Log message:
(math/R-tidyr) Updated 1.2.1 to 1.3.0
# tidyr 1.3.0
## New features
* New family of consistent string separating functions:
`separate_wider_delim()`, `separate_wider_position()`,
`separate_wider_regex()`, `separate_longer_delim()`, and
`separate_longer_position()`. These functions are thorough refreshes of
`separate()` and `extract()`, featuring improved performance, greater
consistency, a polished API, and a new approach for handling problems. They
use stringr and supersede `extract()`, `separate()`, and `separate_rows()`
(#1304).
* `nest()` gains a `.by` argument which allows you to specify the columns to
nest by (rather than the columns to nest, i.e. through `...`). Additionally,
the `.key` argument is no longer deprecated, and is used whenever `...` isn't
specified (#1458).
* `unnest_longer()` gains a `keep_empty` argument like `unnest()` (#1339).
* `pivot_longer()` gains a `cols_vary` argument for controlling the ordering of
the output rows relative to their original row number (#1312).
* New datasets `who2`, `household`, `cms_patient_experience`, and
`cms_patient_care` to demonstrate various tidying challenges (#1333).
## Breaking changes
* The `...` argument of both `pivot_longer()` and `pivot_wider()` has been
moved to the front of the function signature, after the required arguments
but before the optional ones. Additionally, `pivot_longer_spec()`,
`pivot_wider_spec()`, `build_longer_spec()`, and `build_wider_spec()` have
all gained `...` arguments in a similar location. This change allows us to
more easily add new features to the pivoting functions without breaking
existing CRAN packages and user scripts.
`pivot_wider()` provides temporary backwards compatible support for the case
of a single unnamed argument that previously was being positionally matched to
`id_cols`. This one special case still works, but will throw a warning
encouraging you to explicitly name the `id_cols` argument.
To read more about this pattern, see
[Data, dots, details](https://design.tidyverse.org/dots-position.html) in the
tidyverse design guide (#1350).
## Lifecycle changes
* All functions deprecated in tidyr 1.0 and 1.2 (the old lazyeval functions
ending in `_` and various arguments to `unnest()`) now warn on every use.
They will be made defunct in 2024 (#1406).
## Rectangling
* `unnest_longer()` now consistently drops rows with either `NULL` or empty
vectors (like `integer()`) by default. Set the new `keep_empty` argument to
`TRUE` to retain them. Previously, `keep_empty = TRUE` was implicitly being
used for `NULL`, while `keep_empty = FALSE` was being used for empty vectors,
which was inconsistent with all other tidyr verbs with this argument (#1363).
* `unnest_longer()` now uses `""` in the index column for fully unnamed
vectors. It also now consistently uses `NA` in the index column for empty
vectors that are "kept" by `keep_empty = TRUE` (#1442).
* `unnest_wider()` now errors if any values being unnested are unnamed and
`names_sep` is not provided (#1367).
* `unnest_wider()` now generates automatic names for _partially_ unnamed
vectors. Previously it only generated them for fully unnamed vectors,
resulting in a strange mix of automatic names and name-repaired names (#1367).
## Bug fixes and minor improvements
### General
* Most tidyr functions now consistently disallow renaming during tidy-selection.
Renaming was never meaningful in these functions, and previously either had no
effect or caused problems (#1449, #1104).
* tidyr errors (including input validation) have been thoroughly reviewed
and should generally be more likely to point you in the right direction
(#1313, #1400).
* `uncount()` is now generic so implementations can be provided for objects
other than data frames (@mgirlich, #1358).
* `uncount()` gains a `...` argument. It comes between the required and the
optional arguments (@mgirlich, #1358).
* `nest()`, `complete()`, `expand()`, and `fill()` now document their support
for grouped data frames created by `dplyr::group_by()` (#952).
* All built in datasets are now standard tibbles (#1459).
* R >=3.4.0 is now required, in line with the tidyverse standard of supporting
the previous 5 minor releases of R.
* rlang >=1.0.4 and vctrs >=0.5.2 are now required (#1344, #1470).
* Removed dependency on ellipsis in favor of equivalent functions in rlang
(#1314).
### Nesting, packing, and chopping
* `unnest()`, `unchop()`, `unnest_longer()`, and `unnest_wider()` better handle
lists with additional classes (#1327).
* `pack()`, `unpack()`, `chop()`, and `unchop()` all gain an `error_call`
argument, which in turn improves some of the error calls shown in `nest()`
and various `unnest()` adjacent functions (#1446).
* `chop()`, `unpack()`, and `unchop()` all gain `...`, which must be empty
(#1447).
* `unpack()` does a better job of reporting column name duplication issues and
gives better advice about how to resolve them using `names_sep`. This also
improves errors from functions that use `unpack()`, like `unnest()` and
`unnest_wider()` (#1425, #1367).
### Pivoting
* `pivot_longer()` no longer supports interpreting `values_ptypes = list()`
and `names_ptypes = list()` as `NULL`. An empty `list()` is now interpreted as
a `<list>` prototype to apply to all columns, which is consistent with \
how any
other 0-length value is interpreted (#1296).
* `pivot_longer(values_drop_na = TRUE)` is faster when there aren't any missing
values to drop (#1392, @mgirlich).
* `pivot_longer()` is now more memory efficient due to the usage of
`vctrs::vec_interleave()` (#1310, @mgirlich).
* `pivot_longer()` now throws a slightly better error message when
`values_ptypes` or `names_ptypes` is provided and the coercion can't be made
(#1364).
* `pivot_wider()` now throws a better error message when a column selected by
`names_from` or `values_from` is also selected by `id_cols` (#1318).
* `pivot_wider()` is now faster when `names_sep` is provided (@mgirlich, #1426).
* `pivot_longer_spec()`, `pivot_wider_spec()`, `build_longer_spec()`, and
`build_wider_spec()` all gain an `error_call` argument, resulting in better
error reporting in `pivot_longer()` and `pivot_wider()` (#1408).
### Missing values
* `fill()` now works correctly when there is a column named `.direction` in
`data` (#1319, @tjmahr).
* `replace_na()` is faster when there aren't any missing values to replace
(#1392, @mgirlich).
* The documentation of the `replace` argument of `replace_na()` now mentions
that `replace` is always cast to the type of `data` (#1317).
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Log message:
(math/R-tidyr) Updated 1.1.3 to 1.2.0
# tidyr 1.2.0
## Pivoting
* `pivot_wider()` gains new `names_expand` and `id_expand` arguments for turning
implicit missing factor levels and variable combinations into explicit ones.
This is similar to the `drop` argument from `spread()` (#770).
* `pivot_wider()` gains a new `names_vary` argument for controlling the
ordering when combining `names_from` values with `values_from` column names
(#839).
* `pivot_wider()` gains a new `unused_fn` argument for controlling how to
summarize unused columns that aren't involved in the pivoting process (#990,
thanks to @mgirlich for an initial implementation).
* `pivot_longer()`'s `names_transform` and `values_transform` arguments now
accept a single function which will be applied to all of the columns
(#1284, thanks to @smingerson for an initial implementation).
* `pivot_longer()`'s `names_ptypes` and `values_ptypes` arguments now
accept a single empty ptype which will be applied to all of the columns
(#1284).
## Nesting
* `unnest()` and `unchop()`'s `ptype` argument now accepts a single empty
ptype which will be applied to all `cols` (#1284).
* `unpack()` now silently skips over any non-data frame columns specified by
`cols`. This matches the existing behavior of `unchop()` and `unnest()`
(#1153).
## Rectangling
* `unnest_wider()` and `unnest_longer()` can now unnest multiple columns at
once (#740).
* `unnest_longer()`'s `indices_to` and `values_to` arguments now accept
a glue specification, which is useful when unnesting multiple columns.
* For `hoist()`, `unnest_longer()`, and `unnest_wider()`, if a `ptype` is
supplied, but that column can't be simplified, the result will be a list-of
column where each element has type `ptype` (#998).
* `unnest_wider()` gains a new `strict` argument which controls whether or not
strict vctrs typing rules should be applied. It defaults to `FALSE` for
backwards compatibility, and because it is often more useful to be lax
when unnesting JSON, which doesn't always map one-to-one with R's types
(#1125).
* `hoist()`, `unnest_longer()`, and `unnest_wider()`'s `simplify` argument now
accepts a named list of `TRUE` or `FALSE` to control simplification on a per
column basis (#995).
* `hoist()`, `unnest_longer()`, and `unnest_wider()`'s `transform` argument now
accepts a single function which will be applied to all components (#1284).
* `hoist()`, `unnest_longer()`, and `unnest_wider()`'s `ptype` argument now
accepts a single empty ptype which will be applied to all components (#1284).
## Grids
* `complete()` gains a new `explicit` argument for limiting `fill` to only
implicit missing values. This is useful if you don't want to fill in
pre-existing missing values (#1270).
* `complete()` gains a grouped data frame method. This generates a more correct
completed data frame when groups are involved (#396, #966).
* `complete()` and `expand()` no longer allow you to complete or expand on a
grouping column. This was never well-defined since completion/expansion on a
grouped data frame happens "within" each group and otherwise has the
potential to produce erroneous results (#1299).
## Missing values
* `drop_na()`, `replace_na()`, and `fill()` have been updated to utilize vctrs.
This means that you can use these functions on a wider variety of column
types, including lubridate's Period types (#1094), data frame columns, and
the [rcrd](https://vctrs.r-lib.org/reference/new_rcrd.html) type from vctrs.
* `replace_na()` no longer allows the type of `data` to change when the
replacement is applied. `replace` will now always be cast to the type of
`data` before the replacement is made. For example, this means that using a
replacement value of `1.5` on an integer column is no longer allowed.
Similarly, replacing missing values in a list-column must now be done with
`list("foo")` rather than just `"foo"`.
* `replace_na()` no longer replaces empty atomic elements in list-columns
(like `integer(0)`). The only value that is replaced in a list-column is
`NULL` (#1168).
* `drop_na()` no longer drops empty atomic elements from list-columns
(like `integer(0)`). The only value that is dropped in a list-column is
`NULL` (#1228).
## Bug fixes and minor improvements
### General
* @mgirlich is now a tidyr author in recognition of his significant and
sustained contributions.
* All lazyeval variants of tidyr verbs have been soft-deprecated. Expect them
to move to the defunct stage in the next minor release of tidyr (#1294).
* `any_of()` and `all_of()` from tidyselect are now re-exported (#1217).
* dplyr >= 1.0.0 is now required.
### Pivoting
* `pivot_wider()` now gives better advice about how to identify duplicates when
values are not uniquely identified (#1113).
* `pivot_wider()` now throws a more informative error when `values_fn` doesn't
result in a single summary value (#1238).
* `pivot_wider()` and `pivot_longer()` now generate more informative
errors related to name repair (#987).
* `pivot_wider()` now works correctly when `values_fill` is a data frame.
* `pivot_wider()` no longer accidentally retains `values_from` when pivoting
a zero row data frame (#1249).
* `pivot_wider()` now correctly handles the case where an id column name
collides with a value from `names_from` (#1107).
* `pivot_wider()` and `pivot_longer()` now both check that the spec columns
`.name` and `.value` are character vectors. Additionally, the `.name`
column must be unique (#1107).
* `pivot_wider()`'s `names_from` and `values_from` arguments are now
required if their default values of `name` and `value` don't correspond to
columns in `data`. Additionally, they must identify at least 1 column
in `data` (#1240).
* `pivot_wider()`'s `values_fn` argument now correctly allows anonymous
functions (#1114).
* `pivot_wider_spec()` now works correctly with a 0-row data frame and a `spec`
that doesn't identify any rows (#1250, #1252).
* `pivot_longer()`'s `names_ptypes` argument is now applied after
`names_transform` for consistency with the rectangling functions
(i.e. `hoist()`) (#1233).
* `check_pivot_spec()` is a new developer facing function for validating a pivot
`spec` argument. This is only useful if you are extending `pivot_longer()` or
`pivot_wider()` with new S3 methods (#1087).
### Nesting
* The `nest()` generic now avoids computing on `.data`, making it more
compatible with lazy tibbles (#1134).
* The `.names_sep` argument of the data.frame method for `nest()` is now
actually used (#1174).
* `unnest()`'s `ptype` argument now works as expected (#1158).
* `unpack()` no longer drops empty columns specified through `cols` (#1191).
* `unpack()` now works correctly with data frame columns containing 1 row but
0 columns (#1189).
* `chop()` now works correctly with data frames with 0 rows (#1206).
* `chop()`'s `cols` argument is no longer optional. This matches the
behavior of `cols` seen elsewhere in tidyr (#1205).
* `unchop()` now respects `ptype` when unnesting a non-list column (#1211).
### Rectangling
* `hoist()` no longer accidentally removes elements that have duplicated names
(#1259).
### Grids
* The grouped data frame methods for `complete()` and `expand()` now move the
group columns to the front of the result (in addition to the columns you
completed on or expanded, which were already moved to the front). This should
make more intuitive sense, as you are completing or expanding \
"within" each
group, so the group columns should be the first thing you see (#1289).
* `complete()` now applies `fill` even when no columns to complete are
specified (#1272).
* `expand()`, `crossing()`, and `nesting()` now correctly retain `NA` values of
factors (#1275).
* `expand_grid()`, `expand()`, `nesting()`, and `crossing()` now silently
apply name repair to automatically named inputs. This avoids a number of
issues resulting from duplicate truncated names
(#1116, #1221, #1092, #1037, #992).
* `expand_grid()`, `expand()`, `nesting()`, and `crossing()` now allow
columns from unnamed data frames to be used in expressions after that
data frame was specified, like `expand_grid(tibble(x = 1), y = x)`. This
is more consistent with how `tibble()` behaves.
* `expand_grid()`, `expand()`, `nesting()`, and `crossing()` now work
correctly with data frames containing 0 columns but >0 rows (#1189).
* `expand_grid()`, `expand()`, `nesting()`, and `crossing()` now return a 1
row data frame when no inputs are supplied, which is more consistent with
`prod() == 1L` and the idea that computations involving the number of
combinations computed from an empty set should return 1 (#1258).
### Missing values
* `drop_na()` no longer drops missing values from all columns when a tidyselect
expression that results in 0 columns being selected is used (#1227).
* `fill()` now treats `NaN` like any other missing value (#982).
# tidyr 1.1.4
* `expand_grid()` is now about twice as fast and `pivot_wider()` is a bit faster
(@mgirlich, #1130).
* `unchop()` is now much faster, which propagates through to various functions,
such as `unnest()`, `unnest_longer()`, `unnest_wider()`, and
`separate_rows()` (@mgirlich, @DavisVaughan, #1127).
* `unnest()` is now much faster (@mgirlich, @DavisVaughan, #1127).
* `unnest()` no longer allows unnesting a list-col containing a mix of vector
and data frame elements. Previously, this only worked by accident, and is
considered an off-label usage of `unnest()` that has now become an error.
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