remove_group_subsets: Remove groups of rows within a data.frame that are proper...

In epicentre-msf/llutils: Linelist Utilities

Description

Remove groups of rows within a data.frame that are proper subsets of other defined groups, to limit group duplication

Usage

remove_group_subsets(x, target = NULL, group, by, invert = FALSE)

Arguments

x	Focal data.frame containing one or more defined groups
target	Optional target data.frame containing one or more defined groups. Defaults to NULL, in which case the target is x itself.
group	Name of the column within x (and target, if applicable) defining groups
by	Character vector giving the column(s) by which x and target should be matched and compared.
invert	Logical indicating whether to invert the results, and thus retain groups that are subsets rather than removing them.

Value

The focal data.frame x, excluding groups representing subsets of other groups.

Examples

x <- data.frame(
  x1 = c("a", "a", "a",  "b", "b",  "a", "a",  "b", "c",  "c", "b"),
  x2 = c("a", "a", "a",  "b", "b",  "a", "a",  "b", "c",  "c", "b"),
  g =  c("1", "1", "1",  "2", "2",  "3", "3",  "4", "4",  "5", "5"),
  stringsAsFactors = FALSE
)

remove_group_subsets(x, group = "g", by = c("x1", "x2"))

epicentre-msf/llutils documentation built on Nov. 9, 2020, 8:24 p.m.