tests/testthat/_snaps/pivot-wide.md

In tidyverse/tidyr: Tidy Messy Data

error if input is not a data.frame

Code
  pivot_wider_spec(list(), spec)
Condition
  Error in `pivot_wider_spec()`:
  ! `data` must be a data frame, not an empty list.

error when overwriting existing column

Code
  pivot_wider(df, names_from = key, values_from = val)
Condition
  Error in `pivot_wider()`:
  ! Names must be unique.
  x These names are duplicated:
    * "a" at locations 1 and 2.
  i Use argument `names_repair` to specify repair strategy.

Code
  out <- pivot_wider(df, names_from = key, values_from = val, names_repair = "unique")
Message
  New names:
  * `a` -> `a...1`
  * `a` -> `a...2`

names_from must be supplied if name isn't in data (#1240)

Code
  pivot_wider(df, values_from = val)
Condition
  Error in `pivot_wider()`:
  ! Can't select columns that don't exist.
  x Column `name` doesn't exist.

values_from must be supplied if value isn't in data (#1240)

Code
  pivot_wider(df, names_from = key)
Condition
  Error in `pivot_wider()`:
  ! Can't select columns that don't exist.
  x Column `value` doesn't exist.

names_from must identify at least 1 column (#1240)

Code
  pivot_wider(df, names_from = starts_with("foo"), values_from = val)
Condition
  Error in `pivot_wider()`:
  ! Must select at least one item.

values_from must identify at least 1 column (#1240)

Code
  pivot_wider(df, names_from = key, values_from = starts_with("foo"))
Condition
  Error in `pivot_wider()`:
  ! Must select at least one item.

values_fn emits an informative error when it doesn't result in unique values (#1238)

Code
  pivot_wider(df, values_fn = list(value = ~.x))
Condition
  Error in `pivot_wider()`:
  ! Applying `values_fn` to `value` must result in a single summary value per key.
  i Applying `values_fn` resulted in a vector of length 2.

build_wider_spec() requires empty dots

Code
  build_wider_spec(df, 1)
Condition
  Error in `build_wider_spec()`:
  ! `...` must be empty.
  x Problematic argument:
  * ..1 = 1
  i Did you forget to name an argument?

Code
  build_wider_spec(df, name_prefix = "")
Condition
  Error in `build_wider_spec()`:
  ! `...` must be empty.
  x Problematic argument:
  * name_prefix = ""

pivot_wider_spec() requires empty dots

Code
  pivot_wider_spec(df, spec, 1)
Condition
  Error in `pivot_wider_spec()`:
  ! `...` must be empty.
  x Problematic argument:
  * ..1 = 1
  i Did you forget to name an argument?

Code
  pivot_wider_spec(df, spec, name_repair = "check_unique")
Condition
  Error in `pivot_wider_spec()`:
  ! `...` must be empty.
  x Problematic argument:
  * name_repair = "check_unique"

names_vary is validated

Code
  build_wider_spec(df, names_vary = 1)
Condition
  Error in `build_wider_spec()`:
  ! `names_vary` must be a string or character vector.

Code
  build_wider_spec(df, names_vary = "x")
Condition
  Error in `build_wider_spec()`:
  ! `names_vary` must be one of "fastest" or "slowest", not "x".

names_expand is validated

Code
  build_wider_spec(df, names_expand = 1)
Condition
  Error in `build_wider_spec()`:
  ! `names_expand` must be `TRUE` or `FALSE`, not the number 1.

Code
  build_wider_spec(df, names_expand = "x")
Condition
  Error in `build_wider_spec()`:
  ! `names_expand` must be `TRUE` or `FALSE`, not the string "x".

id_cols can't select columns from names_from or values_from (#1318)

Code
  pivot_wider(df, id_cols = name, names_from = name, values_from = value)
Condition
  Error in `pivot_wider()`:
  ! `id_cols` can't select a column already selected by `names_from`.
  i Column `name` has already been selected.

Code
  pivot_wider(df, id_cols = value, names_from = name, values_from = value)
Condition
  Error in `pivot_wider()`:
  ! `id_cols` can't select a column already selected by `values_from`.
  i Column `value` has already been selected.

id_cols returns a tidyselect error if a column selection is OOB (#1318)

Code
  pivot_wider(df, id_cols = foo)
Condition
  Error in `pivot_wider()`:
  ! Can't select columns that don't exist.
  x Column `foo` doesn't exist.

named id_cols gives clear error (#1104)

Code
  pivot_wider(df, id_cols = c(z = x))
Condition
  Error in `pivot_wider()`:
  ! Can't rename variables in this context.

id_expand is validated

Code
  pivot_wider(df, id_expand = 1)
Condition
  Error in `pivot_wider()`:
  ! `id_expand` must be `TRUE` or `FALSE`, not the number 1.

Code
  pivot_wider(df, id_expand = "x")
Condition
  Error in `pivot_wider()`:
  ! `id_expand` must be `TRUE` or `FALSE`, not the string "x".

duplicated keys produce list column with warning

Code
  pv <- pivot_wider(df, names_from = key, values_from = val)
Condition
  Warning:
  Values from `val` are not uniquely identified; output will contain list-cols.
  * Use `values_fn = list` to suppress this warning.
  * Use `values_fn = {summary_fun}` to summarise duplicates.
  * Use the following dplyr code to identify duplicates.
    {data} |>
    dplyr::summarise(n = dplyr::n(), .by = c(a, key)) |>
    dplyr::filter(n > 1L)

duplicated key warning mentions every applicable column

Code
  pivot_wider(df, names_from = key, values_from = c(a, b, c))
Condition
  Warning:
  Values from `a`, `b` and `c` are not uniquely identified; output will contain list-cols.
  * Use `values_fn = list` to suppress this warning.
  * Use `values_fn = {summary_fun}` to summarise duplicates.
  * Use the following dplyr code to identify duplicates.
    {data} |>
    dplyr::summarise(n = dplyr::n(), .by = c(key)) |>
    dplyr::filter(n > 1L)
Output
  # A tibble: 1 x 3
    a_x       b_x       c_x      
    <list>    <list>    <list>   
  1 <dbl [2]> <dbl [2]> <dbl [2]>

Code
  pivot_wider(df, names_from = key, values_from = c(a, b, c), values_fn = list(b = sum))
Condition
  Warning:
  Values from `a` and `c` are not uniquely identified; output will contain list-cols.
  * Use `values_fn = list` to suppress this warning.
  * Use `values_fn = {summary_fun}` to summarise duplicates.
  * Use the following dplyr code to identify duplicates.
    {data} |>
    dplyr::summarise(n = dplyr::n(), .by = c(key)) |>
    dplyr::filter(n > 1L)
Output
  # A tibble: 1 x 3
    a_x         b_x c_x      
    <list>    <dbl> <list>   
  1 <dbl [2]>     7 <dbl [2]>

duplicated key warning backticks non-syntactic names

Code
  pv <- pivot_wider(df, names_from = `the-key`, values_from = val)
Condition
  Warning:
  Values from `val` are not uniquely identified; output will contain list-cols.
  * Use `values_fn = list` to suppress this warning.
  * Use `values_fn = {summary_fun}` to summarise duplicates.
  * Use the following dplyr code to identify duplicates.
    {data} |>
    dplyr::summarise(n = dplyr::n(), .by = c(`a 1`, a2, `the-key`)) |>
    dplyr::filter(n > 1L)

values_fn is validated

Code
  pivot_wider(df, values_fn = 1)
Condition
  Error in `pivot_wider()`:
  ! `values_fn` must be `NULL`, a function, or a named list of functions.

unused_fn must result in single summary values

Code
  pivot_wider(df, id_cols = id, unused_fn = identity)
Condition
  Error in `pivot_wider()`:
  ! Applying `unused_fn` to `unused` must result in a single summary value per key.
  i Applying `unused_fn` resulted in a vector of length 2.

values_fill is validated

Code
  pivot_wider(df, values_fill = 1:2)
Condition
  Error in `pivot_wider()`:
  ! `values_fill` must be `NULL`, a scalar, or a named list, not an integer vector.

unused_fn is validated

Code
  pivot_wider(df, id_cols = id, unused_fn = 1)
Condition
  Error in `pivot_wider()`:
  ! `unused_fn` must be `NULL`, a function, or a named list of functions.

id_cols has noisy compat behavior (#1353)

Code
  out <- pivot_wider(df, id)
Condition
  Warning:
  Specifying the `id_cols` argument by position was deprecated in tidyr 1.3.0.
  i Please explicitly name `id_cols`, like `id_cols = id`.

Code
  expect <- pivot_wider(df, id_cols = id)

id_cols compat behavior doesn't trigger if id_cols is specified too

Code
  pivot_wider(df, id, id_cols = id2)
Condition
  Error in `pivot_wider()`:
  ! `...` must be empty.
  x Problematic argument:
  * ..1 = id
  i Did you forget to name an argument?

id_cols compat behavior doesn't trigger if multiple ... are supplied

Code
  pivot_wider(df, id, id2)
Condition
  Error in `pivot_wider()`:
  ! `...` must be empty.
  x Problematic arguments:
  * ..1 = id
  * ..2 = id2
  i Did you forget to name an argument?

id_cols compat behavior doesn't trigger if named ... are supplied

Code
  pivot_wider(df, ids = id)
Condition
  Error in `pivot_wider()`:
  ! `...` must be empty.
  x Problematic argument:
  * ids = id

tidyverse/tidyr documentation built on Oct. 30, 2024, 1:53 a.m.