Operation's control parameters

op_ctrl(
  output_mode,
  output_class = "vector",
  na_action = "exclude",
  cols = NULL,
  rows = NULL,
  factor_mode = "character",
  ...
)

Arguments

output_mode	Desired `base::storage.mode()` for the result.
output_class	One of ("vector", "list", "data.frame", "matrix"), possibly abbreviated.
na_action	One of ("exclude", "pass"), possibly abbreviated. See stats::na.pass for semantics.
cols	A vector indicating which columns to consider for the operation. If `NULL`, all columns are used. If its length is 0, no columns are considered. Negative numbers, logical values, character vectors representing column names, and tidyselect::select_helpers are supported.
rows	Like `cols` but for row indices, and without `tidyselect` support.
factor_mode	One of ("character", "integer"), possibly abbreviated. If a column is a factor, this determines whether the operation uses its internal integer values, or the character values from its levels.
...	Internal.

Details

Each function in this package supports arguments for op_ctrl through its ellipsis, but sometimes they don't pay attention to certain options; each function specifies what can be used.

Subsetting with rows or cols does not incur a deep copy of the data, only the vector with desired indices is kept in memory, and look-ups are done. Support for tidyselect only works when this function is not called directly.

When a function supports output_mode, the result is essentially cast to the desired mode, as if something like as.logical, as.integer, or similar was used; currently only supported by row_means().

Note

Abbreviations are supported in accordance to the rules from base::match.arg().