gather_by: Gather multiple groupings of targets *[Deprecated]*

In wlandau-lilly/drake: A Pipeline Toolkit for Reproducible Computation at Scale

Gather multiple groupings of targets

Description

Deprecated on 2019-05-16. Use drake_plan() transformations instead. See ⁠https://books.ropensci.org/drake/plans.html#large-plans⁠ for the details.

Usage

gather_by(
  plan,
  ...,
  prefix = "target",
  gather = "list",
  append = TRUE,
  filter = NULL,
  sep = "_"
)

Arguments

plan	Workflow plan data frame of prespecified targets.
...	Symbols, columns of plan to define target groupings. A gather_plan() call is applied for each grouping. Groupings with all NAs in the selector variables are ignored.
prefix	Character, prefix for naming the new targets. Suffixes are generated from the values of the columns specified in ....
gather	Function used to gather the targets. Should be one of list(...), c(...), rbind(...), or similar.
append	Logical. If TRUE, the output will include the original rows in the plan argument. If FALSE, the output will only include the new targets and commands.
filter	An expression like you would pass to dplyr::filter(). The rows for which filter evaluates to TRUE will be gathered, and the rest will be excluded from gathering. Why not just call dplyr::filter() before gather_by()? Because gather_by(append = TRUE, filter = my_column == "my_value") gathers on some targets while including all the original targets in the output. See the examples for a demonstration.
sep	Character scalar, delimiter for creating the names of new targets.

Details

Perform several calls to gather_plan() based on groupings from columns in the plan, and then row-bind the new targets to the plan.

Value

A workflow plan data frame.

See Also

drake_plan()

wlandau-lilly/drake documentation built on Dec. 3, 2024, 11:09 p.m.