of(c("a", "e", "i", "o", "u")))

# When .before or .after refers to multiple variables they will be
# moved to be immediately before/after the selected variables.
df2 <- data.frame(
  a = 1, b = "a", c = 1, d = "a",
  stringsAsFactors = FALSE
)
df2 %>% relocate(where(is.numeric), .after = where(is.character))
df2 %>% relocate(where(is.numeric), .before = where(is.character))

poorman documentation built on Nov. 2, 2023, 5:27 p.m.